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R&S FSW-K10x (LTE Downlink) LTE Downlink

1. 109 109 lt gt 109 FORMat DATA i INI Tiate CONTINUOUS 90 INITiate SEQuencer ABORL ccccceceeceeceeeeeeeseeeeeeaeeeeeeaeeeeeeaeeeseaaeeeseaaeeeecaeeesecaeeeseaeeeseaeeeseeeesecaeeeeeseeeseaaees 91 INITiate SEQuencer IMMediatoe retineret 91 INITiate SEQuencer 92 INITiate IMMediate tertie node ladies nee Avie tae a b na apis 90 INPUut ATT nuattion cccccceceeeeeeeeceseeeeeeeaeeeeteaaeeeeaaaeeeeaaaeeeseeaaeeseaaeesseaaaeeeesaeeeessaaeeessaeeeesecaeeseeeeeeeeseaee 143 144 INPut DIQ CDEVice 114 01 1 00 nennen nennen nenne nne nnnennne nnne nein nitent enne sene nnns 137 INPut DIQ RANGe UPPST i erret eb eee n tene et E eec ue cocer d Ye E 138 INPut DIQG RANGe UPPer F AUTO cniin aa E E ere Rb ie day 137
2. 121 CONFigure LTE DUPLexing lt Duplexing gt This command selects the duplexing mode Parameters lt Duplexing gt TDD Time division duplex FDD Frequency division duplex RST FDD Example CONF DUPL TDD Activates time division duplex Manual operation See Selecting the LTE Mode on page 41 CONFigure LTE DL BW lt Bandwidth gt This command selects the downlink bandwidth Parameters lt Bandwidth gt BW1 40 BW3_00 BW5_00 BW10_00 BW15_00 BW20_00 RST BW10 00 Example CONF DL BW BW1 40 Sets a signal bandwidth of 1 4 MHz in downlink Manual operation See Channel Bandwidth Number of Resource Blocks on page 42 CONFigure L TE DL CYCPrefix lt PrefixLength gt This command selects the cyclic prefix for downlink signals User Manual 1173 9370 02 05 118 R amp S FSW K10x LTE Downlink Remote Control Parameters lt PrefixLength gt Example Manual operation Remote Commands to Configure the Application NORM Normal cyclic prefix length EXT Extended cyclic prefix length AUTO Automatic cyclic prefix length detection RST AUTO CONF DL CYCP EXT Sets cyclic prefix type to extended See Cyclic Prefix on page 43 CONFigure LTE DL TDD SPSC lt Configuration gt Selects the configuration of a TDD special subframe Parameters lt Configuration gt Example Manual operation lt n
3. 98 e Channel Group Delay 98 e Constellation Daga eccrine er deer ced Rie enun 98 LEE EVM VS CIO MR 99 21 A e c S 99 e EVM nania aa NI Red 100 e EVM VS SUBAN Enen aaie a 100 Frequency Error vs Symbol uiii 100 OMON POND DIRECT 101 LEE POWER SOSCUMII 101 POWervs RB RN Ed dao uA 101 e POWEPFVS RB PDSIRN cn ertet ERR 102 e Spectrum EMISSION MaSK Ra dag nene dd 102 e Value Codes e e nha e RAE 102 6 5 1 1 Adjacent Channel Leakage Ratio For the ACLR result display the number and type of returns values depend on the parameter e TRACE1 User Manual 1173 9370 02 05 94 R amp S FSW K10x LTE Downlink Remote Control uii Aa Remote Commands to Read Trace Data Returns one value for each trace point e LIST Returns the contents of the ACLR table For each channel it returns six values lt channel type gt lt bandwidth gt lt spacing offset gt lt power gt The unit of the lt bandwidth gt and lt spacing offset gt is HZ The unit of the power values is either dBm for the TX channel or dB for the neighborin
4. tette ttt tentent ttt tette 148 SEN EDEN a icai deseri etoile dtum radius ui sa 148 2 2 6 148 SENSe LTE FRAMe COUNt lt Subframes gt This command sets the number of frames you want to analyze Parameters lt Subframes gt lt numeric value gt RST 1 Example FRAM COUN STAT ON Activates manual input of frames to be analyzed FRAM COUN 20 Analyzes 20 frames Manual operation See Number of Frames to Analyze on page 69 SENSe L TE FRAMe COUNt STATe State This command turns manual selection of the number of frames you want to analyze on and off Parameters State ON You can set the number of frames to analyze OFF The R amp S FSW analyzes a single sweep RST ON RA I e AA a User Manual 1173 9370 02 05 147 R amp S FSW K10x LTE Downlink Remote Control X a Remote Commands to Configure the Application Example FRAM COUN STAT ON Turns manual setting of number of frames to analyze on Manual operation See Overall Frame Count on page 68 SENSe LTE FRAMe COUNt AUTO State This command turns automatic selection of the number of frames to analyze on and off Parameters lt State gt ON Selects the number of frames to analyze according to the LTE standard OFF Turns manual selection of th
5. 155 General Window nennen nennen nennen nena 156 Working with Windows in the 157 SSS SSSA User Manual 1173 9370 02 05 4 R amp S FSW K10x LTE Downlink Welcome to the LTE Measurement Application Starting the LTE Measurement Application 1 Welcome to the LTE Measurement Applica tion The R amp S FSW K100 and K104 are firmware applications that add functionality to per form measurements on LTE signals according to the 3GPP standard to the R amp S FSW This user manual contains a description of the functionality that the application provides including remote control operation All functions not discussed in this manual are the same as in the base unit and are described in the R amp S FSW User Manual The latest version is available for download at the product homepage http www2 rohde schwarz com product FSW html Installation Find detailed installing instructions in the Getting Started or the release notes of the R amp S FSW 1 1 Starting the LTE Measurement Application The LTE measurement application adds a new application to the R amp S FSW To activate the application 1 Press the MODE key on the front panel of the R amp S FSW A dialog box opens that contains all operating modes and applications currently available on your R amp S FSW 2 Select the LTE it
6. ad a aenea 133 CONFigure E TEE DE PHICh D URaltion reir rice cere ck rnnt Enna 133 CONFigure ETEE DEPHIGChWUTM iiia tatit he tata ebat dde neta te 133 CONFigure E TEEDE IPHIOh NGParamelter iiec eee 133 CONEFEIgureEETEEDEPHICRENDISROUDS dene xen epe cina 134 GONFigure TEEDEIPHIChIPOMUIBE decd 134 CONFigure E TEEDEIPSOF SSL rrr tereti ee co eie o tied rene Ei Pene ae 134 CONFigure L TE DL PBCH POWer Power This command defines the relative power of the PBCH Parameters Power numeric value RST 0 dB Default unit DB Example CONF DL PBCH POW 1 1 Sets the relative power to 1 1 dB Manual operation See Relative Power on page 57 CONFigure L TE DL PBCH STAT State This command turns the PBCH on and off Parameters State ON OFF RST ON Example CONF DL PBCH STAT ON Activates the PBCH a User Manual 1173 9370 02 05 131 R amp S FSW K10x LTE Downlink Remote Control a a CC Remote Commands to Configure the Application Manual operation See Present on page 57 CONFigure LTE DL PCFich POWer lt Power gt This command defines the relative power of the PCFICH Parameters lt Power gt lt numeric val
7. 17 power VS RB RS ine sana dali result summary ES SPEGCWUM MASK Measurement channel Creating remote adp ai 86 Deleting remote 87 Duplicating 86 Querying remote 5 Renaming remote 88 Replacing remote esses 86 Modulation Inverted I Q et e eee 64 Multicarrier filler rie teeth tenete eei 72 N Nurber of RB centeno eee 42 Numerical results cort eror rrr erre eene 24 Options High pass filter B13 Preamplifier B24 mer mnes P P S SYNC Tx antenna sss 51 e alte PDSCH reference data PDSCH subframe detection Phase EITOF ciens erreur edad PHICH Power spectrum Power vs RB PDSCH stre e Power vs RB RS PRB symbol offset Preamplifier Iure US 67 SOfIKGy utut a dedecus d erede 67 Presetting edt idee ttd decederet 39 P SYNC Relative Power 51 R R amp S DiglGohf eed eret ie 62 R amp S EX IQ BOX 62 Reference level Digital Reference Level Relative power
8. amp S 140 INPut DIQ CDEVice This command queries the current configuration and the status of the digital I Q input from the optional Digital Baseband Interface R amp S FSW B17 For details see the section Interface Status Information for the Digital Baseband Inter face R amp S FSW B17 in the R amp S FSW I Q Analyzer User Manual Return values lt ConnState gt Defines whether a device is connected or not 0 No device is connected 1 A device is connected lt DeviceName gt Device ID of the connected device lt SerialNumber gt Serial number of the connected device lt PortName gt Port name used by the connected device lt SampleRate gt Maximum or currently used sample rate of the connected device in Hz depends on the used connection protocol version indicated by lt SampleRateType gt parameter lt MaxTransferRate gt Maximum data transfer rate of the connected device in Hz lt ConnProtState gt State of the connection protocol which is used to identify the con nected device Not Started Has to be Started Started Passed Failed Done I User Manual 1173 9370 02 05 136 R amp S FSW K10x LTE Downlink Remote Control a PJ NUN NN Remote Commands to Configure the Application lt PRBSTestState gt State of the PRBS test Not Started Has to be Started Started Passed Fai
9. ne eee nba dcn ipn 113 FETCh SUMMary OS TPIMINI IBBDMO tee bated 113 oS TPDEAVEReagS eine orent E E 113 FETCRSUMMary POWE 113 FEICh SUMMary POWerMINIIURmI eee aereo coerente neo 113 FETCh SUMMary POWerEAVERAgOS ener eee eben 113 5 1 1 1 1 2041 740 inr n nnns 113 FETOGh SUMMary QUADerror MINIS aaa aiaa 113 FETCh SUMMary QUADerror AVERages odere telae 113 RE eeu pectet a bett 114 FETCRSUMMary RS TP MINIMUM sac ea oeac oce inaa a ger ra ppt Deut e aa 114 FETCh SUMMaryRSTP AVERage reete RR 114 FEIChSUMMary SERROEMAXIRUIE oce 114 5 1 4 1 aaa 114 FETCh SUMMary SERRoOIEAVERage 2 a 114 FEICh SUMMary TERame etae ute d ee uo edd eee VR ARR DII EYE Tek RR Er ER nk Dao 114 FETCh SUMMary CRESt AVERage This command queries the average crest fa
10. 27 2 4 I Q Measurements Capture p Ip 13 EUMD GG GBM lees Ep MM uM MT 13 EVI ys Symbol Et it er qr 14 Be eerie 15 Frequency Error vs 16 EU VS SUDOM oder Dea oerte oni ado rr eee ed 16 POWER SDOOIQ MD Renee rere reet ete e ee Pe lg ede EY eee 17 Power vs Resource Block dus era dra cre c ee rena 17 Power vs Resource Block 8 44 18 CRANE FJatTiesS o cocer taxed ea ae pog donnera nl acra don esa Vv cranes tesa ta aen Rear a Exc aaa 18 Channel Group Delay eese 19 Channel Flatness Differerice 2 epe rca eate EI nre aa dO da 19 Constellation Diagram PT 20 N 20 Allocation eoni 21 BBM AI etaim nius UD IE IM T 22 Channel Decoder Ixesulls 5 1 e rna Sa gea Y haa qua 22 Result SUmlTidly tede deett rre erreur tote eere Rx tane e De Fuse ke e RUE 24 Maker Table rera ded a a duced 26 _ __ _ __ RA e 11LLL a User Manual 1173 9370 02 05 12 R amp S FSW K10
11. 51 Relative power reference signal 52 Relative power S SYNC 51 Remote commands Basics on Syntax Boolean values Capitalization fret on Character data Data blocks Numeric values niic bet cere Decree dte 83 User Manual 1173 9370 02 05 Optional keywordS 82 1 83 Strings 85 SIXES rn dte thv det nenne 82 Resource BlOCKS 42 Restoring Channel settings roii an 39 Result Display Constellation Selection 77 Result displays Marker table rb reet ne e tentant 26 e inert 24 RF input ROMO eta ase eee re E d 140 S Sample rate Digitall Q ERE 62 Digital QU remote eorr terrre 138 Scrambling of coded bits 72 Selected Subframe eene 47 Sequencer Aborting remote netten 91 Activating remote a Mode remole ecrire nne 92 PLE T 90 Setting P S SYNC Tx antenna
12. 61 Channel decoder results i 22 Channel Estimation 27 Channel flatness 18 Channel flatness difference 219 Identity Physical Layer 44 Channel flatness group delay 19 Impedance Configurable Subframes 247 Remote aio adden e e i EH 145 Configuration Table 247 ru 67 Constellation diagram 20 Input Constellation Selection sss 77 Coupling 222 0 67 Conventions Coupling remote 144 SGPI commands onn pne bene dodi 81 Source Analog Baseband 63 Copying Source digital 1 19 61 Measurement channel 86 Input sample rate ISR Coupling Digital 62 Input remote ssssssseennteeees 144 teh ei rre 7 D M Differential input Markers Analog Baseband B71 remote control 139 Querying position remote 116 Analog Baseband 71 64 Table evaluation method 26 DiglConf Marker table Softkey see also R amp S DiglConf 62 Evaluation method sse 26 Dig
13. euer eR Y YR UAR P Dee 90 SENSE E SVNODSTATeS iioii retinet tanda cocta aoa ctas o o abba pudo 91 ABORt This command aborts a current measurement and resets the trigger system To prevent overlapping execution of the subsequent command before the measurement has been aborted successfully use the OPC or WAI command after ABOR and before the next command For details see the Remote Basics chapter in the R amp S FSW User Manual To abort a sequence of measurements by the Sequencer use the INI Tiate SEQuencer ABORt on page 91 command Note on blocked remote control programs If a sequential command cannot be completed for example because a triggered sweep never receives a trigger the remote control program will never finish and the remote channel GPIB LAN or other interface to the R amp S FSW is blocked for further commands In this case you must interrupt processing on the remote channel first in order to abort the measurement To do so send a Device Clear command from the control instrument to the R amp S FSW on a parallel channel to clear all currently active remote channels Depending on the used interface and protocol send the following commands e Visa viClear e GPIB ibcir e RSIB RSDLLibclr Now you can send the ABORt command on the remote channel performing the mea surement Example ABOR INIT IMM Aborts the current measurement and immediately starts a n
14. 60 Ine 68 Parameter een eene nnnm nennen nennen nns 70 Demodulal ON en 71 Configuring Frequency Sweep 74 ACLR Signal Description 74 SEM Signal 002000000 111 75 PIC C H 76 Analyzing Measurements eeeeeeeeeeeeeenen eene nnne nennen nnn nnns 76 Evaluation Range oid due eene dul reete dean re nig coeur m 76 Srl 78 T User Manual 1173 9370 02 05 3 R amp S FSW K10x LTE Downlink Contents 5 1 3 5 1 4 5 2 6 1 6 2 6 2 1 6 2 2 6 2 3 6 2 4 6 2 5 6 2 6 6 3 6 4 6 4 1 6 4 2 6 5 6 5 1 6 5 2 6 6 6 6 1 6 6 2 6 6 3 6 7 6 7 1 6 7 2 6 7 3 6 8 6 8 1 6 8 2 6 8 3 6 9 6 10 pisse 78 M atKOeL a T T 79 Analyzing Frequency Sweep Measurements eene 79 Remote d90 e 80 Overview of Remote Command Suffixes eese nnn 80 Introductio CP 81 Conventions used in 81 bong and Short Cet ened deste cues eua OOE 82 Numeric SUITTIXOS condito 82 Optional Keywords c cete rena ua tede x dut tuia des dave vies eu dais 82 Alter
15. 62 Ddl gt E 62 Digital Input State Enables or disable the use of the Digital IQ input source for measurements Digital IQ is only available if the Digital Baseband Interface R amp S FSW B17 is installed Remote command INPut SELect on page 140 LA LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL X User Manual 1173 9370 02 05 61 R amp S FSW K10x LTE Downlink Configuration u e_n Configuring Measurements Input Sample Rate Defines the sample rate of the digital I Q signal source This sample rate must correspond with the sample rate provided by the connected device e g a generator If Auto is selected the sample rate is adjusted automatically by the connected device The allowed range is from 100 Hz to 10 GHz Remote command INPut DIQ SRATe on page 138 INPut DIQ SRATe AUTO on page 138 Full Scale Level The Full Scale Level defines the level and unit that should correspond to an I Q sample with the magnitude 1 If Auto is selected the level is automatically set to the value provided by the connected device Remote command INPut DIQ RANGe UPPer on page 138 INPut DIQ RANGe UPPer UNIT on page 138 INPut DIQ RANGe UPPer AUTO on page 137 Adjust Reference Level to Full Scale Level If enabled the reference level is adjusted to the full scale level automatically if any change occurs
16. gt lt gt 125 CONFigure LTE DL SUBFrame lt subframe gt ALLoc lt allocation gt CW lt Cwnum gt MO DUAN GA 126 SENSe LTE DL FORMat PSCD lt Format gt This command selects the method of identifying the PDSCH resource allocation Parameters lt Format gt OFF Applies the user configuration of the PDSCH subframe regardless of the signal characteristics PDCCH Identifies the configuration according to the data in the PDCCH DCls PHYDET Manual PDSCH configuration analysis only if the actual subframe configuration matches the configured one Automatic PDSCH configuration physical detection of the config uration RST PHYD Example DL FORM PSCD OFF Applies the user configuration and does not check the received signal Manual operation See PDSCH Subframe Configuration Detection on page 46 User Manual 1173 9370 02 05 123 R amp S FSW K10x LTE Downlink Remote Control pem EEEEEEEEEEEEEEEEE _ E_ E z_T ELEEE _ a a Remote Commands to Configure the Application SENSe L TE DL DEMod AUTO State This command turns automatic demodulation for downlink signals on and off Parameters State ON OFF RST ON Example DL DEM AUTO ON Activates the auto demodulation for DL Manual operation S
17. 117 SYS lem SEQUENCE T 93 gt sats iren 104 155 156 8 147 SENSe FREQu ney CENTer S iier eer treat er eet oq REA eae 141 141 SENSe FREQuency CENTer STEP LINK FACTO cc ccecceseeereeecereeseceeseeeseseresaeseeenesieesaeeareeeeenreeeeeateaes 142 SENSe FREQuency OFFSet ce ceceecceeeeecereseeeeeeeeeeeeseeeeaeeneesaeeeaeeaeeeaeseeeseseneseesaeseeeeaeseeeserseaeentesineeeeeas 142 SENSe FREQuency GENTer ntt eratis eh d dine eg ea eT e 141 152 SENSe POWer SEM CATegory SENSe POWer SEM CHBS AMPOWer esent rrt nrren nennen 153 Rim RIBQU VEM 148 SENSE SWESp TIME cete ett id nea reet P ed PER ER bal Metering 148 SENSE SYNC STATS pi T 91 SENSe ETETDL DEMOG AUTO oret cae rette redd d e dett da e ded
18. 127 Reference SIgbal oie Pete 127 CSI Reference SIGMA 129 Control Channel 2 reet 131 Chialliel o oc 135 User Manual 1173 9370 02 05 117 R amp S FSW K10x LTE Downlink Remote Control Remote Commands to Configure the Application Signal Characteristics CONFigure t TEEDUPLEeXing eec termed aee hn 118 CON Figure 118 CONFigure TEEDEN Y GOPLreflx 2 eicere 118 GOBlFPFigureEETEEDESTDDISPSQ 119 CON Figure ETE ica ase reuse aeta dada 119 CONFigure L 2 119 CON Figure L TEP DE PEC orte Ee ee eoo a SR ERR tha nme ee Rome 120 GONFISurerETE EBDLEIBEG PLEID eret roget etur en ete teg ER e DR enean enu 120 GoONEiIgureEETEEEBIREGUOR utr hada eto sey accu ad agat RE 120 FETChPECOIDGIOuUp i ueste hag euet ed veces aera se 121 tm edet a 121 MMEMOBEEOADITMONBIDE
19. 51 Settings 44 Auto PDSCH Demod 46 boosting estimation essen 70 Capture Time Cell Identity 44 Channel Bandwidth s 2 42 Channel Estimation eee 71 Configurable Subframes 47 Configuration Table ses 47 Error in Subframe 47 EVM Calculation Method 73 Ext Att 64 erae E 44 multicarrier filter ri Number 42 PBC ETE 56 PCFICH fos OU PDSCH reference data 73 PDSCH subframe detection 46 Phase s zl 57 PRB symbol offset 5 rr Perro erre 56 P SYNC relative power 2 91 Cw 65 2 reet ert 52 Scrambling of coded bits ns d 2 Selected Subframe 2 47 S SYNC relative power 51 Standard 2s 41 ido a 69 TDD UL DL Allocations 43 Timing Used Allocations sien rt bt rtr 47 Signal source RAE 140 Softkey Const SCISCU
20. ATE RES FR ees EXER PER eo Rd dI 113 FETCh SUMMary OSTP MINimum FEICh SUMMary OSTP AVERage 1 hoi tert ete dede ci a vegan eda tee e d 113 FETCh SUMMary POWer MAXimum iessssessseeeeeeeeeneene nen enne nnne tne tenere tenentes erret ntes tnis 113 FETCh SUMMary POWer MINimum essen nennen nennen nre tr enne 113 FEICHhISUMMary POWer AVER ge 3 2 rnit aae i e cete betae uae Era ee Eg 113 50 0 113 5 113 50 nennen enne neret rns sense trenes ei 113 EETCh SUMMarty RSTP MAXIITIUE 114 FEICh SUMMary RSTP MINIImUt eno retta cei elastase 114 FEICHh SUMMary RSTPEAVER ge rre cate eerie tod detis uere ce i Se adds 114 FETCh SUMMary SERRor MAXimum esses nennen 114 FEICIISUMMary SERROEMINiImU ttTI 2 rete e eris inet Ie reta RD nea l eue 114 FETCh SUMMary SERRor AVERage esses enne nnne nns 114 FETCH SUMMaity LER atIe ostii lei reete ede e ee der e d eid near leads 114
21. cell identity group 0 167 NO physical layer identity 0 2 there is a total of 504 different cell IDs If you change one of these three parameters the R amp S FSW automatically updates the other two For automatic detection of the cell ID turn the Auto function on Before it can establish a connection the user equipment must synchronize to the radio cell it is in For this purpose two synchronization signals are transmitted on the downlink These two signals are reference signals whose content is defined by the Physical Layer Identity and the Cell Identity Group The first signal is one of 3 possible Zadoff Chu sequences The sequence that is used is defined by the physical layer identity It is contained in the P SYNC The second signal is one of 168 unique sequences The sequence is defined by the cell identity group This sequence is contained in the S SYNC In addition to the synchronization information the cell ID also determines User Manual 1173 9370 02 05 44 R amp S FSW K10x LTE Downlink Configuration seen HUL ni 5 4 2 1 2 Configuring Measurements e the cyclic shifts for PCFICH PHICH and PDCCH mapping e the frequency shifts of the reference signal The application shows the currently selected cell ID in the channel bar Cell ID 9 Remote command Cell Identity Group CONFigure LTE DL PLC CIDGroup on page 120 FETCh PLC CIDGroup on page 121 Identity CONFigure LT
22. Sna CADW Et 68 e Parameter ESMANN QR RM EG 70 MESI Luo MEET 71 Defining the Signal Characteristics Signal DESCHPUON EE 40 Configuring MIMO SUUS dac ce pedet ve ea ador 45 e PDSCH Setlngs e cere eer ten ine b teeta aad 46 e Advanced Downlink snaa 50 Signal Description The general signal characteristics contain settings to describe the general physical attrib utes of the signal Signal Description 10 MHz 50 RB Sample Rate 15 36 MHz Occupied BW 9 015 MHz Identity FDD Downlink s Test Model Not selected yet On Selecting the LTEMOdQOO urinaire enema e ace tuat 41 Using Test Models 41 Channel Bandwidth Number of Resource 42 User Manual 1173 9370 02 05 40 R amp S FSW K10x LTE Downlink Configuration a m grs Configuring Measurements 43 Conliguriig TDDPEames eere PU 43 Configuring the Physical Layer Cell Identity cct 44 Selecting the LTE Mode The standard defines the LTE mode you are testing The choices you have depend on the configurat
23. Manual operation See Relative Power CSI Reference Signal on page 55 CONFigure L TE DL CSIRs SCI lt CSIRSSubframeConfig gt This command defines the subframe configuration for the CSI reference signal Parameters lt CSIRSSubframeConfijzmber that selects the subframe configuration Range 0 to 154 Example CONF DL CSIR SCI 4 Selects subframe configuration 4 for the CSI reference signal Manual operation See Subframe Configuration on page 55 User Manual 1173 9370 02 05 130 R amp S FSW K10x LTE Downlink Remote Control Remote Commands to Configure the Application CONFigure LTE DL CSIRs STATe lt State gt This command turns the CSI reference signal on and off Parameters lt State gt ON OFF Example CONF DL CSIR STAT ON Turns the CSI reference signal on Manual operation See Present on page 54 Control Channel GONFigure E TEEDEIPBOHISPOWN6Gr Lie eene 131 CON Figure PETE DLIPBORTS VAL eaa E dba aaa 131 CONFigureEL TEP DEP CFICN POWGR 132 CONFiISurebETEEDISPOPISTES TAE a a tiens 132 CONFUT LTE DL POCCH EORNM Lerner rere rete ek rr tet eem necs 132 GONFigurerETEEBDEIPDOQOh NOPE ieu eere ce Erico Een ote 132 GONFigurebETEEDISPDOGOCR POWOT
24. The reference signal settings contain settings to describe the physical attributes and structure of the reference signal The reference signal settings are part of the Advanced Settings tab of the Signal Description dialog box User Manual 1173 9370 02 05 51 R amp S FSW K10x LTE Downlink Configuration Configuring Measurements Advanced Settings Reference Signal Rel Power Reference 52 Rel Power Reference Signal Defines the relative power of the reference signal compared to all the other physical signals and physical channels Note that this setting gives you an offset to all other relative power settings Remote command CONFigure LTE DL REFSig POWer on page 127 Configuring the Positioning Reference Signal The positioning reference signal settings contain settings to describe the physical attrib utes and structure of the positioning reference signal The positioning reference signal settings are part of the Advanced Settings tab of the Signal Description dialog box Advanced Settings Reference Signal Present Bandwidth 1 0 E mE 52 BINOMO cm 52 eroe nier 53 Num Subframes NL PRS dct nicer eta ecc eo ridere deae e een cents 53 Relative Power Positioning Reference Signal eee 53 Frame Number OSO 53 Present Turns the
25. 4 of symbols bits hexadecimal binary numbers gt User Manual 1173 9370 02 05 95 R amp S FSW K10x LTE Downlink Remote Control eee aCe Rl Remote Commands to Read Trace Data All values have no unit The format of the bitstream depends on Bit Stream Format The lt allocation ID gt lt codeword gt and lt modulation gt are encoded For the code assignment see chapter 6 5 1 21 Return Value Codes on page 102 For symbols or bits that are not transmitted the command returns e FF if the bit stream format is Symbols e 9 if the bit stream format is Bits For symbols or bits that could not be decoded because the number of layer exceeds the number of receive antennas the command returns e FE if the bit stream format is Symbols e 8 if the bit stream format is Bits Note that the data format of the return values is always ASCII Example Bit Stream Sub Allocati j p ocation ode Modulation Symbol frame ID word Index PBCH 1 1 0 01 01 00 02 3 00 01 O2 01 O2 O1 OO 03 OO Oz 02 Bit Stream PBCH TEL 16 0 j 03 02 00 0 01 01 PBCH 1 1 32 03 TRAC DATA TRACE1 would return 0 12 0 2 0 01 01 00 02 03 00 01 02 01 02 01 lt continues like this until the next data block starts or the end of data is reached gt 0 12 0 2 32 03 02 03 03 03 03 01 03 00 03 6 5 1 4 Capture Buffer For the Capture Buffer result display the command returns one
26. Remote command LAY ADD 1 LEFT CDEC TRACe DATA Result Summary The Result Summary shows all relevant measurement results in numerical form com bined in one table SCPI command LAY ADD 1 LEFT RSUM Contents of the result summary 1 Result Summary Selection Subframe s ALL Selection Antenna 1 Frame Result 1 1 00 1 01 The table is split in two parts The first part shows results that refer to the complete frame For each result the minimum mean and maximum values are displayed It also indicates limit check results where available The font of Pass results is green and that of Fail results is red In addition to the red font the application also puts a red star in front of failed results e EVM PDSCH QPSK User Manual 1173 9370 02 05 24 R amp S FSW K10x LTE Downlink Measurements and Result Displays Measurements Shows the EVM for all QPSK modulated resource elements of the PDSCH channel in the analyzed frame FETCh SUMMary EVM DSQP AVERage on page 108 e EVM PDSCH 16QAM Shows the EVM for all 16QAM modulated resource elements of the PDSCH channel in the analyzed frame FETCh SUMMary EVM DSST AVERage on page 108 e EVM PDSCH 64QAM Shows the EVM for all G4QAM modulated resource elements of the PDSCH channel in the analyzed frame FETCh SUMMary EVM DSSF AVERage on page 109 By default all EVM results are in To view the EVM results in dB change the EVM U
27. User Manual 1173 9370 02 05 75 R amp S FSW K10x LTE Downlink Analysis Analyzing Measurements 5 Analysis 5 1 5 1 1 Analyzing Measurements e Evaluation 76 o EE 78 diii s d wo 78 e MINO RM 79 Evaluation Range The evaluation range defines the signal parts that are considered during signal analysis Subframe Selection Allocation Symbol Carrier Location SUPA S EM 76 Evaluation Range for the Constellation Diagram seen 77 Subframe Selection Selects a particular subframe whose results the software displays You can select a particular subframe for the following measurements Result Summary EVM vs Carrier EVM vs Symbol Channel Flatness Channel Group Delay Channel Flatness Difference Constellation Diagram Allocation Summary and Bit Stream If All is selected either the results from all subframes are displayed at once or a statistic is calculated over all analyzed subframes Selecting All either displays the results over all subframes or calculates a statistic over all subframes that have been analyzed User Manual 1173 9370 02 05 76 R amp S FSW K10x LTE Downlink Analysis ea SS a Analyzing Measurements Example Subframe selection If you select all subframes All the application shows three t
28. 1 The imbalance estimation makes it possible to evaluate the modulator gain balance 1 AQ 3 6 and the quadrature mismatch arg 1 AQ 3 7 based the complex valued estimate 4 Other measurement variables Without going into detail the EUTRA LTE downlink measurement application additionally provides the following results e Total power e Constellation diagram e Group delay e Q offset e Crest factor e Spectral flatness 3 4 Performing Time Alignment Measurements The MIMO measurement application provides the possibility to perform time alignment measurements between the different antennas for 2 or 4 TX antenna MIMO configura tions The time alignment error values represent the time offset between the considered antenna and antenna 1 and will be displayed in the result summary A schematic descrip tion of the results is provided in figure 3 3 I User Manual 1173 9370 02 05 35 R amp S FSW K10x LTE Downlink Measurement Basics Performing Time Alignment Measurements A test setup for time alignment measurements is shown in figure 3 2 The dashed con nections are only required for 4 TX antenna MIMO configuration For best measurement result accuracy it is recommended to use cables of the same length and identical combin ers as adders Fig 3 2 Time alignment measurement hardware setup For a successful time alignment measurement make sure to set up the measurement corr
29. 1 at the bottom or right Usage Query only LAYout IDENtify WINDow lt WindowName gt This command queries the index of a particular display window Note to query the name of a particular window use the LAYout WINDow lt n gt IDENtify query Query parameters lt WindowName gt String containing the name of a window Return values Windowlndex Index number of the window Usage Query only a 5g WXKiKmUOEIOxVyAP Gb AA D C DNAaGO OG SAA User Manual 1173 9370 02 05 159 R amp S FSW K10x LTE Downlink Remote Control b a a_a Working with Windows in the Display LAYout REMove WINDow lt WindowName gt This command removes a window from the display Parameters lt WindowName gt String containing the name of the window In the default state the name of the window is its index Usage Event LAYout REPLace WINDow lt WindowName gt lt WindowType gt This command replaces the window type for example from Diagram to Result Sum mary of an already existing window while keeping its position index and window name add a new window use the LAYout ADD WINDow command Parameters lt WindowName gt String containing the name of the existing window By default the name of a window is the same as its index To determine the name and index of all active windows use the LAYout CATalog WINDow query lt WindowType gt Type of result display you want to use in the exis
30. Allocation No of RBs Rel Power per EVM Frame ID Power dB Modulation RE dBm The rows in the table represent the allocations with allocation ALL being a special allo cation that summarizes all allocations that are part of the subframe A set of allocations form a subframe The subframes are separated by a dashed line The columns of the table contain the following information The rows in the table represent the allocations A set of allocations form a subframe The subframes are separated by a dashed line The columns of the table contain the follwing information e Subframe Shows the subframe number e Allocation ID Shows the type ID of the allocation e Number of RB Shows the number of resource blocks assigned to the current PDSCH allocation e Rel Power dB Shows the relative power of the allocation e Modulation Shows the modulation type e Power per RE dBm Shows the power of each resource element in dBm e EVM N User Manual 1173 9370 02 05 21 R amp S9FSW K10x 2 Bit Sub Allocation Code Frame word LTE Downlink Measurements and Result Displays Measurements Shows the EVM of the allocation The unit depends on your selection Remote command LAY ADD 1 LEFT ASUM TRACe DATA Bit Stream Starts the Bit Stream result display This result display shows the demodulated data stream for each data allocation Depend ing on the Bit Stream Format the numbers represent
31. DL BW page 118 Cyclic Prefix The cyclic prefix serves as a guard interval between OFDM symbols to avoid interferen ces The standard specifies two cyclic prefix modes with a different length each The cyclic prefix mode defines the number of OFDM symbols in a slot e Normal A slot contains 7 OFDM symbols e Extended A slot contains 6 OFDM symbols The extended cyclic prefix is able to cover larger cell sizes with higher delay spread of the radio channel e Auto The application automatically detects the cyclic prefix mode in use Remote command CONFigure LTE DL CYCPrefix on page 118 Configuring TDD Frames TDD frames contain both uplink and downlink information separated in time with every subframe being responsible for either uplink or downlink transmission The standard specifies several subframe configurations or resource allocations for TDD systems TDD UL DL Allocations Selects the configuration of the subframes in a radio frame in TDD systems The UL DL configuration or allocation defines the way each subframe is used for uplink downlink or if it is a special subframe The standard specifies seven different configura tions Subframe Number and Usage U uplink D downlink S special subframe Conf of Special Subframe User Manual 1173 9370 02 05 43 R amp S FSW K10x LTE Downlink Configuration a NELLO XC C a ee Configuring Measurements In combination with the
32. FSW K10x LTE Downlink Remote Control 6 8 6 8 1 Analysis SENSe POWer SEM CATegory lt Category gt This command selects the SEM limit category as defined in 3GPP TS 36 104 Parameters lt Category gt A Category A Wide Area base station B1 Category B Opt 1 Wide Area base station B2 Category B Opt 2 Wide Area base station HOME Home base station LARE Local Area base station RST A Example POW SEM CAT B Selects SEM category B Manual operation See Category on page 75 SENSe POWer SEM CHBS AMPower lt Power gt This command defines the aggregated maximum power for home base stations Parameters lt Power gt Numeric value that defines the maximum aggregate power Default unit dBm Example POW SEM CHBS AMP 0 Defines a power of 0 dBm Manual operation See Category on page 75 Analysis Evaluation des 153 VARS SCAO ceci nie retinitis iia E ed 154 FoU SOUNS aa a T EEE OET 155 Evaluation Range CONFigure PETE LOCION irnia a 154 SENSe PLTE SUBFrame 1 in 154 I User Manual 1173 9370 02 05 153 R amp S FSW K10x LTE Downlink Remote Control SS a NEC R Analysis CONFigure LTE DL CONS LOCation lt Location gt This command selects the data source of the co
33. For details on synchronization see the Remote Basics chapter in the R amp S FSW User Manual Parameters Mode SINGIe Each measurement is performed once regardless of the chan nel s sweep mode considering each channels sweep count until all measurements in all active channels have been performed CONTinuous The measurements in each active channel are performed one after the other repeatedly regardless of the channel s sweep mode in the same order until the Sequencer is stopped CDEFined First a single sequence is performed Then only those channels in continuous sweep mode INIT CONT ON are repeated RST CONTinuous Example SYST SEQ ON Activates the Sequencer INIT SEQ MODE SING Sets single sequence mode so each active measurement will be performed once INIT SEQ IMM Starts the sequential measurements ERE RU A User Manual 1173 9370 02 05 92 R amp S FSW K10x LTE Downlink Remote Control Remote Commands to Read Trace Data SYSTem SEQuencer lt State gt This command turns the Sequencer on and off The Sequencer must be active before any other Sequencer commands INIT SEQ are executed otherwise an error will occur A detailed programming example is provided in the Operating Modes chapter in the R amp S FSW User Manual Parameters lt State gt OFF 0 1 ON 1 The Sequencer is activated and a sequential measurement is started immediately OFF 0 The Sequencer
34. ON OFF RST ON Example DL DEM BEST ON Turns boosting estimation on Manual operation See Boosting Estimation on page 70 SENSe LTE DL DEMod CESTimation lt Type gt This command selects the channel estimation type for downlink signals Parameters lt Type gt TGPP 3GPP EVM definition PIL Optimal pilot only PILP Optimal pilot and payload RST TGPP Example DL DEM CEST TGPP Use 3GPP EVM definition for channel estimation Manual operation See Channel Estimation on page 71 Compensating Measurement Errors SENSe L TE DL TRACking PHASe eec tette ttt tentent tcs 151 SENSe L TE DL TRACking TIME cnc tette 152 SENSe LTE DL TRACking PHASe Type This command selects the phase tracking type for downlink signals Parameters Type OFF Deactivate phase tracking PIL Pilot only PILP Pilot and payload RST OFF Example DL TRAC PHAS PILPAY Use pilots and payload for phase tracking RETE EA N User Manual 1173 9370 02 05 151 R amp S FSW K10x LTE Downlink Remote Control X 6 7 3 Remote Commands to Configure the Application Manual operation See Phase on page 71 SENSe L TE DL TRACking TIME State This command turns timing tracking for downlink signals on and off Parameters State ON OFF RST OFF Example DL TRAC TIME ON Activates timing tracking Manual
35. Parameters lt State gt ON OFF RST OFF Example INP EATT AUTO ON Turns automatic selection of electronic attenuation level on Manual operation See Attenuating the Signal on page 66 INPut lt n gt EATT STATe State This command turns the electronic attenuator on and off This command is available with option R amp S FSW B25 but not if R amp S FSW B17 is active Parameters State ON OFF RST OFF Example INP EATT STAT ON Turns the electronic attenuator on Manual operation See Attenuating the Signal on page 66 RETE RU N User Manual 1173 9370 02 05 146 R amp S FSW K10x LTE Downlink Remote Control SSS IX VADO ER E UU E T a 6 7 2 3 Remote Commands to Configure the Application SENSe ADJust LEVel This command initiates a single internal measurement that evaluates and sets the ideal reference level for the current input data and measurement settings This ensures that the settings of the RF attenuation and the reference level are optimally adjusted to the signal level without overloading the R amp S FSW or limiting the dynamic range by an S N ratio that is too small Example ADJ LEV Usage Event Manual operation See Defining a Reference Level on page 65 Signal Capture Data Capture SENSe L TE FRAMe COUNL encre ttt tentent ttt tentes sess 147 SENSe L TE FRAMe COUNESTATe eccentric 147 SENSe L
36. Remote command INPut DIQ RANGe COUPling on page 137 Connected Instrument Displays the status of the Digital Baseband Interface connection If an instrument is connected the following information is displayed e Name and serial number of the instrument connected to the Digital Baseband Inter face Used port e Sample rate of the data currently being transferred via the Digital Baseband Interface Level and unit that corresponds to an I Q sample with the magnitude 1 Full Scale Level if provided by connected instrument Remote command INPut DIQ CDEVice on page 136 DiglConf Starts the optional R amp S DiglConf application This softkey is available in the In Output menu but only if the optional software is installed Note that R amp S DiglConf requires a USB connection not LAN from the R amp S FSW to the R amp S EX IQ BOX in addition to the Digital Baseband Interface R amp S FSW B17 connection R amp S DiglConf version 2 20 360 86 Build 170 or higher is required To return to the R amp S FSW application press any key on the front panel The R amp S FSW application is displayed with the Input Output menu regardless of which key was pressed N User Manual 1173 9370 02 05 62 R amp S FSW K10x LTE Downlink Configuration a NELLO XC C a ee Configuring Measurements For details on the R amp S DiglConf application see the R amp SGEX IQ BOX Digital Interface Module R amp SGDi
37. of the Spectrum mode For more information refer to the documentation of the R amp S FSW To configure settings gt Select any button in the Overview to open the corresponding dialog box Select a setting in the channel bar at the top of the measurement channel tab to change a specific setting Preset Channel Select the Preset Channel button in the lower lefthand corner of the Overview to restore all measurement settings in the current channel to their default values User Manual 1173 9370 02 05 39 R amp S FSW K10x LTE Downlink Configuration 4 2 4 2 1 4 2 1 1 Configuring Measurements Note that the PRESET key on the front panel restores all measurements in all mea surement channels on the R amp S FSW to their default values Remote command SYSTem PRESet CHANnel EXECute on 117 Specifics for The measurement channel may contain several windows for different results Thus the settings indicated in the Overview and configured in the dialog boxes vary depending on the selected window Select an active window from the Specifics for selection list that is displayed in the Overview and in all window specific configuration dialog boxes The Overview and dialog boxes are updated to indicate the settings for the selected window Configuring I Q Measurements e Defining the Signal Characteristics nid toe Eta Di ete ed 40 LSU MEI 60
38. 1 12 dB 3 1 1 640 w 1 12 dB 4 1 1 64QAM 2 12 dB 5 2 6 3 Enhanced VRB Number Offset Rho A Settings GAP of RBs RB Power dB w 12 dB Modulation 12 1 1 640 12 dB 1 1 64QAM 12 dB e JDeomoduloting the 46 e Configuring POSCH SUb TalTIes 47 Demodulating the 5 The application allows you to automatically demodulate the PDSCH and detect the sub frame configuration of the signal you are testing PDSCH Subframe Configuration Detection Selects the method of identifying the PDSCH resource allocation e Off Uses the user configuration to demodulate the PDSCH subframe If the user config uration does not match the frame that was measured a bad EVM will result PDCCH protocol Sets the PDSCH configuration according to the data in the protocol of the PDCCH DCls e Physical detection The physical detection is based on power and modulation detection Physical detection makes measurements on TDD E TMs without a 20 ms trigger signal possible For more information on automatic demodulation see Auto PDSCH Demodulation on page 46 Remote command SENSe LTE DL FORMat PSCD on page 123 Auto PDSCH Demodulation Turns automatic demodulation of the PDSCH on and off Turn on automatic PDSCH demodulation for automatic detection of the PDSCH resource allocation The application is able to detect the PDSCH reso
39. 21 See Bit Stream on page 22 See Channel Decoder Results on page 22 See Result Summary on page 24 See Marker Table on page 26 Table 6 2 lt WindowType gt parameter values for LTE Downlink Measurement application Parameter value Window type ASUM Allocation Summary BSTR Bitstream CBUF Capture Buffer CCDF CCDF CDEC Channel Decoder Results FLAT Channel Flatness CONS Constellation Diagram EVCA EVM vs Carrier EVRP EVM vs RB User Manual 1173 9370 02 05 158 R amp S FSW K10x LTE Downlink Remote Control bm Working with Windows in the Display Parameter value Window type EVSU EVM vs Subframe EVSY EVM vs Symbol FEVS Frequency Error vs Symbol GDEL Group Delay MTAB Marker Table PSPE Power Spectrum PVRP Power vs RB PDSCH PVRR Power vs RB RS RSUM Result Summary LAYout CATalog WINDow This command queries the name and index of all active windows from top left to bottom right The result is a comma separated list of values for each window with the syntax lt WindowName_1 gt lt Windowlndex_1 gt lt WindowName_n gt lt Windowlndex_n gt Return values lt WindowName gt string Name of the window In the default state the name of the window is its index Windowlndex numeric value Index of the window Example LAY CAT Result Et uztlt l Two windows are displayed named 2 at the top or left and
40. 93 dBm 67 17 dB 8 93 dB 988 81054 MHz 31 93 dBm 77 17 dB 19 43 dB 1 01044 GHz 32 06 dBm 77 29 dB 19 56 dB 1 01690 GHz 25 05 dBm 70 29 dB 12 05 dB Remote command CONF MEAS ESP TRACe DATA E User Manual 1173 9370 02 05 30 R amp S FSW K10x LTE Downlink Measurement Basics Symbols and Variables 3 Measurement Basics This chapter provides background information on the measurements and result displays available with the LTE Analysis Software Symbols and 31 9 adaa 32 e The LTE Downlink Analysis Measurement 32 e Performing Time Alignment 35 3 1 Symbols and Variables The following chapters use various symbols and variables in the equations that the measurements are based on The table below explains these symbols for a better under standing of the measurement principles data symbol actual decided Dix boosting factor Af Af spree carrier frequency offset between transmitter and receiver actual coarse estimate residual carrier frequency offset relative sampling frequency offset His ik channel transfer function actual estimate i time index
41. CSI Reference 4224 40 eene 55 SUB AM Se COMMGUMAUGIN EH 55 Frame Number Onset i e ree eo 55 Present Turns the CSI reference signal on and off Remote command CONFigure LTE DL CSIRs STATe on page 131 Antenna Ports Defines the number of antenna ports that transmit the CSI reference signal The CSI reference signals are transmitted on one two four or eight antenna ports using e p 15 e p 15to 16 e p 15to 18 e p 15to 22 Note that the current software release supports a maximum number of 4 antennas Remote command CONFigure LTE DL CSIRs NAP on page 129 Configuration Index Defines the CSI reference signal configuration as defined in 3GPP TS 36 211 table 6 10 5 2 1 2 Remote command CONFigure LTE DL CSIRs CI on page 129 User Manual 1173 9370 02 05 54 R amp S FSW K10x LTE Downlink Configuration sea SS a ee Configuring Measurements Overwrite PDSCH Turns overwriting of PDSCH resource elements for UEs that do not consider the CSI reference signal on and off If on the software assumes that the UE is not configured to consider CSI reference sig nals Thus resource elements of the CSI reference signal overwrite the PDSCH resource elements Note that the bit stream result displays labels these resource element with a sign Remote command CONFigure LTE DL CSIRs OPDSch on page 130 Relative Power CSI Reference Si
42. DEMed BACHanrnels eroe teet oer eee caedere baa edet a 150 1 150 rne delent dde du 150 SENSe LTE DL DEMod MCFilter State This command turns suppression of interfering neighboring carriers on and off e g LTE WCDMA GSM etc Parameters State ON OFF RST OFF Example DL DEM MCF ON Turns suppression on of neighboring carriers on Manual operation See Multicarrier Filter on page 72 SENSe LTE DL DEMod CBSCrambling lt State gt This command turns scrambling of coded bits for downlink signals on and off Parameters lt State gt ON OFF RST ON Example DL DEM CBSC ON Activate scrambling of coded bits Manual operation See Scrambling of Coded Bits on page 72 CONFigure LTE DL MIMO CROSstalk lt State gt This command turns MIMO crosstalk compensation on and off Parameters lt State gt ON OFF RST OFF Example CONF DL MIMO CROS ON Turns crosstalk compensation on Manual operation See Compensate Crosstalk on page 72 N User Manual 1173 9370 02 05 149 R amp S FSW K10x LTE Downlink Remote Control a a i J n Remote Commands to Configure the Application SENSe LTE DL DEMod DACHannels lt State gt This command turns the
43. Downlink Configuration ee ee ee ars Configuring Measurements Configuring the Synchronization Signal The synchronization signal settings contain settings to describe the physical attributes and structure of the synchronization signal The synchronization signal settings are part of the Advanced Settings tab of the Signal Description dialog box Advanced Settings Synchronization Signal P S SYNC Tx Antenfia 2 reet 51 PSSYING Relative 51 S 0 YING Relative ete ded 51 P S SYNC Tx Antenna Selects the antenna that transmits the P SYNC and the S SYNC When selecting the antenna you implicitly select the synchronization method If the selected antenna transmits no synchronization signal the application uses the reference signal to synchronize Note that automatic cell ID detection is not available if synchroni zation is based on the reference signal Remote command CONFigure LTE DL SYNC ANTenna on page 126 P SYNC Relative Power Defines the power of the P SYNC signals relative to the reference signal Remote command CONFigure LTE DL SYNC PPOWer on page 126 S SYNC Relative Power Defines the power of the S SYNC signals relative to the reference signal Remote command CONFigure LTE DL SYNC SPOWer on page 127 Configuring the Reference Signal
44. During the transmission of these data bytes all end or other control signs are ignored until all bytes are transmitted 0 specifies a data block of indefinite length The use of the indefinite format requires a NL END message to terminate the data block This format is useful when the length of the transmission is not known or if speed or other considerations prevent segmentation of the data into blocks of definite length 6 3 Remote Commands to Select the LTE Application INS TatmenttoREStGDDPLIGa eroi etee coena eiae ue tnde ceo Eaa LE aiea EE NAA 86 INS trument C REale NEW iinn desc ton re aaa 86 NS T men CREME REPLICO nere E ED eH MER EE 86 INSTI mentDELele oec tese aae eo 87 UST MT 87 88 INSTrument SELect ue 88 ee User Manual 1173 9370 02 05 85 R amp S FSW K10x LTE Downlink Remote Control SSS ee M M Sext Remote Commands to Select the LTE Application INSTrument CREate DUPLicate This command duplicates the currently selected measurement channel i e starts a new measurement channel of the same type and with the identical measurement settings The name of the new channel is the same
45. FETCh SUMMary QUADerror AVERage on page 113 e Shows the reference signal transmit power as defined in 3GPP TS 36 141 It is required for the DL RS Power test e 1 t AALLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL U LULULULULULUILSS User Manual 1173 9370 02 05 25 R amp S FSW K10x LTE Downlink Measurements and Result Displays Time Alignment Measurements It is an average power and accumulates the powers of the reference symbols within a subframe divided by the number of reference symbols within a subframe FETCh SUMMary RSTP AVERage on page 114 e OSTP Shows the OFDM symbol transmit power as defined in 3GPP TS 36 141 It accumulates all subcarrier powers of the 4th OFDM symbol The 4th out of 14 OFDM symbols within a subframe in case of frame type 1 normal CP length con tains exclusively PDSCH FETCh SUMMary OSTP AVERage on page 113 e Power Shows the average time domain power of the analyzed signal FETCh SUMMary POWer AVERage on page 113 e Crest Factor Shows the peak to average power ratio of captured signal FETCh SUMMary CRESt AVERage on page 110 Marker Table Displays a table with the current marker values for the active markers Stimulus Response Function Function Result Remote command LAY ADD 1 RIGH MTAB see LAYout ADD WINDow on page 157 Res
46. Hine timing estimate coarse fine k subcarrier index OFDM symbol index Neer length of FFT Ng number of samples in cyclic prefix guard interval Ns number of Nyquist samples Nee number of resource elements n subchannel index subframe index Nik noise sample common phase error r i received sample in the time domain received sample uncompensated partially compen sated equalized in the frequency domain T useful symbol time RU SSS User Manual 1173 9370 02 05 31 R amp S FSW K10x LTE Downlink Measurement Basics SS SS SS SSS SSS EEE a as 3 2 3 3 3 3 1 Overview guard time Ts symbol time Overview The digital signal processing DSP involves several stages until the software can present results like the EVM Data Capture adn ynchronization E UTRA LTE downlink Channel estimation equalization measurement application Analysis The contents of this chapter are structered like the DSP The LTE Downlink Analysis Measurement Application The block diagram in figure 3 1 shows the EUTRA LTE downlink measurement applica tion from the capture buffer containing the data to the actual analysis block The outcome of the fully compensated reference path green are the estimates of the transmitted data symbols Depending on the user defined compensation the receiv
47. K10x LTE Downlink Index A EVM vS subfrarmie ince ta ia eta cei anak 16 EVM vs symbol 14 ACGIDG coupliligi c eosdem d epe hun FERE eR nena o Fer aux 67 External Attenuation 66 ACLR Allocation summary 21 F Analog Baseband B71 cos 63 Filters Input type remote control 140 High pass remote ssse 139 Auto Detection Cell Identity 44 High pass RF input s 61 Auto PDSCH Demodulation 46 YIG remote 139 Frequency 2 64 B Frequency error vs symbol 16 Full scale level Bit strealTi annee ier eene vr 22 Digital 62 Boosting estimation 70 Digital 1 remote 2 137 138 Unit digital remote 138 Capture buffer as 19 Capture Time 68 Hardware settings CCDF ue 20 Displayed 8 Cell ID p 44 High pass filter Cell Identity Group d 44 REMOTE dev tes 139 Channel Bandwidth 42
48. R amp S FSW continues the measurement until all frames have been captured The parameter is read only if e the overall frame count is inactive e the data is captured according to the standard Remote command SENSe LTE FRAMe COUNt on page 147 Swap Swaps the real branch and the imaginary Q branch parts of the signal Remote command SENSe SWAPiq on page 148 4 2 3 2 Triggering Measurements The trigger functionality of the LTE measurement application is the same as that of the R amp S FSW For a comprehensive description of the available trigger settings see the documentation of the R amp S FSW Note that some trigger sources available in Spectrum mode are not available in the LTE application Note also that the Preview and Gate functionality are only available for fre quency sweep measurements ACLR and SEM Gated frequency sweep measurements The application automatically selects the correct gate settings delay and length accord ing to the TDD configuration User Manual 1173 9370 02 05 69 R amp S FSW K10x LTE Downlink Configuration 4 2 4 4 2 4 1 Configuring Measurements The trigger settings are part of the Trigger tab of the Trigger Signal Capture dialog box Trigger Trigger Source Trigger In Out Ext Triggeri Drop Out Time Slope Holidot For more information on triggering measurements see the documentation of the R amp S FSW P
49. SENSe L TET DL DEMod BESTimation esessesseeeeeeeneenenenen emen nennen enne SENSe L TE DL DEMod CBSCrambling eese enne nennen A SENSe ETEEDE DEMOG CES Tim tiOh irrita t SENSe LTE DL DEMod DACHannels 1 SENSe ETEEDLE DEMOG MCEIiIDOrT erect recte SENSe ETEEDE DEMOGd PRDalta icit etre SENSe ETEEDLE FORMAEPSQD 1 iore niter dense ttait sapadane ade da pese sad tcd dut SENSe L TET DL TRACking PHASGe essssssseseeeeeeee nennen REO M User Manual 1173 9370 02 05 167 SENSe LTE DL TRACKING TIME eesosa eonna a a a a a i eee a aaa ir Ta anios 152 I SENSe EETEEFRAMGS COUNL iiri eie EE ret en dE a 147 5 148 SENSe ETEEFRAMS COUNESTATS tette pede tte b p rye e adu Re ep RR 147 SENSe LTE SUBFrame SELect eceeceeceeceeeeeeeeeeeeeeeeseeeeeeeeeeeeceeeaeseeesaeesseseeeseseaeeneesireseeseneeneeeaeeereeas 154 R amp S FSW
50. TFRame This command queries the sub frame start offset as shown in the Capture Buffer result display Return values lt Offset gt Time difference between the sub frame start and capture buffer start Default unit s Example FETC SUMM TFR Returns the sub frame start offset Usage Query only Manual operation See Capture Buffer on page 13 User Manual 1173 9370 02 05 114 R amp S FSW K10x LTE Downlink Remote Control b a Remote Commands to Read Numeric Results 6 6 3 Marker Table GALGulate lt n gt DEL Tamarkers M gt 115 lt gt lt gt 04404 0000000 115 GAECulatesmsMARKersSmpsX etre bend 115 116 CALCulate lt n gt DELTamarker lt m gt X lt Position gt This command moves a delta marker to a particular coordinate on the x axis If necessary the command activates the delta marker and positions a reference marker to the peak power Example CALC DELT X Outputs the absolute x value of delta marker 1 CALCulate lt n gt DELTamarker lt m gt Y This command queries the relative position of a delta marker on the y axis If necessary the command activates the delta marker first To
51. Teta scent uncertain eerte XE pepper enne 126 _ erre enne 126 CONFigure ETEEDE SYNG SPOWAOtE n ertt eg Eee tre rh eoe EFC etu Eds 127 CONFigure DEZTDB SPSG erret ine teuer treo iaa ee 119 CONFigure ETETDESTDD U DO br etra cae th epo pe ape ee rade de 119 CONFigure LTE DUPLexing CONFigure LTE LDIRection CONFigure LTE MEASUOMe Mts a eh Er eee 116 DISPlay FORMat chr ede dete ien perte pt Dee od eec nde nice dade p re Ded Aen 156 DISPlay WINBOWsnP SIZE Pieter E Fe Pete ue a Te etu erbe 156 DISPlay WINDow n TRACe Y SCALe AUTO 154 DISPlay WINDow lt n gt TRACe Y SCALe MAXimum DISPlay WINDow n TRACe Y SCALe MINimum esent DISPlay WINDow n TRACe Y SCALe RLEVel sese lt gt 2 143 5 121 igo utes prc eae
52. and Result Displays Measurements This result display shows the Error Vector Magnitude EVM of the subcarriers With the help of a marker you can use it as a debugging technique to identify any subcarriers whose EVM is too high The results are based on an average EVM that is calculated over the resource elements for each subcarrier This average subcarrier EVM is determined for each analyzed sub frame in the capture buffer If you analyze all subframes the result display contains three traces e Average EVM This trace shows the subcarrier EVM averaged over all subframes e Minimum EVM This trace shows the lowest average subcarrier EVM that has been found over the analyzed subframes e Maximum EVM This trace shows the highest average subcarrier EVM that has been found over the analyzed subframes If you select and analyze one subframe only the result display contains one trace that shows the subcarrier EVM for that subframe only Average minimum and maximum val ues in that case are the same For more information see Subframe Selection on page 76 The x axis represents the center frequencies of the subcarriers On the y axis the EVM is plotted either in or in dB depending on the EVM Unit 3 EVM vs Carrier 1 Avg 2 Min 3 Max Start 7 68 MHz 1 54 MHz Stop 7 68 MHz Remote command LAY ADD 1 LEFT EVCA TRACe DATA EVM vs Symbol Starts the EVM vs Symbol result display This result display shows
53. cyclic prefix the special subframes serve as guard periods for switches from uplink to downlink They contain three parts or fields DwPTS The DwPTS is the downlink part of the special subframe It is used to transmit down link data e GP The guard period makes sure that there are no overlaps of up and downlink signals during a switch e UpPTS The UpPTS is the uplink part of the special subframe It is used to transmit uplink data The length of the three fields is variable This results in several possible configurations of the special subframe The LTE standard defines 9 different configurations for the spe cial subframe However configurations 7 and 8 only work for a normal cyclic prefix If you select it using an extended cyclic prefix or automatic detection of the cyclic prefix the application will show an error message Remote command Subframe CONFigure LTE DL TDD UDConf on page 119 Special Subframe CONFigure LTE DL TDD SPSC on page 119 Configuring the Physical Layer Cell Identity The cell ID cell identity group and physical layer identity are interdependent parameters In combination they are responsible for synchronization between network and user equipment The physical layer cell ID identifies a particular radio cell in the LTE network The cell identities are divided into 168 unique cell identity groups Each group consists of 3 phys ical layer identities According to 3 Nip Nip
54. either bits bit order or symbols symbol order Selecting symbol format shows the bit stream as symbols In that case the bits belonging to one symbol are shown as hexadecimal numbers with two digits In the case of bit format each number represents one raw bit Symbols or bits that are not transmitted are represented by a If a symbol could not be decoded because the number of layers exceeds the number of receive antennas the application shows a sign Stream Symbol Modulation ES Al 8 The table contains the following information e Subframe Number of the subframe the bits belong to e Allocation ID Channel the bits belong to Codeword Code word of the allocation e Modulation Modulation type of the channels e Bit Symbol Index Shows the position of the table row s first bit or symbol within the complete stream e Bit Stream The actual bit stream Remote command LAY ADD 2 1 LEFT BSTR TRACe DATA Channel Decoder Results The Channel Decoder result display is a numerical result display that shows the charac teristics of various channels for a particular subframe e Protocol information of the PBCH PCFICH and PHICH User Manual 1173 9370 02 05 22 R amp S FSW K10x LTE Downlink Measurements and Result Displays Measurements e Information about the DCls in the PDCCH e Decoded bitstream for each PDCCH The size of the table thus depends on the number of subframes in th
55. existing window the new window is inserted next to By default the name of a window is the same as its index To determine the name and index of all active windows use the LAYout CATalog WINDow query lt Direction gt LEFT RIGHt ABOVe BELow Direction the new window is added relative to the existing window User Manual 1173 9370 02 05 157 R amp S FSW K10x LTE Downlink Remote Control lt WindowType gt Return values lt NewWindowName gt Example Usage Manual operation Working with Windows in the Display text value Type of result display evaluation method you want to add See the table below for available parameter values When adding a new window the command returns its name by default the same as its number as a result LAY ADD 1 LEFT MTAB Result 2 Adds a new window named 2 with a marker table to the left of window 1 Query only See Capture Buffer on page 13 See EVM vs Carrier on page 13 See EVM vs Symbol on page 14 See EVM vs RB on page 15 See Frequency Error vs Symbol on page 16 See EVM vs Subframe on page 16 See Power Spectrum on page 17 See Power vs Resource Block PDSCH on page 17 See Power vs Resource Block RS on page 18 See Channel Flatness on page 18 See Channel Group Delay on page 19 See Channel Flatness Difference on page 19 See Constellation Diagram on page 20 See CCDF on page 20 See Allocation Summary on page
56. if the 50 input impedance is transformed to a higher impedance using a matching pad of the RAZ type 25 in series to the input impedance of the instrument The power loss correction value in this case is 1 76 dB 10 log 750 500 Parameters Impedance Example Usage Manual operation 50 75 RST 500 INP IMP 75 SCPI confirmed See Impedance on page 67 User Manual 1173 9370 02 05 145 R amp S FSW K10x LTE Downlink Remote Control a NELLO X UM J Tt Remote Commands to Configure the Application INPut lt n gt EATT lt Attenuation gt This command defines the electronic attenuation level If the current reference level is not compatible with an attenuation that has been set manually the command also adjusts the reference level This command is available with option R amp S FSW B25 but not if R amp S FSW B17 is active Parameters lt Attenuation gt Attenuation level in dB Default unit dB Example INP EATT 10 Defines an attenuation level of 10 dB Manual operation See Attenuating the Signal on page 66 INPut lt n gt EATT AUTO lt State gt This command turns automatic selection of the electronic attenuation on and off If on electronic attenuation reduces the mechanical attenuation whenever possible This command is available with option R amp S FSW B25 but not if R amp S FSW B17 is active
57. is deactivated Any running sequential measure ments are stopped Further Sequencer commands INIT SEQ not available RST 0 Example SYST SEQ ON Activates the Sequencer INIT SEQ MODE SING Sets single Sequencer mode so each active measurement will be performed once INIT SEQ IMM Starts the sequential measurements SYST SEQ OFF 6 5 Remote Commands to Read Trace Data Using the 93 e Remote Commands to Read Measurement 105 6 5 1 Using the TRACe DATA Command This chapter contains information on the TRACe DATA command and a detailed descrip tion of the characteristics of that command The TRACe DATA command queries the trace data or results of the currently active measurement or result display The type number and structure of the return values are specific for each result display In case of results that have any kind of unit the command returns the results in the unit you have currently set for that result display Note also that return values for results that are available for both downlink and uplink may be different User Manual 1173 9370 02 05 93 R amp S FSW K10x LTE Downlink Remote Control i a a a an ee Remote Commands to Read Trace Data For several result displays the command also supports various SCPI parameters in
58. no additional options are installed only RF input is supported Parameters lt Source gt RF Radio Frequency RF INPUT connector DIQ Digital IQ data only available with optional Digital Baseband Inter face R amp S FSW B17 For details on I Q input see the R amp S FSW 1 0 Analyzer User Man ual AIQ Analog Baseband signal only available with optional Analog Baseband Interface R amp S FSW B71 For details on Analog Baseband input see the R amp S FSW I Q Ana lyzer User Manual RST RF User Manual 1173 9370 02 05 140 R amp S FSW K10x LTE Downlink Remote Control Se Remote Commands to Configure the Application Manual operation See Digital 1 0 Input State on page 61 See Analog Baseband Input State on page 63 Defining the Frequency e Snt Heic MON 141 CENT SRS TEP isis iia incite creo yn Ra deme ita eau Rae ee dana Hine es ege 141 SENSe FREOUusncy CEN Ter STEP EINK 141 SENS FREQ ency CENTer STEP LINK FACTO i 142 SENSE JPREQUBRnOYE OFF Set ican aa tie a Eiai 142 SENSe FREQuency CENTer lt Frequency gt This command sets the center frequency for RF measurements Parameters lt Frequency gt lt numeric value gt Range fmin to fmax RST 1 GHz Default unit Hz Example FREQ CENT 2GHZ Set the center frequency to 2 GHz M
59. of the code word in the allocation The second number is the total number of code words that the allocation includes Thus a table entry of 1 2 would mean that the row corresponds to code word 1 out of 2 code words in the allocation Modulation Selects the modulation scheme for the corresponding allocation The modulation scheme for the PDSCH is either QPSK 16QAM or 64QAM Enhanced Settings In the Enhanced Settings you can define the PDSCH start offset for the selected PDSCH allocation in a system that uses carrier aggregation Carrier Aggregation For cross scheduled UEs the PDSCH start offset for the secondary carrier is usually not defined for each subframe individually but is constant over several subframes In case the control channel region of the secondary component carrier is longer than the PDSCH start offset you have defined for the primary carrier PDSCH resource elements might be overwritten by the resource elements of the control channel Note that the bit stream result displays labels these resource element with a sign VRB Gap Turns the utilization of virtual resource blocks VRB on and off The standard defines two types of VRBs Localized VRBs and distributed VRBs While localized VRBs have a direct mapping to the PRBs distributed VRBs result in a better frequency diversity Three values of VRB gap are allowed 0 Localized VRBs are used 1 Distributed VRBs are used and the first gap is applied 2
60. page 148 Defining the Frequency Frequency settings define the frequency characteristics of the signal at the RF input Frequency Defining the Signal 222 kannten kk maestra E kt aes de 64 Defining the Signal Frequency For measurements with an RF input source you have to match the center frequency of the analyzer to the frequency of the signal The available frequency range depends on the hardware configuration of the analyzer you are using The frequency setting is available for the RF input source In addition to the frequency itself you can also define a frequency stepsize The fre quency stepsize defines the extent of a frequency change if you change it for example with the rotary knob Define the stepsize in two ways e Center EEUU RU E OT e A A tA LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLUULUAUAULISS User Manual 1173 9370 02 05 64 R amp S FSW K10x LTE Downlink Configuration Configuring Measurements One frequency step corresponds to the current center frequency e Manual Define a any stepsize you need Remote command Center frequency SENSe FREQuency CENTer on page 141 Frequency stepsize SENSe FREQuency CENTer STEP on page 141 Frequency offset SENSe FREQuency OFFSet on page 142 4 2 2 3 Defining Level Characteristics Amplitude settings define the expected level charact
61. results returned in RST PCT Example UNIT EVM PCT EVM results to be returned in Manual operation See EVM Unit on page 78 General Window Commands The following commands are required to configure general window layout independant of the application DISPIAV Em 156 BISPlayPWINDowsn 156 DISPlay FORMat lt Format gt This command determines which tab is displayed Parameters lt Format gt SPLit Displays the MultiView tab with an overview of all active channels SINGIe Displays the measurement channel that was previously focused RST SPL Example DISP FORM SING DISPlay WINDow lt n gt SIZE Size This command maximizes the size of the selected result display window temporarily To change the size of several windows on the screen permanently use the LAY SPL com mand see LAYout SPLitter on page 160 T User Manual 1173 9370 02 05 156 R amp S FSW K10x LTE Downlink Remote Control Working with Windows in the Display Parameters lt Size gt LARGe Maximizes the selected window to full screen Other windows are still active in the background SMALI Reduces the size of the selected window to its original size If more than one measurement window was displayed originally these are visible again RST SMALI Example DISP WIND2 LARG 6 10 Working with Windows in the Display The following commands are required to change the evaluation type and
62. returns 1 if no valid result has been detected yet Range 0 to 2 FETC PLC PLID Returns the current cell identity Query only See Configuring the Physical Layer Cell Identity on page 44 MMEMory LOAD TMOD DL lt TestModel gt This command loads an EUTRA test model E TM The test models are in accordance with 3GPP TS 36 141 User Manual 1173 9370 02 05 121 R amp S FSW K10x LTE Downlink Remote Control Remote Commands to Configure the Application Setting parameters lt TestModel gt 1 1 10MHz EUTRA Test Model 1 1 1 1 1 2 10MHz EUTRA Test Model 1 2 1 2 2 10MHz EUTRA Test Model 2 E TM2 1 10MHz EUTRA Test Model 3 1 E TM3 1 E TM3 2 10MHz EUTRA Test Model 3 2 E TM3 2 E TM3 3 10MHz EUTRA Test Model 3 3 E TM3 3 Example MMEM LOAD TMOD DL E TM2 10MHz Selects test model 2 for a 10 MHz bandwidth Usage Setting only Manual operation See Using Test Models on page 41 MIMO Setup GONFigure EL TEEDISMIMOSASELeCIOn een 122 GONFigureEETEEDESMIMOSCONF ID 53222421 35 poen enu Ron aea E eaae e thin tin 122 CONFigure L TE DL MIMO ASELection Antenna This command selects the antenna for measurements with MIMO setups Parameters Antenna ANT1 ANT2 ANT3 ANT4 Select a single antenna to be analyzed RST ANT1 Example CONF DL MIMO ASEL ANT3
63. signal is amplified by about 15 dB 30 dB The RF input signal is amplified by about 30 dB Remote command INPut GAIN STATe on page 145 INPut GAIN VALue on page 144 Input Coupling The RF input of the R amp S FSW can be coupled by alternating current AC or direct current DC This function is not available for input from the Digital Baseband Interface R amp S FSW B17 or from the Analog Baseband Interface R amp S FSW B71 AC coupling blocks any DC voltage from the input signal This is the default setting to prevent damage to the instrument Very low frequencies in the input signal may be dis torted However some specifications require DC coupling In this case you must protect the instrument from damaging DC input voltages manually For details refer to the data sheet Remote command INPut COUPling on page 144 Impedance The reference impedance for the measured levels of the R amp S FSW can be set to 50 O or 75 75 should be selected if the 50 input impedance is transformed to a higher impedance using a 75 adapter of the RAZ type 25 in series to the input impedance of the instrument The correction value in this case is 1 76 dB 10 log 750 500 This value also affects the unit conversion This function is not available for input from the Digital Baseband Interface R amp S FSW B17 or from the Analog Baseband Interface R amp S FSW B71 For analog baseband input an impedance of 50 is alw
64. the Error Vector Magnitude EVM of the OFDM symbols You can use it as a debugging technique to identify any symbols whose EVM is too high The results are based on an average EVM that is calculated over all subcarriers that are part of a particular OFDM symbol This average OFDM symbol EVM is determined for all OFDM symbols in each analyzed subframe If you analyze all subframes the result display contains three traces e Average EVM This trace shows the OFDM symbol EVM averaged over all subframes e Minimum EVM User Manual 1173 9370 02 05 14 R amp S FSW K10x LTE Downlink Measurements and Result Displays Measurements This trace shows the lowest average OFDM symbol EVM that has been found over the analyzed subframes e Maximum EVM This trace shows the highest average OFDM symbol EVM that has been found over the analyzed subframes If you select and analyze one subframe only the result display contains one trace that shows the OFDM symbol EVM for that subframe only Average minimum and maximum values in that case are the same For more information see Subframe Selection on page 76 The x axis represents the OFDM symbols with each symbol represented by a dot on the line The number of displayed symbols depends on the Subframe Selection and the length of the cyclic prefix Any missing connections from one dot to another mean that the R amp S FSW could not determine the EVM for that symbol In case of TDD signals t
65. the distance to the limit line Return values LimitCheck Returns two values one for the upper and one for the lower adja cent channel 1 Limit check has passed 0 Limit check has failed Example CALC LIM ACP ACH RES ALL Queries the results of the adjacent channel limit check Usage Query only CALCulate lt n gt LIMit lt k gt ACPower ALTernate RESult Result This command queries the limit check results for the alternate channels during ACLR measurements I User Manual 1173 9370 02 05 105 R amp S FSW K10x LTE Downlink Remote Control SSS lt lt Remote Commands to Read Trace Data Query parameters lt Result gt ALL Queries the overall limit check results REL Queries the channel power limit check results ABS Queries the distance to the limit line Return values lt LimitCheck gt Returns two values one for the upper and one for the lower alter nate channel 1 Limit check has passed 0 Limit check has failed Example CALC LIM ACP ALT RES ALL Queries the results of the alternate channel limit check Usage Query only CALCulate lt n gt MARKer lt m gt FUNCtion POWer RESult CURRent This command queries the current results of the ACLR measurement or the total signal power level of the SEM measurement To get a valid result you have to perform a complete measurement with synchronization to the end of t
66. the inphase and quadrature phase results and is an indicator of the quality of the modulation of the signal In the default state the result display evaluates the full range of the measured input data You can filter the results by changing the evaluation range dialog box The ideal points for the selected modulation scheme are displayed for reference purpo ses 4 Constellation Diagram Points Measured 117796 The constellation diagram also contains information about the current evaluation range In addition it shows the number of points that are displayed in the diagram Remote command LAY ADD 1 LEFT CONS TRACe DATA CCDF Starts the Complementary Cumulative Distribution Function CCDF result display This result display shows the probability of an amplitude exceeding the mean power For the measurement the complete capture buffer is used The x axis represents the power relative to the measured mean power On the y axis the probability is plotted in 96 EEUU RA E e 1 1 1 1 LLLLLLLL A LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLAIXMAXA User Manual 1173 9370 02 05 20 R amp S FSW K10x LTE Downlink Measurements and Result Displays Measurements 7 ael Remote command LAY ADD 1 LEFT CCDF TRACe DATA Allocation Summary Starts the Allocation Summary result display This result display shows the results of the measured allocations in tabular form 1 Allocation Summary Sub
67. the result of a query are indicated as Return values e Conformity Commands that are taken from the SCPI standard are indicated as SCPI con firmed All commands used by the R amp S FSW follow the SCPI syntax rules e Asynchronous commands A command which does not automatically finish executing before the next command starts executing overlapping command is indicated as an Asynchronous com mand e Reset values RST e A AALLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLUL 2 User Manual 1173 9370 02 05 81 R amp S FSW K10x LTE Downlink Remote Control mue A X YJ n Tm d ST 6 2 2 6 2 3 6 2 4 Introduction Default parameter values that are used directly after resetting the instrument RST command are indicated as RST values if available e Manual operation If the result of a remote command can also be achieved in manual operation a link to the description is inserted Long and Short Form The keywords have a long and a short form You can use either the long or the short form but no other abbreviations of the keywords The short form is emphasized in upper case letters Note however that this emphasis only serves the purpose to distinguish the short from the long form in the manual For the instrument the case does not matter Example SENSe FREQuency CENTer is
68. the same as SENS FREQ CENT Numeric Suffixes Some keywords have a numeric suffix if the command can be applied to multiple instan ces of an object In that case the suffix selects a particular instance e g a measurement window Numeric suffixes are indicated by angular brackets n next to the keyword If you don t quote a suffix for keywords that support one a 1 is assumed Example DISPlay WINDow lt 1 4 gt ZOOM STATe enables the zoom in a particular mea surement window selected by the suffix at WINDow DISPlay WINDow4 ZOOM STATe ON refers to window 4 Optional Keywords Some keywords are optional and are only part of the syntax because of SCPI compliance You can include them in the header or not Note that if an optional keyword has a numeric suffix and you need to use the suffix you have to include the optional keyword Otherwise the suffix of the missing keyword is assumed to be the value 1 Optional keywords are emphasized with square brackets EET OTI 1 1LLLLALLLULS I User Manual 1173 9370 02 05 82 R amp S FSW K10x LTE Downlink Remote Control U ac ve aa 1 Introduction Example Without a numeric suffix in the optional keyword SENSe FREQuency CENTer is the same as FREQuency CENTer With a numeric suffix in the optional keyword DISPlay WINDow lt 1 4 gt ZOOM
69. the same as in the Spectrum appli cation Please refer to the User Manual of the R amp S FSW for a detailed description on how to configure ACLR and SEM measurements e ACLR Signal Description Henna 74 SEM Descnp 75 ACLR Signal Description The signal description for ACLR measurements contains settings to describe general physical characteristics of the signal you are measuring Press the MEAS CONFIG key Press the Signal Description softkey The application opens the Signal Description dialog box For more information on the LTE Mode Test Model and Channel Bandwidth see Select ing the LTE Mode on page 41 Using Test Models on page 41 and Channel Band width Number of Resource Blocks on page 42 Assumed Adjacent Channel Carrier Selects the assumed adjacent channel carrier for the ACLR measurement The supported types are EUTRA of same bandwidth 1 28 Mcps UTRA 3 84 Mcps and 7 68 Mcps UTRA Note that not all combinations of LTE Channel Bandwidth settings and Assumed Adj Channel Carrier settings are defined in the 3GPP standard Remote command SENSe POWer ACHannel AACHannel on page 152 User Manual 1173 9370 02 05 74 R amp S FSW K10x LTE Downlink Configuration SSS 8 Configuring Frequency Sweep Measurements 4 3 2 SEM Signal Description The signal description for ACLR measurement
70. 1 4 3 2 5 1 5 1 1 5 1 2 Contents Welcome to the LTE Measurement Application 7 Starting the LTE Measurement 7 Understanding the Display Information eere nnn 8 Measurements and Result 11111111 10 I Q Measuremients iini tei 12 Time Alignment Measurements eese 26 Frequency Sweep 2 27 Measurement BasICS ceeociceoro iai tois tasapen pen IR EnPRRR MEER 31 Symbols and Varliables crie cce crx aab Pc 31 SUIIMIS 32 LTE Downlink Analysis Measurement Application 32 Synchronization erri o snide nudes ie 32 Channel Estimation and 34 ANALYSIS EE 34 Performing Time Alignment Measurements eene nnn 35 np Me 38 Configuration 38 Configuring nennen nennen nnn nnne nnn 40 Defining the Signal Characteristics 40 Frontend
71. 26 CALCulate lt n gt MARKer lt m gt Y This command queries the position of a marker on the y axis If necessary the command activates the marker first To get a valid result you have to perform a complete measurement with synchronization to the end of the measurement before reading out the result This is only possible for single sweeps See also INIT Tiate CONTinuous on page 90 Return values lt Result gt Result at the marker position Example INIT CONT OFF Switches to single measurement mode CALC MARK2 ON Switches marker 2 INIT WAI Starts a measurement and waits for the end CALC MARK2 Y Outputs the measured value of marker 2 Usage Query only Manual operation See Marker Table on page 26 Remote Commands to Configure the Application General Configuration The following remote control command control general configration of the application The remote control commands to select the result displays for measurements are described in chapter 6 10 Working with Windows in the Display on page 157 CONFigure C TEEMEAS uremient o rennen hne rrr ehe nennt ek in E 116 SYS Tem PRESepCHANnBSIEEXEQCuUlB aiii Ey 117 CONFigure LTE MEASurement Measurement This command selects the measurement _ __ _ _ __ RA E AR A A LLLLLLLLLLLLLLLLLLLLLLLLLLAALLLLLLLLALALAAALULLUTLLI M X User Manual 1173 9370 02 05 116 R amp S FSW
72. 55 5 1 4 Markers Markers are available for most of the measurement result displays and for the fre quency sweep measurements The functionality setting and positioning is the same as in Spectrum mode For a comprehensive description of the marker functionality see the corresponding chap ters in the documentation of the R amp S FSW 5 2 Analyzing Frequency Sweep Measurements The LTE application supports the same functionality to analyze the results of frequency sweep measurements Spectrum Emission mask and Adjacent Channel Leakage Ratio as the R amp S FSW base unit does for those measurements Please refer to the User Manual of the R amp S FSW for a detailed description on how to analyze ACLR and SEM measurements User Manual 1173 9370 02 05 79 R amp S FSW K10x LTE Downlink Remote Control Overview of Remote Command Suffixes 6 Remote Control The following remote control commands are required to configure and perform noise figure measurements in a remote environment The R amp S FSW must already be set up for remote operation in a network as described in the base unit manual Universal functionality Note that basic tasks that are also performed in the base unit in the same way are not described here For a description of such tasks see the R amp S FSW User Manual In particular this includes e Managing Settings and Results i e storing and loading settings and result data e Basic instrument configura
73. 6 2 6 2 Introduction Values exceeding the resolution of the instrument are rounded up or down If the number you have entered is not supported e g in case of discrete steps the command returns an error Instead of a number you can also set numeric values with a text parameter in special cases e MIN MAX Defines the minimum or maximum numeric value that is supported e DEF Defines the default value e UP DOWN Increases or decreases the numeric value by one step The step size depends on the setting In some cases you can customize the step size with a corresponding command Querying numeric values When you query numeric values the system returns a number In case of physical quan tities it applies the basic unit e g Hz in case of frequencies The number of digits after the decimal point depends on the type of numeric value Example Setting SENSe FREQuency CENTer 1GHZ Query SENSe FREQuency CENTer would return 1 amp 9 In some cases numeric values may be returned as text INF NINF Infinity or negative infinity Represents the numeric values 9 9E37 or 9 9E37 e NAN Not a number Represents the numeric value 9 91E37 NAN is returned in case of errors Boolean Boolean parameters represent two states The ON state logically true is represented by ON or a numeric value 1 The OFF state logically untrue is represented by OFF or the numeric value 0 Querying bool
74. CCH Format Defines the format of the PDCCH physical downlink control channel Note that PDCCH format 1 is not defined in the standard This format corresponds to the transmission of one PDCCH on all available resource element groups As a special case for this PDCCH format the center of the constellation diagram is treated as a valid constellation point Remote command CONFigure LTE DL PDCCh FORMat on page 132 Number of PDCCHs Sets the number of physical downlink control channels 9QQ B i User Manual 1173 9370 02 05 59 R amp S FSW K10x LTE Downlink Configuration O Configuring Measurements This parameter is available if the PDCCH format is 1 Remote command CONFigure LTE DL PDCCh NOPD on page 132 PDCCH Rel Power Defines the power of the PDCCH relative to the reference signal Remote command CONFigure LTE DL PDCCh POWer on page 133 Configuring Shared Channels The shared channel characteristics are part of the Advanced Settings tab of the Signal Description dialog box PDSCEUPOWOPBRASUD ise ed ete terr eee tete tt rd re tete ride eene Ede dette ge 60 PDSCH Power Ratio Selects the PDSCH P B parameter that defines the cell specific ratio of rho B to rho A according to 3GPP TS 36 213 table 5 2 1 The table below shows the resulting value
75. Distributed VRBs are used and the second gap is applied for channel band widths gt 50 resource blocks The second gap has a smaller size compared to the first gap N User Manual 1173 9370 02 05 48 R amp S FSW K10x LTE Downlink Configuration EEEEEEEE E EEEEE gt gt gt EeyeyEeeye y E LLL L _ Sass Configuring Measurements If on the VRB Gap determines the distribution and mapping of the VRB pairs to the physical resource blocks PRB pairs The distribution of the VRBs is performed in a way that consecutive VRBs are spread over the frequencies and are not mapped to PRBs whose frequencies are next to each other Each VRB pair is split into two parts which results in a frequency gap between the two VRB parts This method corresponds to frequency hopping on a slot basis The information whether localized or distributed VRBs are applied is carried in the PDCCH The DCI formats 1A 1B and 1D provide a special 1 bit flag for this purpose Localized Distributed VRB Assignment Another bit in the DCI formats controls whether the first or second bit is applied e Number of RB Defines the number of resource blocks the allocation covers The number of resource blocks defines the size or bandwidth of the allocation If you allocate too many resource blocks compared to the bandwidth you have set the R amp S FSW will s
76. E DL PLC PLID On page 120 FETCh PLC PLID on page 121 Configuring MIMO Setups The MIMO Configuration contains settings to configure MIMO test setups MIMO Setup DUT MIMO Configura TX Antenna Selection MIMO CORTOS OR usce Ene etl etel etc ed 45 MIMO Configuration Selects the antenna configuration and test conditions for a MIMO system The MIMO configuration selects the number of transmit antennas in the system 1 2 and 4 antenna configurations are possible In setups with multiple antennas antenna selection defines the antenna you d like to test You can select the antenna s to test manually Note that the selected antenna is also the reference antenna for Time Alignment measurements Antenna 1 Tests antenna 1 only Antenna 2 Tests antenna 2 only Antenna 3 Tests antenna 3 only Antenna 4 Tests antenna 4 only Remote command MIMO configuration CONFigure LTE DL MIMO CONFig on page 122 Antenna selection CONFigure LTE DL MIMO ASELection on page 122 SSSR User Manual 1173 9370 02 05 45 R amp S FSW K10x LTE Downlink Configuration Configuring Measurements 4 2 1 3 PDSCH Settings The Physical Layer Shared Channel PDSCH carries user data broadcast system infor mation and paging messages It is always present in a downlink transmission PDSCHSettings 10 Code N_RNTI Word o 1 1 64QAM 1 1 1 1 64QAM 1 2 1 1 64QAM
77. E Downlink Measurements and Result Displays Measurements A frequent question when analyzing multi standard radio signals is how each data chan nel is correlated in time to others Thus an analysis line has been introduced in firmware version 1 60 The analysis line is a common time marker for all MSRA applications It can be positioned in any MSRA application or the MSRA Master and is then adjusted in all other applications Thus you can easily analyze the results at a specific time in the mea surement in all applications and determine correlations If the marked point in time is contained in the analysis interval of the application the line is indicated in all time based result displays such as time symbol slot or bit diagrams By default the analysis line is displayed however it can be hidden from view manually In all result displays the AL label in the window title bar indicates whether or not the analysis line lies within the analysis interval or not e orange AL the line lies within the interval e white AL the line lies within the interval but is not displayed hidden e the line lies outside the interval For details on the MSRA operating mode see the R amp S FSW MSRA documentation e PO Measureliefits nee piacere A aM ee ERREUR ERE 12 e Time Alignment Measurements eiiis 44 eere tacere e RARE inscr 26 e Frequency Sweep
78. Example INST LIST Result for 3 measurement channels ADEM Analog Demod IQ IQ Analyzer SANALYZER Spectrum Usage Query only Table 6 1 Available measurement channel types and default channel names Application lt ChannelType gt Parameter Default Channel Spectrum SANALYZER Spectrum Analyzer IQ IQ Analyzer Pulse R amp S FSW K6 PULSE Pulse Analog Demodulation ADEM Analog Demod R amp S FSW K7 GSM R amp S FSW K10 GSM GSM Multi Carrier Group Delay MCGD MC Group Delay R amp S FSW K17 Noise R amp S FSW K30 NOISE Noise Note the default channel name is also listed in the table If the specified name for a new channel already exists the default name extended by a sequential number is used for the new channel User Manual 1173 9370 02 05 87 R amp S FSW K10x LTE Downlink Remote Control pec a aay Remote Commands to Select the LTE Application Application lt ChannelType gt Parameter Default Channel Phase Noise R amp S FSW PNOISE Phase Noise K40 VSA R amp S FSW K70 DDEM VSA 3GPP FDD BTS BWCD 3G FDD BTS R amp S FSW K72 3GPP FDD UE R amp S FSW MWCD 3G FDD UE K73 TD SCDMA BTS BTDS TD SCDMA BTS R amp S FSW K76 TD SCDMA UE R amp S FSW MTDS TD SCDMA UE K77 cdma2000 BTS R amp S FSW BC2K CDMA2000 BTS K82 cdma2000 MS R amp S FSW MC2K CDMA2000 MS K83 1
79. GGR NOPD i5 tiere orare ee eter Ere e PARURE 132 CONFig re ETETDLEEPDOCh POW aer iiid rien eee scd a becas tenue te Pet Pee 133 CONFigureEETET DE PDSQCHh PB iiiter orna tette er c tee esa be re eed 135 CONFigureE ETE DE PHICh DURatIOD irai esami tuae ree dra eere de ir eee ee ea 133 CONFigure LTE DL PHICH MITM cccccceceeeeeeeeeeeeeeeeeeeeseaeeeeeaeeeeseaeeeesaeeeeseaeeeeseaeeeeseaeeeeseaeeseseeeeeseneeeees 133 CONFigure LTET DE PHICh NGParameter ettet tnnt nire 133 CONFigure ETET DE PEICh NOGBOUpS ioo ioter ren cet ret eec i stc tuna 134 CONFigure L TE DL PHICh POWer CONFiguref TE CONFigure ETE DE PEC GIDGEOUD 120 CONFigure ETE DE PEG PED iiie erae tesa coated ac REMO 120 CONFigureEETETEDEPRSS BW teteettn ine Deere er enero rere ved rp E Ur ne Cede ee NN SER RR 128 _ 9 128 7 01 5 3 e erret FEE EO MAR XE 128 CONFigure ETETDE PRSS POWOGr icri e epitope ere sadn dapes ect 128 CONFigure LTE DE PRSS S TATe icri eto adea ret
80. INPut DIQ RANGe UPPer UNIT 2 1 nice nen asioina ten gadis RE dE 138 138 INPut DIQ SRATe AUTO sse 138 INPut FIETer HPASS STATS iret tete erred teat 139 pec 139 INPut GAIN STATe NPU GAIN WAL U6 HL INPut IMPedalioe x 5 1 m cet et fei Ag Ced dict Ses he eee As ee ee INPutIQ BAEanced STATS rrt ipe tnter aaa aaa 139 c 140 INPUESEEGGE ML ML MEM DUE AES 140 eee User Manual 1173 9370 02 05 166 R amp S FSW K10x LTE Downlink List of Commands 146 lt gt ier e n E P EE rr E ERR FEE ERES 146 INPutsn EATT STALTO iere hende pacis return n du Ec ausa dp ER DE DR aie 146 INSTrument CREate DUPLic ate oti ttd p vince e de ld d e ed rp d 86 5 86 INSTrument CREate rn tt petia nein ete e
81. K10x LTE Downlink Configuration Configuring Measurements De ded Bits On E Use Multicarrier Filter BS N anam 11 BP OFF nels Compensate Crosstalk OFF EVM 3GPP Definition 5 Referensi Auto Detect LX PORCH as M lticarner 72 Compensate Crosstalk etie rs t teta 72 scrambling of Coded BIES edere 72 Decode All Control Chartiels 2 2 epa enc ders na ec dua aueucuedeanwar 73 EVM Cale laton Methad ecce e reete use etit Ee enero 73 PDSCH Reference Data eei entere Ee estet reni 73 Multicarrier Filter Turns the suppression of interference of neighboring carriers for tests on multiradio base stations on and off e g LTE WCDMA GSM etc Remote command SENSe LTE DL DEMod MCFilter on page 149 Compensate Crosstalk Specifies if crosstalk produced by the device under test or over the air measurements will be compensated or not The crosstalk compensation must be activated for Time Alignment Error measure ments For more information see chapter 3 4 Performing Time Alignment Measure ments on page 35 Remote command CONFigure LTE DL MIMO CROSstalk on page 149 Scrambling of Coded Bits Turns
82. K10x LTE Downlink Remote Control 6 7 2 6 7 2 1 Remote Commands to Configure the Application Parameters lt Measurement gt ACLR Selects the Adjacent Channel Leakage Ratio measurement ESPectrum Selects the Spectrum Emission Mask measurement EVM Selects measurements with the EVM display configuration TAERor Selects the Time Alignment Error measurement Example CONF MEAS ACLR Selects the ACLR measurement Manual operation See ACLR on page 27 See Spectrum Mask on page 29 SYSTem PRESet CHANnel EXECute This command restores the default instrument settings in the current channel Use INST SEL to select the channel Example INST Spectrum2 Selects the channel for Spectrum2 SYST PRES CHAN EXEC Restores the factory default settings to the Spectrum2 channel Usage Event Manual operation See Preset Channel on page 39 Configuring I Q Measurements Signal E 117 linput 2202 ce eek er nere neue Pe a A aia 135 Sen 93 8 U0 MM 147 p cipere nue em 149 Parameter EStmaone ss sciscos shed HET 150 Signal Description Signal Chiaractertelis ee ol A eee 118 MINO SUP mE 122 PDSCH TMS ERR 123 Synehranization SIgnal 2 ern ona e prd 126 R elerenco SIgrml uuc ener nde endo aie Lr n e LA
83. MAXimum FETCh SUMMary EVM DSSF MINimum FETCh SUMMary EVM DSSF AVERage This command queries the EVM of all resource elements of the PDSCH with 640 modulation Return values lt EVM gt lt numeric value gt EVM in or dB depending on the unit you have set Example FETC SUMM EVM DSSF Returns the PDSCH 64QAM EVM Usage Query only Manual operation See Result Summary on page 24 FETCh TAERror ANTenna MAXimum FETCh TAERror ANTenna MINimum FETCh TAERror ANTenna lt antenna gt AVERage This command queries the time alignment error Suffix lt antenna gt 2 4 Number of the antenna you want to compare to antenna 1 Return values Time Alignment Minimum maximum or average time alignment error depending Error on the last command syntax element Default unit s Example FETC SUMM TAER Returns the average time alignment error in s Usage Query only Manual operation See Time Alignment Error on page 27 Result for Selection FETChSUMMary C RESIFAVERage eoi eerie ne Rb 110 5 0 110 FEFCSSUMMary EVMEAEEEMINITUET addere ba cete racc rd eant to cana NAE A aaa eae 110 FETCh SUMMary EVMEALELIEAVERage 2 2 coiere tete teuer er cues 110 FETCh SUMMary EVM PCHannel MAXimum cesses earns renes 111 FEFCh SUMMary EVM POHannel MINIMI 12m dcr repa cerae e
84. N __ Subcarrier compensation selection buffer n 1 mg synchronisation estimation boarse Fyooarse reference path 2 e line measurement path Fine timing signals at time offsets AC AT and AT Coarse channel 29 est RS based compensation SFO optional punc ur r Phase sync Phase sync ine channel est Ik pilots RS and data symbols res CFO tracking Customized x Customized compensation equalizer Fig 3 1 Block diagram for the LTE DL measurement application After the time to frequency transformation by an FFT of length the phase synchro nization block is used to estimate the following e the relative sampling frequency offset c SFO the residual carrier frequency offset CFO e the common phase error CPE According to 3GPP TS 25 913 and 3GPP TR 25 892 the uncompensated samples can be expressed as iD j2m Ns Ngpep G kdl j2z Ng N ppp N 274 Rp A el 5 el s Ares NQ CPE SFO res CFO 3 1 where e the data symbol is on subcarrier k at OFDM symbol e the channel transfer function is h e the number of Nyquist samples is N within the symbol time T e the useful symbol time e independent and Gaussian distributed noise sample is Within one OFDM symbol both the CPE and the residual CFO cau
85. OM nni ner b nr 77 Softkeys DiglConf Preamp Specifics for Cohfigu tatiori ore rt tdi Spectr m mask ne nee eere ds Standard Selection Subframe Configuration Table Suibame PY Suffixes Remote commands 82 Swap Q sities 69 emer 64 TDD UL DL Allocations see 43 DH seized t 71 U Used Allocations 47 Windows Adding remote acheter teet ea 157 Closing remote eee 160 CONTIQUIING o secedere egit pericu 40 Layout remote 160 Maximizing remote 156 Querying remote 159 Replacing remote Splitting remote 156 Types remote inherentes 157 Window title bar information 9 Y YIG preselector Activating Deactivating eee 61 Activating Deactivating remote 139
86. R amp S9FSW K10x LTE Downlin Downlink Measurement Application User Manual 1 Imbalance dB drature Error OSTP dBm Power dBm Crest Factor dB Sync Found 1173 9370 02 05 ROHDE amp SCHWARZ Test amp Measurement User Manual This manual applies to the following R amp S9FSW models with firmware version 1 70 and higher e R amp S FSW8 1312 8000K08 e R amp S FSW13 1312 8000K13 e R amp S FSW26 1312 8000 26 R amp S9FSWA3 1312 8000K43 e R amp S FSW50 1312 8000K50 2 Dae The following firmware options are described R amp S FSW K100 LTE FDD DL order no 1313 1545 02 R amp S FSW K102 LTE MIMO DL order no 1313 1568 02 R amp S FSW K104 LTE TDD DL order no 1313 1574 02 2013 Rohde amp Schwarz GmbH amp Co KG M hldorfstr 15 81671 M nchen Germany Phone 49 89 41 29 0 Fax 49 89 41 29 12 164 E mail info rohde schwarz com Internet www rohde schwarz com Printed in Germany Subject to change Data without tolerance limits is not binding R amp S is a registered trademark of Rohde amp Schwarz GmbH amp Co KG Trade names are trademarks of the owners The following abbreviations are used throughout this manual R amp S9FSW is abbreviated as R amp S FSW R amp S FSW K10x LTE Downlink Contents 1 1 1 2 2 1 2 2 2 3 3 1 3 2 3 3 3 3 1 3 3 2 3 3 3 3 4 4 1 4 2 4 2 1 4 2 2 4 2 3 4 24 4 2 5 4 3 4 3
87. Remote Commands to Configure the Application INPut DIQ RANGe UPPer Level Defines or queries the Full Scale Level i e the level that corresponds to an sample with the magnitude 1 This command is only available if the optional Digital Baseband Interface R amp S FSW B17 is installed Parameters Level numeric value Range to 7 071 V RST 1V Manual operation See Full Scale Level on page 62 INPut DIQ RANGe UPPer UNIT Unit Defines the unit of the full scale level see Full Scale Level on page 62 The availability of units depends on the measurement application you are using This command is only available if the optional Digital Baseband Interface R amp S FSW B17 is installed Parameters Level VOLT DBM DBPW WATT DBMV DBUV DBUA AMPere RST Volt Manual operation See Full Scale Level on page 62 INPut DIQ SRATe lt SampleRate gt This command specifies or queries the sample rate of the input signal from the Digital Baseband Interface R amp S FSW B17 see Input Sample Rate on page 62 Parameters lt SampleRate gt Range 1 Hz to 10 GHz RST 32 MHz Example INP DIQ SRAT 200 MHz Manual operation See Input Sample Rate on page 62 INPut DIQ SRATe AUTO lt State gt If enabled the sample rate of the digital input signal is set automatically by the con nected device This command is only available if the optional Digital Baseband Interf
88. S FSW with option R amp S FSW B25 it also provides electronic attenuation Note that the frequency range may not exceed the specifi cation of the electronic attenuator for it to work For both methods the application provides automatic detection of the ideal attenu ation level Alternatively you can define the attenuation level manually The range is from 0 dB to 79 dB RF attenuation or 30 dB electronic attenuation in 1 dB steps For more information on attenuating the signal see the manual of the R amp S FSW The application shows the attenuation level mechanical and electronic in the channel bar Att 10 dB Remote command RF attenuation NPut ATTenuation on page 143 NPut ATTenuation AUTO on page 144 H H Electronic attenuation INPut lt n gt EATT STATe on page 146 INPut lt n gt EATT AUTO on page 146 INPut lt n gt EATT on page 146 User Manual 1173 9370 02 05 66 R amp S FSW K10x LTE Downlink Configuration eee es ee Configuring Measurements Preamplifier option B24 If option R amp S FSW B24 is installed a preamplifier can be activated for the RF input signal For R amp S FSW 26 models the input signal is amplified by 30 dB if the preamplifier is activated For R amp S FSW 8 or 13 models the following settings are available You can use a preamplifier to analyze signals from DUTs with low input power Off Deactivates the preamplifier 15 dB The RF input
89. SCH allocation Parameters lt PSOFfset gt lt numeric value gt Number between 0 and 4 COMM Common PDSCH start offset Example CONF DL SUBF2 ALL2 PSOF 0 Defines a PDSCH start offset of 0 for the 2nd allocation in the 2nd subframe Manual operation See Configuring PDSCH Allocations on page 48 CONFigure LTE DL SUBFrame lt subframe gt ALLoc lt allocation gt RBCount lt ResourceBlocks gt This command selects the number of resource blocks of an allocation in a downlink sub frame Parameters lt ResourceBlocks gt lt value RST 6 Example CONF DL SUBF2 ALL5 RBC 25 Defines 25 resource block for allocation 5 in subframe 2 Manual operation See Configuring PDSCH Allocations on page 48 CONFigure LTE DL SUBFrame lt subframe gt ALLoc lt allocation gt RBOFfset lt Offset gt This command defines the resource block offset of an allocation in a downlink subframe Parameters lt Offset gt lt numeric value gt RST 0 Example CONF DL SUBF2 ALL5 RBOF 3 Defines a resource block offset of 3 for allocation 5 in subframe 2 Manual operation See Configuring PDSCH Allocations on page 48 CONFigure LTE DL SUBFrame lt subframe gt ALLoc lt allocation gt UEID ID This command defines the ID or N RNTI Parameters ID ID of the user equipment a User Manual 1173 9370 02 05 125 R amp S FSW K10x LTE Downlink Remote Control b _ _ Ss Rem
90. SENSe SWEep TIME on page 148 Overall Frame Count Turns the manual selection of the number of frames to capture and analyze on and off If the overall frame count is active you can define a particular number of frames to capture and analyze The measurement runs until all required frames have been analyzed even if it takes more than one sweep The results are an average of the captured frames If the overall frame count is inactive the R amp S FSW analyzes all complete LTE frames currently in the capture buffer ee User Manual 1173 9370 02 05 68 R amp S FSW K10x LTE Downlink Configuration nn nn Qnm Configuring Measurements The application shows the current frame count in the channel bar Frame Count 1 of 1 1 m Remote command SENSe LTE FRAMe COUNt STATe on page 147 Auto According to Standard Turns automatic selection of the number of frames to capture and analyze on and off If active the R amp S FSW evaluates the number of frames as defined for EVM tests in the LTE standard If inactive you can set the number of frames you want to analyze This parameter is not available if the overall frame count is inactive Remote command SENSe LTE FRAMe COUNt AUTO on page 148 Number of Frames to Analyze Sets the number of frames that you want to capture and analyze If the number of frames you have set last longer than a single sweep the
91. STATe DISPlay ZOOM STATe ON enables the zoom in window 1 no suffix DISPlay WINDow4 ZOOM STATe ON enables the zoom in window 4 6 2 5 Alternative Keywords A vertical stroke indicates alternatives for a specific keyword You can use both keywords to the same effect Example SENSe BANDwidth BWIDth RESolution In the short form without optional Keywords BAND 1MHZ would have the same effect as BWID 1MHZ 6 2 6 SCPI Parameters Many commands feature one or more parameters If a command supports more than one parameter these are separated by a comma Example LAYout ADD WINDow Spectrum LEFT MTABle Parameters may have different forms of values e Numeric Values eec ne t ree En 83 84 e Gharacter Data creed eceievasetve xta a apa euin a veta sa en eeu 85 Character SUID 85 oA CICATRICES 85 6 2 6 1 Numeric Values Numeric values can be entered in any form i e with sign decimal point or exponent In case of physical quantities you can also add the unit If the unit is missing the command uses the basic unit Example with unit SENSe FREQuency CENTer 1GHZ without unit SENSe FREQuency CENTer 1 9 would also set a frequency of 1 GHz User Manual 1173 9370 02 05 83 R amp S FSW K10x LTE Downlink Remote Control mue E E
92. Selects antenna 3 to be analyzed Manual operation See MIMO Configuration on page 45 CONFigure L TE DL MIMO CONFig lt NofAntennas gt This command sets the number of antennas in the MIMO setup N User Manual 1173 9370 02 05 122 R amp S FSW K10x LTE Downlink Remote Control Remote Commands to Configure the Application Parameters lt NofAntennas gt TX1 Use one Tx antenna TX2 Use two Tx antennas Use four Tx antennas RST TX1 Example CONF DL MIMO CONF TX2 TX configuration with two antennas is selected Manual operation See MIMO Configuration on page 45 PDSCH Settings 5 123 5 _ 124 CONFigure DL CSUBNAME S aet YE ERR be 124 CONFigure L 0 lt gt 124 CONFigure L TE DL SUBFrame ssubframe ALLoc allocation POWer 124 CONFigure L TE DL SUBFrame ssubframe ALLoc allocation2 PSOFfset 125 CONFigure L TE DL SUBFrame ssubframe ALLoc allocation RBCount 125 CONFigure L TE DL SUBFrame ssubframe ALLoc allocation RBOFfset 125 0 0 lt
93. Symb0 Carrier1 gt lt Q SFO Symb0 Carrier1 gt lt I SFO SymbO Carrier n gt lt Q SFO Symb0 Carrier n gt lt I SFO Symb1 Carrier1 gt Q SFO Symb1 Carrier1 lt I SFO Symb1 Carrier n gt lt Q SFO Symb1 Carrier n gt lt I SFO Symb n Carrier1 gt lt Q SFO Symb n Carrier1 gt lt I SFO Symb n Carrier n gt lt Q SF0 Symb n Carrier n gt lt I SF1 Symb0 Carrier1 gt Q SF 1 SymbO Carrier1 lt I SF1 Symb0 Carrier n gt Q SF1 Symb0 Carrier n gt lt I SF1 Symb1 Carrier1 gt lt Q SF1 Symb1 Carrier1 gt lt I SF1 Symb1 Carrier n gt O SF1 Symb1 Carrier n gt lt I SF n Symb n Carrier1 gt lt Q SF n Symb n Carrier1 gt lt I SF n Symb n Carrier n gt lt 5 Symb n Carrier n gt With SF subframe and Symb symbol of that subframe The and values have no unit The number of return values depends on the constellation selection By default it returns all resource elements including the DC carrier The following parameters are supported e TRACE1 Returns all constellation points included in the selection 6 5 1 11 EVM vs Carrier For the EVM vs Carrier result display the command returns one value for each subcarrier that has been analyzed lt EVM gt The unit depends on UNIT EVM The following parameters are supported TRACE1 Returns the av
94. aa ran cha sete 109 FETCh SUMMary EVM DSSF AVERage cente ttt ten 109 FEFChTAERrOESANTennasMUAXITWIE duode ente tuc cats ann nad aua Rente 109 FETChETAERrOEANTenna MI NIU ooi o ede nt RUD Renee eae 109 lt gt 4 20001 41 2411 0 6 nene 109 FETCh SUMMary EVM DSQP MAXimum FETCh SUMMary EVM DSQP MINimum FETCh SUMMary EVM DSQP AVERage This command queries the EVM of all resource elements of the PDSCH with a QPSK modulation Return values lt EVM gt lt numeric value gt EVM in or dB depending on the unit you have set Example FETC SUMM EVM DSQP Returns the PDSCH QSPK EVM Usage Query only Manual operation See Result Summary on page 24 FETCh SUMMary EVM DSST MAXimum FETCh SUMMary EVM DSST MINimum FETCh SUMMary EVM DSST AVERage This command queries the EVM of all resource elements of the PDSCH with a 16QAM modulation Return values lt EVM gt lt numeric value gt EVM in or dB depending on the unit you have set Example FETC SUMM EVM DSST Returns the PDSCH 16QAM EVM Usage Query only Manual operation See Result Summary on page 24 M User Manual 1173 9370 02 05 108 R amp S FSW K10x LTE Downlink Remote Control b_n 6 6 2 Remote Commands to Read Numeric Results FETCh SUMMary EVM DSSF
95. ace R amp S FSW B17 is installed Parameters State ON OFF RST OFF eee User Manual 1173 9370 02 05 138 R amp S FSW K10x LTE Downlink Remote Control SSS m a as Remote Commands to Configure the Application Manual operation See Input Sample Rate on page 62 INPut FILTer HPASs STATe State Activates an additional internal high pass filter for RF input signals from 1 GHz to 3 GHz This filter is used to remove the harmonics of the R amp S FSW in order to measure the harmonics for a DUT for example This function requires option R amp S FSW B13 Note for RF input signals outside the specified range the high pass filter has no effect For signals with a frequency of approximately 4 GHz upwards the harmonics are sup pressed sufficiently by the YIG filter Parameters State ON OFF RST OFF Usage SCPI confirmed Manual operation See High Pass Filter 1 3 GHz on page 61 INPut FILTer YIG STATe State This command turns the YIG preselector on and off Note the special conditions and restrictions for the YIG filter described in YIG Preselec tor on page 61 Parameters State ON OFF 0 1 RST 1 0 for I Q Analyzer GSM VSA and MC Group Delay measurements Example INP FILT YIG OFF Deactivates the YIG preselector Manual operation See YIG Preselector on page 61 INPut IQ BALanced STATe State This command defines whether the input is provided as a dif
96. ach PHICH in the PHICH group Each line in the result table represents one PHICH group The columns on the left show the ACK NACK pattern of the PHICH group The columns on the right show the relative powers for each PHICH If a PHICH is not transmitted the table contains a sign Otherwise the ACK NACK pattern is either a 1 acknowledgement or a 0 not acknowledged The relative power is a numeric value in dB e PDCCH For each PDCCH that has been detected the Channel Decoder shows several results Each line in the table represents one PDCCH User Manual 1173 9370 02 05 23 R amp S FSW K10x LTE Downlink Measurements and Result Displays Measurements RNTI DCI Format Shows the Downlink Control Information DCI format The DCI contains infor mation about the resource assignment for the UEs The following DCI formats are supported 0 1 1A 1B 1C 2 2A 2C 3 3A The DCI format is determined by the length of the DCI Because they have the same length the Channel Decoder is not able to distinguish formats 0 3 and 3A Note that a DCI that consist of only zero bits cannot be decoded PDCCH format used to transmit the CCE Offset The CCE Offset represents the position of the current DCI in the PDCCH bit stream Results for the PDCCH can only be determined if the PDSCH subframe configura tion is detected by the PDCCH Protocol or if automatic decoding of all control chan nels is turned on
97. ader and in most cases one or more parameters To use a command as a query you have to append a question mark after the last header element even if the command contains a parameter A header contains one or more keywords separated by a colon Header and parameters are separated by a white space ASCII code 0 to 9 11 to 32 decimal e g blank If there is more than one parameter for a command these are separated by a comma from one another Only the most important characteristics that you need to know when working with SCPI commands are described here For a more complete description refer to the User Manual of the R amp S FSW 6 2 1 Remote command examples Note that some remote command examples mentioned in this general introduction may not be supported by this particular application Conventions used in Descriptions Note the following conventions used in the remote command descriptions Command usage If not specified otherwise commands can be used both for setting and for querying parameters If a command can be used for setting or querying only or if it initiates an event the usage is stated explicitely e Parameter usage If not specified otherwise a parameter can be used to set a value and it is the result of a query Parameters required only for setting are indicated as Setting parameters Parameters required only to refine a query are indicated as Query parameters Parameters that are only returned as
98. al Pilot and Payload Optimal channel estimation method Examines both the reference signal and the payload resource elements Remote command SENSe LTE Db DEMod CESTimation on page 151 4 2 4 2 Compensating Measurement Errors The tracking settings contain settings that compensate for various common measure ment errors that may occur The tracking settings are part of the Parameter Estimation Tracking dialog box Phase Specifies whether or not the measurement results should be compensated for common phase error When phase compensation is used the measurement results will be com pensated for phase error on a per symbol basis Off Phase tracking is not applied Pilot Only Only the reference signal is used for the estimation of the phase error Pilot and Pay Both reference signal and payload resource elements are used for the load estimation of the phase error Remote command SENSe LTE DL TRACking PHASe on page 151 Timing Specifies whether or not the measurement results should be compensated for timing error When timing compensation is used the measurement results will be compensated for timing error on a per symbol basis Remote command SENSe LTE DL TRACking TIME on page 152 4 2 5 Demodulation Demodulation settings contain settings that describe signal processing and the way the signal is measured User Manual 1173 9370 02 05 71 R amp S FSW
99. anual operation See Defining the Signal Frequency on page 64 SENSe FREQuency CENTer STEP lt StepSize gt This command defines the center frequency step size You can increase or decrease the center frequency quickly in fixed steps using the SENS FREQ UP and SENS FREQ DOWN commands see SENSe FREQuency CENTer on page 141 Parameters lt StepSize gt 5 specified in the data sheet Range 1 to fMAX RST 0 1 x span Default unit Hz Example FREQ CENT 100 MHz FREQ CENT STEP 10 MHz FREQ CENT UP Sets the center frequency to 110 MHz Manual operation See Defining the Signal Frequency on page 64 SENSe FREQuency CENTer STEP LINK lt CouplingType gt This command couples and decouples the center frequency step size to the span or the resolution bandwidth User Manual 1173 9370 02 05 141 R amp S FSW K10x LTE Downlink Remote Control eS HIN Remote Commands to Configure the Application Parameters lt CouplingType gt SPAN Couples the step size to the span Available for measurements in the frequency domain OFF Decouples the step size RST SPAN Example FREQ CENT STEP LINK SPAN SENSe FREQuency CENTer STEP LINK FACTor lt Factor gt Parameters lt Factor gt 1 to 100 PCT RST 10 Example FREQ CENT STEP LINK FACT 20PCT SENSe FREQuency OFFSet lt Offset gt This command de
100. application data The application data range is defined by the same settings used to define the signal capture in Signal and Spectrum Analyzer mode In addition a capture offset can be defined i e an offset from the start of the captured data to the start of the analysis interval If a signal contains multiple data channels for multiple standards separate applications are used to analyze each data channel Thus it is of interest to know which application is analyzing which data channel The MSRA Master display indicates the data covered by each application by vertical blue lines labeled with the application name The blue lines correspond to the channel bandiwdth which is variable in case of LTE signals However the individual result displays of the application need not analyze the complete data range The data range that is actually analyzed by the individual result display is referred to as the analysis interval The analysis interval is automatically determined according to the Capture Time you have defined The analysis interval can not be edited directly in the LTE application but is changed automatically when you change the evaluation range The currently used analy sis interval in seconds related to capture buffer start is indicated in the window header for each result display e e A L L1 LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL LLLUS X User Manual 1173 9370 02 05 11 R amp S FSW K10x LT
101. arameter Estimation Estimation and tracking processes are done during the measurement to increase the quality of measurement results Boosting Estimation a EVM 3GPP Definition Phase Tracking Time Tracking m om p s e Estimating a ER x bue in 70 e Compensating Measurement 71 Estimating Parameters The parameter estimation settings contain settings that estimate various parameters during the measurement The parameter estimation settings are part of the Parameter Estimation Tracking dia log box Boosting Estimation Turns boosting estimation on and off If active the R amp S FSW automatically sets the relative power settings of all physical channels and the P S SYNC by analyzing the signal Remote command SENSe LTE DL DEMod BESTimation on page 151 User Manual 1173 9370 02 05 70 R amp S FSW K10x LTE Downlink Configuration ee eee SS a Configuring Measurements Channel Estimation Selects the method of channel estimation e EVM 3GPP Definition Channel estimation according to 3GPP TS 36 141 This method is based on aver aging in frequency direction and linear interpolation Examines the reference signal only e Optimal Pilot only Optimal channel estimation method Examines the reference signal only e Optim
102. as the copied channel extended by a con secutive number e g Spectrum gt Spectrum 2 The channel to be duplicated must be selected first using the INST SEL command This command is not available if the MSRA Master channel is selected Example INST SEL Spectrum INST CRE DUPL Duplicates the channel named Spectrum and creates a new mea surement channel named Spectrum 2 Usage Event INSTrument CREate NEW lt ChannelType gt lt ChannelName gt This command adds an additional measurement channel The number of measurement channels you can configure at the same time depends on available memory Parameters lt ChannelType gt Channel type of the new channel For a list of available channel types see table 6 1 lt ChannelName gt String containing the name of the channel The channel name is displayed as the tab label for the measurement channel Note If the specified name for a new channel already exists the default name extended by a sequential number is used for the new channel see table 6 1 Example INST CRE SAN Spectrum 2 Adds an additional spectrum display named Spectrum 2 INSTrument CREate REPLace lt ChannelName1 gt lt ChannelType gt lt ChannelName2 gt This command replaces a measurement channel with another one Parameters lt ChannelName1 gt String containing the name of the measurement channel you want to replace lt ChannelType gt Channel type of the new chan
103. ay For more information see chapter 6 5 1 Using the TRACe DATA Command on page 93 Query parameters lt TraceNumber gt TRACE1 TRACE2 TRACE3 LIST __ _ _ LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLCLLULLAUIXN User Manual 1173 9370 02 05 104 R amp S FSW K10x LTE Downlink Remote Control b_i Aaa 6 5 2 Remote Commands to Read Trace Data PBCH PCFICH PHICH PDCCH Example TRAC2 TRACE1 Queries results of the second measurement window The type of data that is returned by the parameter TRACE1 depends on the result display shown in measurement window 2 Usage Query only Remote Commands to Read Measurement Results lt gt 11 lt gt 105 lt gt 1 lt gt 5 0 105 lt gt lt gt 106 FORMalEDATA encierra td euh vwnansasnsntiesounsinatauanadusaensnadsvane 107 CALCulate lt n gt LIMit lt k gt ACPower ACHannel RESult Result This command queries the limit check results for the adjacent channels during ACLR measurements Query parameters Result ALL Queries the overall limit check results REL Queries the channel power limit check results ABS Queries
104. ays used Remote command INPut IMPedance on page 145 ETE 1 LLLLLLLA AALAUALLIZX User Manual 1173 9370 02 05 67 R amp S FSW K10x LTE Downlink Configuration Configuring Measurements 4 2 3 Signal Capture Configuring the Data 68 e Triggering MeasHremelle roten enne nn rh Rr rena FER un 69 4 2 3 4 Configuring the Data Capture The data capture settings contain settings that control the data capture The data capture settings are part of the Signal Capture tab of the Trigger Signal Cap ture dialog box Signal Capture Sample Rate 15 36 MHz Overall Frame Count on Accordang to Standard Set Number of Frames to Analyze Number of Frames Swap IQ Capture Time Defines the capture time The capture time corresponds to the time of one sweep Hence it defines the amount of data the application captures during one sweep By default the application captures 20 1 ms of data to make sure that at least one com plete LTE frame is captured in one sweep The application shows the current capture time in the channel bar Capture Time 20 1 ms Note that if you are using the multi standard radio analyzer only the MSRA master chan nel actually captures the data The capture time only defines the LTE analysis interval For more information see Selecting the operating mode on page 11 Remote command
105. bframes in a frame With this settings the number of OFDM symbols used for control channels is defined too For example if this parameter is set to 2 and the PDCCH is enabled the number of OFDM symbols actually used by the PDCCH is 2 Special control channels like the PCFICH or PHICH require a minimum number of control channel OFDM symbols at the beginning of each subframe If PRB Symbol Offset is lower than the required value the control channel data overwrites some resource elements of the PDSCH If Auto is selected the Control Region for PDCCH PRB Symbol Offset value is detected from the PCFICH For correct Demodulation of a 3GPP conform PCFICH signal the Scrambling of Coded Bits has to be enabled Remote command CONFigure LTE DL PSOFfset on page 134 Configuring the PBCH The physical broadcast channel PBCH carries system information for the user equip ment You can include or exclude the PBCH in the test setup and define the relative power of this channel The PBCH is part of the control channel The control channel settings are part of the Advanced Settings tab of the Signal Description dialog box Advanced Settings Control Channel eens User Manual 1173 9370 02 05 56 R amp S FSW K10x LTE Downlink Configuration Configuring Measurements PBCH Present Includes or excludes the PBCH from the test setup Remote command CONFigure LTE DL PBCH STAT on page 131 PBCH Relative P
106. combination with the query If available each SCPI parameter returns a different aspect of the results If SCPI parameters are supported you have to quote one in the query Example TRAC2 DATA 1 The format of the return values is either in ASCII or binary characters and depends on the format you have set with FORMat DATA Following this detailed description you will find a short summary of the most important functions of the command TRACe lt n gt DATA Selecting a measurement window Compared to the LTE application on the R amp S FSQ or R amp S FSV you have to select the measurement window directly with the suffix n at TRACe The range of n depends on the number of active measurement windows On an R amp S FSQ or R amp S FSV the suffix n was not supported On these instruments you had to select the measurement window with DISPlay WINDow lt n gt SELect first e Adjacent Channel Leakage 94 95 95 Capture BUNOT rece ee aee de RARO aa CK 96 LE ccr 96 e Channel Rte haee d 97 e QChannel rlatnibss alae 97 e Channel Flatness
107. cs of the R amp S FSW in order to measure the harmonics for a DUT for example This function requires option R amp S FSW B13 Note for RF input signals outside the specified range the high pass filter has no effect For signals with a frequency of approximately 4 GHz upwards the harmonics are sup pressed sufficiently by the YIG filter Remote command INPut FILTer HPASs STATe on page 139 YIG Preselector Activates or deactivates the YIG preselector An internal YIG preselector at the input of the R amp S FSW ensures that image frequencies are rejected However this is only possible for a restricted bandwidth In order to use the maximum bandwidth for signal analysis you can deactivate the YIG preselector at the input of the R amp S FSW which may lead to image frequency display Note that the YIG preselector is active only on frequencies greater than 8 GHz Therefore switching the YIG preselector on or off has no effect if the frequency is below that value Remote command INPut FILTer YIG STATe on page 139 Digital I Q Input The functionality of the Digital input is available with option R amp S FSW B17 Digital VO Input SEE 61 Input Sample 2 2 ee tin rta eh eden dene 62 Full Scale Loval 62 Adjust Reference Level to Full Scale Level ecce eee 62 Connected I ellutmelit uode decer e
108. ctor as shown in the result summary Return values lt CrestFactor gt lt numeric value gt Crest Factor in dB Example FETC SUMM CRES Returns the current crest factor in dB Usage Query only Manual operation See Result Summary on page 24 FETCh SUMMary EVM ALL MAXimum FETCh SUMMary EVM ALL MINimum FETCh SUMMary EVM ALL AVERage This command queries the EVM of all resource elements Return values lt EVM gt lt numeric value gt Minimum maximum or average EVM depending on the last com mand syntax element The unit is or dB depending on your selection User Manual 1173 9370 02 05 110 R amp S FSW K10x LTE Downlink Remote Control b_n Remote Commands to Read Numeric Results Example FETC SUMM EVM Returns the mean value Usage Query only Manual operation See Result Summary on page 24 FETCh SUMMary EVM PCHannel MAXimum FETCh SUMMary EVM PCHannel MINimum FETCh SUMMary EVM PCHannel AVERage This command queries the EVM of all physical channel resource elements Return values lt EVM gt lt numeric value gt Minimum maximum or average EVM depending on the last com mand syntax element The unit is or dB depending on your selection Example FETC SUMM EVM PCH Returns the mean value Usage Query only Manual operation See Result Summary on page 24 FETCh SUMMary EVM PSIGnal MAXimum FETCh SUMMary EVM PSIGnal MINimum FETCh SUMMar
109. ctrum Emission Mask iRm Clrw 1001 pts 3 5 MHz Span 35 0 MHz A table above the result display contains the numerical values for the limit check at each check point e Start Stop Freq Rel Shows the start and stop frequency of each section of the Spectrum Mask relative to the center frequency e RBW Shows the resolution bandwidth of each section of the Spectrum Mask e Freq at A to Limit Shows the absolute frequency whose power measurement being closest to the limit line for the corresponding frequency segment N User Manual 1173 9370 02 05 29 R amp S FSW K10x LTE Downlink Measurements and Result Displays b ii a Frequency Sweep Measurements e Power Abs Shows the absolute measured power of the frequency whose power is closest to the limit The application evaluates this value for each frequency segment e Power Rel Shows the distance from the measured power to the limit line at the frequency whose power is closest to the limit The application evaluates this value for each frequency segment Ato Limit Shows the minimal distance of the tolerance limit to the SEM trace for the corre sponding frequency segment Negative distances indicate the trace is below the tol erance limit positive distances indicate the trace is above the tolerance limit 2 Result Summary LTE Category A Freq gt 1GHz DL Tx Power 45 24 dBm Tx Bandwidth 10 000 MHz RBW 100 000 kHz Frequency Power Abs Power Rel ALimit 982 51724 MHz 21
110. decoding of all control channels on and off Parameters lt State gt ON OFF RST OFF Example DL DEM DACH ON Turns decoding of all control channels on Manual operation See Decode All Control Channels on page 73 SENSe LTE DL DEMod EVMCalc lt Calculation gt This command selects the EVM calculation method for downlink signals Parameters lt Calculation gt TGPP 3GPP definition OTP Optimal timing position RST TGPP Example DL DEM EVMC TGPP Use 3GPP method Manual operation See EVM Calculation Method on page 73 SENSe LTE DL DEMod PRData lt Reference gt This command the type of reference data to calculate the EVM for the PDSCH Parameters lt Reference gt AUTO Automatic identification of reference data ALLO Reference data is 0 according to the test model definition Example DL DEM PRD ALLO Sets the reference data of the PDSCH to 0 Manual operation See PDSCH Reference Data on page 73 6 7 2 5 Parameter Estimation Estimating Parameters SENS amp IEETEEDEDEMGOBESTimatioh ee 151 ISENSeIELTEEDIUDEMOSIGES TIMANON cere ea eaaet te nen ete e nons 151 User Manual 1173 9370 02 05 150 R amp S FSW K10x LTE Downlink Remote Control a a a es Remote Commands to Configure the Application SENSe LTE DL DEMod BESTimation lt State gt This command turns boosting estimation for downlink signals on and off Parameters lt State gt
111. e frame number on Example FRAM COUN AUTO ON Turns automatic selection of the analyzed frames on Manual operation See Auto According to Standard on page 69 SENSe SWAPiq State This command turns a swap of the and Q branches on and off Parameters State ON OFF RST OFF Example SWAP ON Turns a swap of the and Q branches on Manual operation See Swap Q on page 64 See Swap Q on page 69 SENSe SWEep TIME lt CaptLength gt This command sets the capture time Parameters lt CaptLength gt Numeric value in seconds Default unit s Example SWE TIME 40 Defines a capture time of 40 seconds Manual operation See Capture Time on page 68 Trigger The trigger functionality of the LTE measurement application is the same as that of the R amp S FSW E N User Manual 1173 9370 02 05 148 R amp S FSW K10x LTE Downlink Remote Control pem O _ nx 6 7 2 4 Remote Commands to Configure the Application For a comprehensive description of the available remote control commands for trigger configuration see the documentation of the R amp S FSW Demodulation SENSejJ L TE DL DEMod MCFilter cec teet tette 149 SENSe EL 9 nennen 149 CONFIGurE EE TE DLIMIMO C ROSS tales 2 2 2 tease ced a 149 SENS amp EETEEDE
112. e signal Note that a complete set of results for the control channels is available only under certain circumstances e The corresponding control channel PBCH PCFICH or PHICH has to be present and enabled e Each channel must have a certain configuration see list below 4 Channel Decoder Results Sub Allocation Frame ID ACK 1 NACK O For each channel the table shows a different set of values e For the PBCH the Channel Decoder provides the following results the MIMO configuration of the DUT 1 2 or 4 TX antennas the Transmission bandwidth the Duration of the PHICH normal or extended the PHICH resource which is the same as PHICH N 1 6 1 2 1 or 2 System frame number If the CRC is not valid a corresponding message is shown instead of the results Results for the PBCH can only be determined if the PHICH Duration or the PHICH gare automatically determined Auto or if automatic decoding of all control channels is turned on e PCFICH For the PCFICH the Channel Decoder provides the number of OFDM symbols that are used for PDCCH at the beginning of a subframe e PHICH The PHICH carries the hybrid ARQ ACK NACK Multiple PHICHs mapped to the same set of resource elements are a PHICH group The within one group are separated by different orthogonal sequences For the PHICH the Channel Decoder provides the ACK NACK pattern for the PHICH group and the relative power for e
113. e time Auto Scale All Remote command DISPlay WINDow lt n gt TRACe Y SCALe AUTO ONCE on page 154 DISPlay WINDowcn TRACe Y SCALe MAXimum on page 155 DISPlay WINDowcn TRACe Y SCALe MINimum page 155 Result Settings Result settings define the way certain measurement results are displayed EVM Unit EVM UN 78 Bit Stean POEYIdl e tre ete eere Du 78 EVM Unit Selects the unit for graphic and numerical EVM measurement results Possible units are dB and Remote command UNIT EVM on page 156 Bit Stream Format Selects the way the bit stream is displayed The bit stream is either a stream of raw bits or of symbols In case of the symbol format the bits that belong to a symbol are shown as hexadecimal numbers with two digits Examples I L u LLALLLLLLLLLLLLLLLLLLLLLLLLLLULULULUUILAX S User Manual 1173 9370 02 05 78 R amp S FSW K10x LTE Downlink Analysis b gt ea ass Analyzing Frequency Sweep Measurements Bit Stream 100000000100001000110000100111001010101100001101 11101001101110010001 01010110100111111011001 001001011011111100100110101001100110000000110001 144 100101000110100101111111010001011000111010110010 Fig 5 2 Bit stream display in downlink application if the bit stream format is set to bits Remote command UNIT BSTR on page 1
114. ean parameters When you query boolean parameters the system returns either the value 1 ON or the value 0 OFF Example Setting DISPlay WINDow ZOOM STATe ON Query DISPlay WINDow ZOOM STATe would return 1 ERREUR RA I LLL ALLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLU LLUM SXMXI User Manual 1173 9370 02 05 84 R amp S FSW K10x LTE Downlink Remote Control Remote Commands to Select the LTE Application 6 2 6 3 Character Data Character data follows the syntactic rules of keywords You can enter text using a short or a long form For more information see chapter 6 2 2 Long and Short Form on page 82 Querying text parameters When you query text parameters the system returns its short form Example Setting SENSe BANDwidth RESolution TYPE NORMal Query SENSe BANDwidth RESolution TYPE would return NORM 6 2 6 4 Character Strings Strings are alphanumeric characters They have to be in straight quotation marks You can use a single quotation mark or a double quotation mark Example INSTRument DELete Spectrum 6 2 6 5 Block Data Block data is a format which is suitable for the transmission of large amounts of data The ASCII character introduces the data block The next number indicates how many of the following digits describe the length of the data block In the example the 4 following digits indicate the length to be 5168 bytes The data bytes follow
115. ectly e the subframe selection in the general settings menu must be set to All e enable Compensate Crosstalk in the demodulation settings see screenshot below Note that the time alignment measurement only uses the reference signal and therefore ignores any PDSCH settings e g it does not have an influence on this measurement if the PDSCH MIMO scheme is set to transmit diversity or spatial multiplexing The EVM will usually be very high for this measurement This does not effect the accuracy of the time alignment error measurement result T User Manual 1173 9370 02 05 36 Performing Time Alignment Measurements Tx Antenna 1 104 21 pejs auie14 317 Time Tx Antenna 2 E 10je5ipu pejs ewes4 311 Time Tx Antenna 3 Time Alignment Error 23 1 10 e2Ipu es awel 311 Time 1 4 Time Alignment Error 10 e2Ipu es 1 3 11 Time Fig 3 3 Schematic description of the time alignment results R amp S FSW K10x LTE Downlink Configuration Configuration Overview 4 Configuration LTE measurements require a special application on the R amp S FSW which you activate using the MODE key on the front panel When you activate a measurement channel in the LTE application a measurement for the input signal is started automatically with the default configuration The LTE menu is displayed and provides access to the most important configuration function
116. ed samples of the measurement path yellow still contain the transmitted signal impair ments of interest The analysis block reveals these impairments by comparing the refer ence and the measurement path Prior to the analysis diverse synchronization and channel estimation tasks have to be accomplished Synchronization The first of the synchronization tasks is to estimate the OFDM symbol timing which coarsely estimates both timing and carrier frequency offset The frame synchronization block determines the position of the P S Sync symbols in time and frequency by using the coarse fractional frequency offset compensated capture buffer and the timing esti mate to position the window of the FFT If no P S Sync is available in the signal the reference signal is used for synchronization The fine timing block prior to the FFT allows a timing improvement and makes sure that the EVM window is centered on the measured cyclic prefix of the considered OFDM symbol For the 3GPP EVM calculation according to 3GPP TS 36 211 v8 9 0 the block window produces three signals taken at the timing offsets 4 i and 5 For the reference path only the signal taken at the timing offset 42 is used RU OTI e LLL L IL LALLLULLL AXA User Manual 1173 9370 02 05 32 R amp S FSW K10x LTE Downlink Measurement Basics The LTE Downlink Analysis Measurement Application lI Q data capture Frequency su ME
117. ee Auto PDSCH Demodulation on page 46 CONFigure LTE DL CSUBframes lt NofSubframes gt This command selects the number of configurable subframes in the downlink signal Parameters lt NofSubframes gt Range 0 to 39 RST 1 CONF DL CSUB 5 Sets the number of configurable subframes to 5 Manual operation See Configuring PDSCH Allocations on page 48 CONFigure LTE DL SUBFrame lt subframe gt ALCount lt NofAllocations gt This command defines the number of allocations in a downlink subframe Parameters lt NofAllocations gt lt numeric value gt RST 1 Example CONF DL SUBF2 ALC 5 Defines 5 allocations for subframe 2 Manual operation See Configuring PDSCH Allocations on page 48 CONFigure L TE DL SUBFramessubframe ALLoc allocation POWer Power This command defines the relative power of an allocation in a downlink subframe Parameters Power numeric value RST 0 dB Default unit DB Example CONF DL SUBF2 ALL5 POW 1 3 Defines a relative power of 1 3 dB for allocation 5 in subframe 2 Manual operation See Configuring PDSCH Allocations on page 48 N User Manual 1173 9370 02 05 124 R amp S FSW K10x LTE Downlink Remote Control a a ae ea Hn Remote Commands to Configure the Application CONFigure LTE DL 5UBFrame lt subframe gt ALLoc lt allocation gt PSOFfset lt PSOFfset gt This command defines the PDSCH start offset for a particular PD
118. eed 121 FETCh SUMMary CRESt AVERage 110 5 108 5 108 5 22 0022 400 00 000000000000 108 5 109 5 5 109 FETCh SUMMary EVM DSSF AVERage 109 5 55 108 FETCh SUMMary EVM DSST MlINimum essen nnne retener nnne nre enne 108 6 6 nennen eee 108 508 111 FETCh SUMMary EVM PCHannel MINimum eeseeseseeeeeeeenenne nennen rennen nnnm 111 FETCh SUMMary EVM PCHannel AVERage 111 FETCh SUMMary EVM PSIGnal MAXimUm cccccceseeeeeeeeeeeeeeeeeeeeecaecenecaeseaesaeeeaeeeeesaeeeeeseeeaeeareeeeatesas 111 FETCh SUMMary EVM PSIGn
119. eference signal it is automat ically defined for both reference signals Remote command CONFigure LTE DL SFNO on page 129 Configuring the Channel State Information Reference Signal The channel state information reference signal CSI RS settings contain settings to describe the physical attributes and structure of the Channel State Information Reference Signal CSI RS CSI RS are used to estimate the channel properties of the signal propagation channel from the base station to the user equipement This information is quantized and fed back to the base station The base station makes use of this information for example to adjust the beamforming parameters The mapping of antenna port to the physical antenna is fix e Port 15 antenna 1 e Port 16 antenna 2 e Port 17 antenna 3 e Port 18 antenna 4 T User Manual 1173 9370 02 05 53 R amp S FSW K10x LTE Downlink Configuration Configuring Measurements Resource elements used by CSI RS are shown in yellow color in the Allocation ID versus Symbol X Carrier measurement The CSI RS settings are part of the Advanced Settings tab of the Signal Description dialog box AdvancedSettings Reference Signal Overwrite POSCH 54 Anena 54 2 5 npn 54 eis 55 Relative Power
120. em LTE The R amp S FSW opens a new measurement channel for the LTE measurement appli cation o LTE PC software and LTE measurement application If you are using the EUTRA LTE PC Software in combination with an R amp S FSW the Mode dialog box also contains a item for this software It is labeled LTE Software and opens the PC software on the R amp S FSW A comprehensive description of the functionality of this software is provided in a separate manual available for download on the internet The measurement is started immediately with the default settings It can be configured in the Overview dialog box which is displayed when you select the Overview softkey from any menu User Manual 1173 9370 02 05 7 R amp S FSW K10x LTE Downlink Welcome to the LTE Measurement Application Understanding the Display Information For more information see chapter 4 Configuration on page 38 1 2 Understanding the Display Information The following figure shows a measurement diagram during analyzer operation All dif ferent information areas are labeled They are explained in more detail in the following sections 1 Toolbar 2 Channel bar 3 Diagram header 4 Result display 5 Softkey bar 6 Status bar MSRA operating mode In MSRA operating mode additional tabs and elements are available A colored back ground of the screen behind the measurement channel tabs indicates that you are in MSRA operating mode F
121. er Manual 1173 9370 02 05 127 R amp S FSW K10x LTE Downlink Remote Control a a ee ee Remote Commands to Configure the Application CONFigure LTE DL PRSS BW lt Bandwidth gt This command defines the bandwidth of the positioning reference signal Parameters lt Bandwidth gt BW1_40 BW3_00 BW5_00 BW10_00 BW15_00 BW20 00 RST BW1 40 Default unit MHz Example CONF DL PRSS BW BW5 00 Defines a 5 MHz bandwidth for the positiong reference signal Manual operation See Bandwidth on page 52 CONFigure L TE DL PRSS CI lt PRSConfiguration gt This command selects the configuration index of the Positioning Reference Signal Parameters lt PRSConfiguration gt Number of the configuration index Example CONF DL PRSS CI 2 Selects configuration index 2 for the positioning reference signal Manual operation See Configuration Index on page 53 CONFigure LTE DL PRSS NPRS lt NofDLSubframes gt This command defines the number of subframes the Positioning Reference Signal occu pies Parameters lt NofDLSubframes gt 1 21 41 6 Example CONF DL PRSS NPRS 1 Defines 1 subframe for the poitioning reference signal Manual operation See Num Subframes N_PRS on page 53 CONFigure LTE DL PRSS POWer lt Power gt This command defines the relative power of the Positioning Reference Signal Parameters lt Power gt Default unit dB Example CONF DL PRSS POW 1 Defines a rela
122. erage EVM over all subframes e TRACE2 Returns the minimum EVM found over all subframes If you are analyzing a particular subframe it returns nothing TRACE3 Returns the maximum EVM found over all subframes If you are analyzing a particular subframe it returns nothing 6 5 1 12 EVM vs RB For the EVM vs RB result display the command returns one value for each resource block that has been analyzed lt EVM gt The unit depends on UNIT EVM User Manual 1173 9370 02 05 99 R amp S FSW K10x LTE Downlink Remote Control bii 6 5 1 13 6 5 1 14 6 5 1 15 Remote Commands to Read Trace Data The following parameters are supported e TRACE1 Returns the average power for each resource block over all subframes e TRACE2 Returns the minimum power found over all subframes If you are analyzing a partic ular subframe it returns nothing e TRACE3 Returns the maximum power found over all subframes If you are analyzing a partic ular subframe it returns nothing EVM vs Symbol For the EVM vs Symbol result display the command returns one value for each OFDM symbol that has been analyzed lt EVM gt For measurements on a single subframe the command returns the symbols of that sub frame only The unit depends on UNIT EVM The following parameters are supported e 1 EVM vs Subframe For the EVM vs Subframe result display the command returns one value for each sub fra
123. eristics of the signal at the RF input Amplitude Defining a Reference Level eee 65 Attenuatirig de re huoc aec hb Re Eee age ie E oz 66 Preamplifier option 24 nnne 67 dier pio 67 ns erue me 67 Defining a Reference Level The reference level is the power level the R amp S FSW expects at the RF input Keep in mind that the power level at the RF input is the peak envelope power in case of signals with a high crest factor like LTE To get the best dynamic range you have to set the reference level as low as possible At the same time make sure that the maximum signal level does not exceed the reference level If it does it will overload the A D converter regardless of the signal power Mea surement results may deteriorate e g EVM This applies especially for measurements with more than one active channel near the one you are trying to measure 6 MHz Note that the signal level at the A D converter may be stronger than the level the appli cation displays depending on the current resolution bandwidth This is because the res olution bandwidths are implemented digitally after the A D converter You can specify the reference level in several units and define an arithmetic level off set A level offset is useful if the signal is attenuated or amplified before it is fed
124. eters lt NofGroups gt lt numeric value gt RST 0 Example CONF DL PHIC NOGR 5 Sets number of PHICH groups to 5 Manual operation See PHICH Number of Groups on page 59 CONFigure LTE DL PHICh POWer lt Power gt This command defines the relative power of the PHICH Parameters lt Power gt lt numeric value gt RST 3 01 dB Default unit DB Example CONF DL PHIC POW 1 3 Sets the relative power to 1 3 dB Manual operation See PHICH Rel Power on page 59 CONFigure LTE DL PSOFfset Offset This command defines the symbol offset for PDSCH allocations relative to the start of the subframe The offset applies to all subframes ERREUR E N User Manual 1173 9370 02 05 134 R amp S FSW K10x LTE Downlink Remote Control SS H Remote Commands to Configure the Application Parameters lt Offset gt AUTO Automatically determines the symbol offset lt numeric value gt Manual selection of the symbol offset Range 0 to 4 RST AUTO Example CONF DL PSOF 2 Sets an offset of 2 symbols Manual operation See PRB Symbol Offset on page 56 Shared Channel CONFEISureEETEEDESPDSGCDIIPB iate Sede tete dte eu E od exe Saee 135 CONFigure LTE DL PDSCh PB lt PDSChPB gt This command selects the PDSCH power ratio Note that the power ratio depends on the number of antennas in the system Parameters lt PDSChPB gt Numeric value tha
125. ew one T User Manual 1173 9370 02 05 89 R amp S FSW K10x LTE Downlink Remote Control pec SESESESESE gt E _ e Performing Measurements Example ABOR WAI INIT IMM Aborts the current measurement and starts a new one once abor tion has been completed Usage SCPI confirmed INITiate CONTinuous State This command controls the sweep mode Note that in single sweep mode you can synchronize to the end of the measurement with OPC OPC or WAI In continuous sweep mode synchronization to the end of the measurement is not possible Thus it is not recommended that you use continuous sweep mode in remote control as results like trace data or markers are only valid after a single sweep end synchronization For details on synchronization see the Remote Basics chapter in the R amp S FSW User Manual If the sweep mode is changed for a measurement channel while the Sequencer is active see rNiITiate SEQuencer IMMediate on page 91 the mode is only considered the next time the measurement in that channel is activated by the Sequencer Parameters State OFF 0 1 ON 1 Continuous sweep OFF 0 Single sweep RST 1 Example INIT CONT OFF Switches the sweep mode to single sweep INIT CONT ON Switches the sweep mode to continuous sweep INITiate IMMediate This command starts a single new measurement You can synchronize to the end of
126. ferential signal via all 4 Ana log Baseband connectors or as a plain 1 0 signal via 2 simple ended lines Parameters State ON Differential OFF Simple ended RST ON Example INP IQ BAL OFF T User Manual 1173 9370 02 05 139 R amp S FSW K10x LTE Downlink Remote Control Manual operation Remote Commands to Configure the Application See Input configuration on page 64 INPut IQ TYPE lt DataType gt This command defines the format of the input signal Parameters lt DataType gt Example Manual operation IQ IJQ IQ The input signal is filtered and resampled to the sample rate of the application Two input channels are required for each input signal one for the in phase component and one for the quadrature component l The quadrature component of the input signal is filtered and resampled to the sample rate of the application If the center fre quency is not 0 the quadrature component of the input signal is down converted first Low IF Q Q The quadrature component of the input signal is filtered and resampled to the sample rate of the application If the center fre quency is not 0 the quadrature component of the input signal is down converted first Low IF Q RST IQ INP IO TYPE 0 See 1 Q Mode on page 63 INPut SELect lt Source gt This command selects the signal source for measurements i e it defines which connec tor is used to input data to the R amp S FSW If
127. figuration If these predefined display configurations do not suit your requirements you can add or remove result displays as you like For more information about selecting result displays see Selecting result displays on page 10 Depending on what button you select the application changes the way the R amp S FSW capture and processes the raw signal data e When you select EVM or Time Alignment the application processes the data of the signal For more information on available result displays see chapter 2 1 Measurements on page 12 When you select one of the result displays available for measurements you combine the result displays available for measurements in any way e When you select Channel Power ACLR or Spectrum Emission Mask the appli cation performs a frequency sweep For more information see chapter 2 3 Fre quency Sweep Measurements on page 27 When you select one of the frequency sweep measurements you can combine the result displays available for the frequency sweep measurements in any way Note that you can not display the ACLR and SEM at the same time Selecting result displays Select the icon in the toolbar or press the Display Config softkey in the Mea surement menu The application enters the SmartGrid configuration mode For more information on the SmartGrid functionality see the R amp S FSW Getting Star ted In the default state of the application
128. fines a frequency offset If this value is not 0 Hz the application assumes that the input signal was frequency shifted outside the application All results of type frequency will be corrected for this shift numerically by the application Parameters lt Offset gt Range 100 GHz to 100 GHz RST 0 Hz Example FREQ OFFS 1GHZ Usage SCPI confirmed Manual operation See Defining the Signal Frequency on page 64 Configuring the Vertical Axis eget ws ubl apo ap 143 lt gt 5 0 0000000 00000000 1106 143 DISPlay WINDow n TRACe Y SCALe RLEVel OFFSet sse 143 INPUEATTOnDLBlIOE cte a aec cen dena n ena dece Ra en ich i teni cease 143 INPUTS Te c 144 T X 144 INPUTS AI VALUS ste tdt bte He eai ern ee e a domes eua cust 144 bdznzeci pelEdp Relates aes asset date 145 amp 2 Dess to dade psu deae eo enne dte enne dte enun sine de eir pne 145 EATE eT TE 146 146 INPutemsEATTISTATS 146 I SENSGJADUJUSELIEVOl 1 r
129. g channels The lt channel type gt is encoded For the code assignment see chapter 6 5 1 21 Return Value Codes on page 102 Note that the TX channel does not have a lt spacing offset gt NaN is returned instead 6 5 1 2 Allocation Summary For the Allocation Summary the command returns seven values for each line of the table lt subframe gt lt allocation ID gt lt number of RB gt lt relative power gt lt modulation gt lt absolute power gt lt EVM gt The unit for lt absolute power gt is always dBm The unit for lt relative power gt is always dB The unit for lt EVM gt depends on UNIT EVM All other values have no unit The lt allocation ID gt and lt modulation gt are encoded For the code assignment see chapter 6 5 1 21 Return Value Codes on page 102 Note that the data format of the return values is always ASCII Example Allocation Summary Selection Antenna 1 Sub Humber Rel Power per frame i of RB Power dB Modulation 0 000 TRAC DATA TRACE1 would return 0 5 0 0 0000000000000 2 45 5463829153428 7 33728660354122E 05 0 3 0 0 0073997452251 6 42 5581007463452 2 54197349219455E 05 0 4 0 0 0052647197362 1 42 5464220485716 2 51485275782241E 05 6 5 1 3 Bit Stream For the Bit Stream result display the command returns five values and the bitstream for each line of the table subframe allocation ID codeword modulation
130. get a valid result you have to perform a complete measurement with synchronization to the end of the measurement before reading out the result This is only possible for single sweeps See also INITiate CONTinuous page 90 The unit depends on the application of the command Return values lt Position gt Position of the delta marker in relation to the reference marker or the fixed reference Example INIT CONT OFF Switches to single sweep mode INIT WAI Starts a sweep and waits for its end CALC DELT2 ON Switches on delta marker 2 CALC DELT2 Y Outputs measurement value of delta marker 2 Usage Query only CALCulate lt n gt MARKer lt m gt X lt Position gt This command moves a marker to a particular coordinate on the x axis If necessary the command activates the marker If the marker has been used as a delta marker the command turns it into a normal marker M User Manual 1173 9370 02 05 115 R amp S FSW K10x LTE Downlink Remote Control SSS M OU M A M M M M M eexl 6 7 6 7 1 Remote Commands to Configure the Application Parameters Position Numeric value that defines the marker position on the x axis Range The range depends on the current x axis range Example CALC MARK2 X 1 7MHz Positions marker 2 to frequency 1 7 MHz Manual operation See Marker Table on page
131. glConf Software Operating Manual Note If you close the R amp S DiglConf window using the Close icon the window is mini mized not closed If you select the File gt Exit menu item in the R amp S DiglConf window the application is closed Note that in this case the settings are lost and the EX IQ BOX functionality is no longer available until you restart the application using the DiglConf softkey in the R amp S FSW once again Analog Baseband The functionality of the Analog Baseband input is available with option R amp S FSW B71 Analog Baseband Input 2 63 VO MOE m S 63 TIE 64 64 Analog Baseband Input State Enables or disable the use of the Analog Baseband input source for measurements Analog Baseband is only available if the Analog Baseband Interface R amp S FSW B71 is installed Remote command INPut SELect on page 140 Mode Defines the format of the input signal For more information on data processing modes see the R amp S FSW I Q Analyzer and Input User Manual jQ The input signal is filtered and resampled to the sample rate of the application Two inputs are required for a complex signal one for the in phase com ponent and one for the quadrature component Only Low IF I The input signal at the BASEBAND INPUT I connector is filtered and re
132. gnal Defines the power of a CSI reference signal resource element in relation to the power of a common reference signal resource element Remote command CONFigure LTE DL CSIRs POWer on page 130 Subframe Configuration Defines the CSI reference signal subframe configuration index CSI RS as defined in 3GPP TS 36 211 table 6 10 5 3 1 Remote command CONFigure LTE DL CSIRs SCI on page 130 Frame Number Offset Defines the system frame number of the current frame that you want to analyze Because the positioning reference signal and the CSI reference signal usually have a periodicity of several frames for some reference signal configurations is it necessary to change the expected system frame number of the frame to be analyzed Note that if you define the frame number offset for either reference signal it is automat ically defined for both reference signals Remote command CONFigure LTE DL SFNO on page 129 Defining the PDSCH Resource Block Symbol Offset The PDSCH resource block symbol offset is part of the Advanced Settings tab of the Signal Description dialog box User Manual 1173 9370 02 05 55 R amp S FSW K10x LTE Downlink Configuration Configuring Measurements Advanced Settings Control Channel PRE Sytbol 56 PRB Symbol Offset PRB Symbol Offset specifies the symbol offset of the PDSCH allocations relative to the subframe start This setting applies to all su
133. h antenna The results for each antenna are summarized in a table For each antenna the maximum minimum and average time delay that has been measured is shown Note that the min imum and maximum results are calculated only if the measurement covers more than one frame Remote command FETCh TAERror ANTenna lt antenna gt AVERage on 109 2 3 Frequency Sweep Measurements The Spectrum Emission Mask SEM and Adjacent Channel Leakage Ratio ACLR measurements are the only frequency sweep measurements available for the LTE mea surement application They do not use the I Q data all other measurements use Instead those measurements sweep the frequency spectrum every time you run a new mea surement Therefore it is not possible to to run an measurement and then view the results in the frequency sweep measurements and vice versa Also because each of the frequency sweep measurements uses different settings to obtain signal data it is not possible to run a frequency sweep measurement and view the results in another fre quency sweep measurement Frequency sweep measurements are available if RF input is selected Dern c 27 Spectrum MASKE eite edet Mi e te CON e Feed halen etas poe ud sess 29 ACLR Starts the Adjacent Channel Leakage Ratio ACLR measurement The ACLR measurement analyzes the power of the transmission TX channel and the power of
134. hannel type gt e 0 TX channel e 1 adjacent channel e 2 alternate channel lt codeword gt Represents the codeword of an allocation The range is 0 2 e 0 1 1 e 1 1 2 2 2 2 DCI format Represents the DCi format The value is a number in the range 0 103 e 0 DCI format 0 e 10 format 1 e 11 DCI format 1 12 DCI format 1B e 13 DCI format 1C e 14 DCI format 1D 20 DCI format 2 e 21 DCI format 2A e 22 DCI format 2B T User Manual 1173 9370 02 05 103 R amp S FSW K10x LTE Downlink Remote Control eee eS SSS Remote Commands to Read Trace Data 23 DCI format 2C 30 DCI format 3 e 31 DCI format A e 103 DCI format 0 3 3A lt modulation gt Represents the modulation scheme The range is 0 8 e 0 unrecognized e 1 RBPSK e 2 5 e 3 16QAM e 4 64 e 5 8PSK e 6 PSK e 7 mixed modulation e 8 BPSK number of symbols or bits In hexadecimal mode this represents the number of symbols to be transmitted In binary mode it represents the number of bits to be transmitted PHICH duration Represents the PHICH duration The range is 1 2 e 1 normal e 2 extended PHICH resource Represents the parameter N The range is 1 4 e 1 N 1 6 e 2 1 2 e 3 N 1 4 2 TRACe lt n gt DATA lt Result gt This command returns the trace data for the current measurement or result displ
135. he result display does not show OFDM symbols that are not part of the measured link direc tion On the y axis the EVM is plotted either in or in dB depending on the EVM Unit 2 EVM vs Symbol 10 Symb 139 Symb Remote command LAY ADD 1 LEFT EVSY TRACe DATA EVM vs RB Starts the EVM vs RB result display This result display shows the Error Vector Magnitude EVM for all resource blocks that can be occupied by the PDSCH The results are based on an average EVM that is calculated over all resource elements in the resource block This average resource block EVM is determined for each analyzed subframe If you analyze all subframes the result display contains three traces e Average EVM This trace shows the resource block EVM averaged over all subframes e Minimum EVM This trace shows the lowest average resource block EVM that has been found over the analyzed subframes e Maximum EVM This trace shows the highest average resource block EVM that has been found over the analyzed subframes User Manual 1173 9370 02 05 15 R amp S FSW K10x LTE Downlink Measurements and Result Displays Measurements If you select and analyze one subframe only the result display contains one trace that shows the resource block EVM for that subframe only Average minimum and maximum values in that case are the same For more information see Subframe Selection on page 76 The x axis represents the PDSCH resource bl
136. he PHICH duration Parameters Duration NORM Normal EXT Extended RST NORM Example CONF DL PHIC DUR NORM Selects normal PHICH duration Manual operation See PHICH Duration on page 58 CONFigure L TE DL PHICh MITM State This command includes or excludes the use of the PHICH special setting for enhanced test models Parameters State ON OFF RST OFF Example CONF DL PHIC MITM ON Activates PHICH TDD m_i 1 E TM Manual operation See TDD m_i 1 E TM on page 58 CONFigure LTE DL PHICh NGParameter lt Ng gt This command selects the method that determines the number of PHICH groups in subframe T User Manual 1173 9370 02 05 133 R amp S FSW K10x LTE Downlink Remote Control b _ Ss Remote Commands to Configure the Application Parameters lt Ng gt NG1_6 NG1_2 NG1 NG2 NGCUSTOM Select NG_CUSTOM to customize N You can then define the variable as you like with CONFigure LTE DL PHICh NOGRoups RST NG1_6 Example CONF DL PHIC NGP NG1 6 Sets N to 1 6 The number fo PHICH groups in the subframe depends on the number of resource blocks CONF DL PHIC NGP NG CUSTOM Define a customized value for N CONF DL PHIC NOGR 5 Directly sets the number of PHICH groups in the subframe to 5 Manual operation See N on page 58 CONFigure L TE DL PHICh NOGRoups lt NofGroups gt This command sets the number of PHICH groups Param
137. he measurement before reading out the result This is only possible for single sweeps Suffix lt m gt 1 Query parameters CPOW This parameter queries the signal power of the SEM measure ment E User Manual 1173 9370 02 05 106 R amp S FSW K10x LTE Downlink Remote Control O SS Remote Commands to Read Numeric Results Return values lt Result gt SEMResults Power level in dBm ACLRResults Relative power levels of the ACLR channels The number of return values depends on the number of transmission and adjacent channels The order of return values is lt TXChannelPower gt is the power of the transmission channel in dBm lt LowerAdjChannelPower gt is the relative power of the lower adjacent channel in dB lt UpperAdjChannelPower gt is the relative power of the upper adjacent channel in dB 1stLowerAltChannelPower is the relative power of the first lower alternate channel in dB 1stUpperAltChannelPower is the relative power of the first lower alternate channel in dB lt nthLowerAltChannelPower gt is the relative power of a subse quent lower alternate channel in dB nthUpperAltChannelPower is the relative power of a subse quent lower alternate channel in dB Example CALC1 MARK FUNC POW RES Returns the current ACLR measurement results Usage Query only Manual operation See ACLR on page 27 FORMat DATA lt Format gt This command specifies the data f
138. how an error message in the Conflicts column and the Error in Subframes field e Offset RB Sets the resource block at which the allocation begins A wrong offset for any allocation would lead to an overlap of allocations In that case the application will show an error message e Power dB Sets the boosting of the allocation Boosting is the allocation s power relative to the reference signal power e Conflict In case of a conflict the application shows the type of conflict and the ID of the allo cations that are affected Possible conflicts are bandwidth error BW A bandwidth error occurs when the number of resource blocks in the subframe exceeds the bandwidth you have set Number of Albcations 6 Subtrame Bandwidth 3 Mrz or 15 Resource Blocks RB overlap errors An RB overlap error occurs if one or more allocations overlap In that case check if the length and offset values of the allocations are correct SS SSSR SSE User Manual 1173 9370 02 05 49 Configuring Measurements Number of Alpcations 6 Subframe BandwkXh 3 15 Resource Bbs Remote command Configurable Subframes CONFigure LTE DL CSUBframes on page 124 Used Allocations CONFigure LTE DL SUBFrame subframe ALCount on page 124 Modulation CONFigure LTE DL SUBFrame subframe ALLoc allocation CW lt Cwnum gt MODulation on page 126 Number of RB CONFigure LTE DL SUBFrame
139. into the analyzer All displayed power level results will be shifted by this value Note however that the reference value ignores the level offset Thus it is still mandatory to define the actual power level that the analyzer has to handle as the reference level T User Manual 1173 9370 02 05 65 R amp S FSW K10x LTE Downlink Configuration Configuring Measurements You can also use automatic detection of the reference level with the Auto Level func tion If active the application measures and sets the reference level to its ideal value Automatic level detection also optimizes RF attenuation The application shows the current reference level including RF and external attenuation in the channel bar Ref Level 0 00 dBm Remote command Manual DISPlay WINDowcn TRACe Y SCALe RLEVel on page 143 Automatic SENSe ADJust LEVel on page 147 Offset DISPlay WINDowcn TRACe Y SCALe RLEVel OFFSet on page 143 Unit CALCulate lt n gt UNIT POWer on page 143 Attenuating the Signal Attenuation of the signal may become necessary if you have to reduce the power of the signal that you have applied Power reduction is necessary for example to prevent an overload of the input mixer The LTE application provides several attenuation modes e Mechanical or RF attenuation is always available The mechanical attenuator con trols attenuation at the RF input If you have equipped your R amp
140. ion index for the CSI reference signal Parameters CSIRSConfiguration5MNEM Number of the configuration index Range 0 to 31 Example CONF DL CSIR CI 12 Selects configuration index 12 for the CSI reference signal Manual operation See Configuration Index on page 54 CONFigure L TE DL CSIRs NAP Ports This command selects the number of antenna ports that transmit the CSI reference sig nal _ __ _ _ N User Manual 1173 9370 02 05 129 R amp S FSW K10x LTE Downlink Remote Control Se eS Remote Commands to Configure the Application Parameters lt Ports gt TX1 TX2 TX3 TX4 Example CONF DL CSIR NAP TX2 Selects 2 antenna ports for the CSI reference signal transmission Manual operation See Antenna Ports on page 54 CONFigure L TE DL CSIRs OPDSch State This command turns overwriting of PDSCH resource elements for UEs that do not con sider the CSI reference signal on and off Parameters State ON The CSI reference signal overwrite PDSCH resource elements OFF PDSCH resource elements remain Example CONF DL CSIR OPDS ON Overwrites PDSCH resource elements if necessary Manual operation See Overwrite PDSCH on page 55 CONFigure L TE DL CSIRs POWer Power This command defines the relative power of the CSI reference signal Parameters Power Default unit dB Example CONF DL CSIR POW 1 Defines a relative power of 1 dB for the CSI reference signal
141. ion is selected Manual operation See Configuring the Physical Layer Cell Identity on page 44 CONFigure L TE DL PLC PLID Identity This command defines the physical layer cell identity for ownlink signals Parameters Identity AUTO Automatic selection 0 2 Manual selection RST AUTO Example CONF DL PLC PLID 1 Selects physical layer cell ID 2 Manual operation See Configuring the Physical Layer Cell Identity on page 44 CONFigure LTE LDIRection Direction This command selects the link direction User Manual 1173 9370 02 05 120 R amp S FSW K10x LTE Downlink Remote Control Parameters lt Direction gt Example Manual operation Remote Commands to Configure the Application DL Downlink UL Uplink CONF LDIR DL option is configured to analyze downlink signals See Selecting the LTE Mode on page 41 FETCh PLC CIDGroup This command queries the cell identity group that has been detected Return values lt CidGroup gt Example Usage Manual operation FETCh PLC PLID The command returns 1 if no valid result has been detected yet Range 0 to 167 FETC PLC CIDG Returns the current cell identity group Query only See Configuring the Physical Layer Cell Identity on page 44 This command queries the cell identity that has been detected Return values lt Identity gt Example Usage Manual operation The command
142. ion of the R amp S FSW option FSx K100 PC enables testing of 3GPP LTE FDD signals on the downlink option FSx K101 PC enables testing of 3GPP LTE FDD signals on the uplink option FSx K102 PC enables testing of 3GPP LTE MIMO signals on the downlink option FSx K104 PC enables testing of 3GPP LTE TDD signals on the downlink option FSx K105 PC enables testing of 3GPP LTE TDD signals on the uplink FDD and TDD are duplexing methods e FDD mode uses different frequencies for the uplink and the downlink e TDD mode uses the same frequency for the uplink and the downlink Downlink DL and Uplink UL describe the transmission path e Downlink is the transmission path from the base station to the user equipment The physical layer mode for the downlink is always OFDMA e Uplink is the transmission path from the user equipment to the base station The physical layer mode for the uplink is always SC FDMA The application shows the currently selected LTE mode including the bandwidth in the channel bar Remote command CONFigure LTE LDIRection on page 120 CONFigure LTE DUPLexing on page 118 Using Test Models Test models are descriptions of LTE signals that you can use for particular test scenarios The Test Models dialog box contains functionality to select manage and create test models e Specification The Specification tab contains predefined test models as defined by 3GPP Predefined test models are supported in d
143. it shows several conventional result displays e Capture Memory e EVM vs Carrier e Power Spectrum I e LALLLLLLLLLLLLLLLLLLLLLLLLLLLLLLULULULLLM MJ User Manual 1173 9370 02 05 10 R amp S FSW K10x LTE Downlink Measurements and Result Displays e Result Summary e Constellation Diagram From that predefined state add and remove result displays as you like Performing measurements By default the application measures the signal continuously In Continuous Sweep mode the application captures and analyzes the data again and again The amount of data depends on the capture time measurements or the sweep time frequency Sweep measurements In Single Sweep mode the application stops measuring after it has captured the data once The amount of data again depends on the capture time or the sweep time For more information see the documentation of the R amp S FSW Selecting the operating mode The LTE application is supported by the Multi Standard Radio Analyzer MSRA Press the MODE key Select the Multi Standard Radio Analyzer Tab The R amp S FSW enters MSRA mode The MSRA mode supports all I Q measurements and result displays available with the LTE application except the frequency sweep measurements SEM and ACLR In MSRA operating mode only the MSRA Master actually captures data The application receives an extract of the captured data for analysis referred to as the
144. ital Baseband Interface B17 Maximizing Input status remote 136 Windows remote sssssseen 156 Digital I Q Measurement Input connection information 62 n Digital input allocation summary E Connection information 0000 42 62 Dit SUA c encender cm deiade det Duplicating capture buffer 2 tke ant Measurement channel remote 86 CCDF e channel decoder results 22 E channel flatniess nri attore tr estes 18 channel flatness difference 2 19 Error in Subframes ec eie tet 47 channel flatness 19 Evaluation methods COnstellatlori rtt ette etae 20 nicum 157 EVM vs carrier TENES EVM Calculation Method 73 EVMNSIRB 3 etri tirer eerie ben Eat 15 EVM vS CAME 13 EVM vs 6 16 EVM VSIRB obs ee 15 EVM VS Symbol rn er etas 14 User Manual 1173 9370 02 05 R amp S FSW K10x LTE Downlink Index freg erf vs SYMDON ueteres 16 e E E power spectrum power vs RB PDSCH
145. l subframes e TRACE2 Returns the minimum power found over all subframes If you are analyzing a partic ular subframe it returns nothing TRACE3 Returns the maximum power found over all subframes If you are analyzing a partic ular subframe it returns nothing 6 5 1 8 Channel Flatness Difference For the Channel Flatness Difference result display the command returns one value for each trace point lt relative power gt The unit is always dB The number of values depends on the selected LTE bandwidth The following parameters are supported TRACE1 Returns the average power over all subframes TRACE2 Returns the minimum power found over all subframes If you are analyzing a partic ular subframe it returns nothing e TRACE3 Returns the maximum power found over all subframes If you are analyzing a partic ular subframe it returns nothing 6 5 1 9 Channel Group Delay For the Channel Group Delay result display the command returns one value for each trace point lt group delay gt The unit is always ns The number of values depends on the selected LTE bandwidth The following parameters are supported e TRACE1 Returns the group delay 6 5 1 10 Constellation Diagram For the Constellation Diagram the command returns two values for each constellation point User Manual 1173 9370 02 05 98 R amp S FSW K10x LTE Downlink Remote Control mE eS SS SSS Remote Commands to Read Trace Data lt I SFO
146. lative power of the lower and upper adjacent and alternate channels e Limit Shows the limit of that channel if one is defined User Manual 1173 9370 02 05 28 R amp S FSW K10x LTE Downlink Measurements and Result Displays Frequency Sweep Measurements 2 Result Summary EUTRA EFE Square Channel Bandwidth Offset Power X1 Ref 9 015 MHz 7 82 dBm 7 82 dBm Lower Upper 46 34 dB 46 04 dB 60 57 dB 63 57 dB Remote command Selection CONF MEAS ACLR Reading results CALCulate lt n gt MARKer lt m gt FUNCtion POWer RESult CURRent on page 106 TRACe DATA Spectrum Mask Starts the Spectrum Emission Mask SEM result display The Spectrum Emission Mask measurement shows the quality of the measured signal by comparing the power values in the frequency range near the carrier against a spectral mask thatis defined by the 3GPP specifications In this way you can test the performance of the DUT and identify the emissions and their distance to the limit In the diagram the SEM is represented by a red line If any measured power levels are above that limit line the test fails If all power levels are inside the specified limits the test is passed The R amp S FSW puts a label to the limit line to indicate whether the limit check passed or failed The x axis represents the frequency with a frequency span that relates to the specified EUTRA LTE channel bandwidths On the y axis the power is plotted in dBm 1 Spe
147. led Done lt SampleRateType gt 0 Maximum sample rate is displayed 1 Current sample rate is displayed lt FullScaleLevel gt The level in dBm that should correspond to an I Q sample with the magnitude 1 if transferred from connected device If not available 9 97637 is returned Example INP DIQ CDEV Result 1 SMU200A 103634 Out A 70000000 100000000 Passed Not Started 0 0 Manual operation See Connected Instrument on page 62 INPut DIQ RANGe UPPer AUTO lt State gt If enabled the digital input full scale level is automatically set to the value provided by the connected device if available This command is only available if the optional Digital Baseband interface option R amp S FSW B17 is installed Parameters lt State gt ON OFF RST OFF Manual operation See Full Scale Level on page 62 INPut DIQ RANGe COUPling State If enabled the reference level for digital input is adjusted to the full scale level automat ically if the full scale level changes This command is only available if the optional Digital Baseband Interface R amp S FSW B17 is installed Parameters State ON OFF RST OFF Manual operation See Adjust Reference Level to Full Scale Level on page 62 M User Manual 1173 9370 02 05 137 R amp S FSW K10x LTE Downlink Remote Control pem L M M mex
148. lt subframe gt ALLoc lt allocation gt RBCount on page 125 Offset RB CONFigure LTE DL SUBFrame lt subframe gt ALLoc lt allocation gt RBOFfset on page 125 Power CONFigure LTE DL SUBFrame lt subframe gt ALLoc lt allocation gt POWer on page 124 PDSCH start offset CONFigure LTE DL SUBFrame lt subframe gt ALLoc lt allocation gt PSOFfset on page 125 4 2 1 4 Advanced Downlink Settings The downlink advanced signal characteristics contain settings that describe the detailed structure of a downlink LTE signal e Configuring the Synchronization 51 e Configuring the Reference 51 e Configuring the Positioning Reference 44480 52 e Configuring the Channel State Information Reference Signal 53 e Defining the PDSCH Resource Block Symbol 55 e Configuring this 2 tette 56 e Contiguning the ierant renean sang ee itte tueur eaten 57 e dent 57 e Configuring the PIDOGE senate ette ntt tt en diga ete ges rg patere dei nns 59 e Configuring Shared Channela etr ne te n et Leere d 60 R amp S FSW K10x LTE
149. mary on page 24 FETCh SUMMary QUADerror MAXimum FETCh SUMMary QUADerror MINimum FETCh SUMMary QUADerror AVERage This command queries the quadrature error Return values lt QuadError gt lt numeric value gt Minimum maximum or average quadrature error depending on the last command syntax element Default unit deg Example FETC SUMM QUAD Returns the current mean quadrature error in degrees Usage Query only ERREUR RA N User Manual 1173 9370 02 05 113 R amp S FSW K10x LTE Downlink Remote Control u RU XU VA DUO ER n Remote Commands to Read Numeric Results Manual operation See Result Summary on page 24 FETCh SUMMary RSTP MAXimum FETCh SUMMary RSTP MINimum FETCh SUMMary RSTP AVERage This command queries the RSTP as shown in the result summary Return values lt RSTP gt RSTP in dBm Example FETC SUMM RSTP Queries the RSTP Usage Query only Manual operation See Result Summary on page 24 FETCh SUMMary SERRor MAXimum FETCh SUMMary SERRor MINimum FETCh SUMMary SERRor AVERage This command queries the sampling error Return values lt SamplingError gt lt numeric value gt Minimum maximum or average sampling error depending on the last command syntax element Default unit ppm Example FETC SUMM SERR Returns the current mean sampling error in ppm Usage Query only Manual operation See Result Summary on page 24 FETCh SUMMary
150. me that has been analyzed lt EVM gt The unit depends on UNIT EVM The following parameters are supported e TRACE1 Frequency Error vs Symbol For the Frequency Error vs Symbol result display the command returns one value for each OFDM symbol that has been analyzed lt frequency error gt The unit is always Hz The following parameters are supported e 1 I User Manual 1173 9370 02 05 100 R amp S FSW K10x LTE Downlink Remote Control X gt 1 6 5 1 16 6 5 1 17 6 5 1 18 Remote Commands to Read Trace Data On Off Power For the On Off Power measurement the number and type of return values depend on the parameter e TRACE1 Returns the power for the Off power regions lt absolute power gt The unit is always dBm e TRACE2 Returns the power for the transient regions lt absolute power gt The unit is always dBm e LIST Returns the contents of the On Off Power table For each line it returns seven values lt off period start limit gt lt off period stop limit gt lt time at delta to limit gt lt absolute off power gt lt distance to limit gt lt falling transient period gt lt rising transient period gt The unit for the absolute off power gt is dBm The unit for the distance to limit is dB The unit for the transient periods is us All other values have the unit s Power Spectrum For the Power Spectr
151. modulation RS absolute accuracy E TM12 ACLR Operating band unwanted emissions E TM2 Total power dynamic range lower OFDM symbol power limit at min power EVM of single 640 PRB allocation at min power Frequency error at min power e E TM3 1 Output power dynamics Transmitted signal quality frequency error and EVM for 64QAM modulation at max power e E TM32 Transmitted signal quality Frequency error EVM for 16QAM modulation e 3 3 Transmitted signal quality Frequency error EVM for QPSK modulation Remote command MMEMory LOAD MOD DL on page 121 Channel Bandwidth Number of Resource Blocks Specifies the channel bandwidth and number of resource blocks RB The channel bandwidth and number of resource blocks RB are interdependent Cur rently the LTE standard recommends six bandwidths see table below The R amp S FSW also calculates the FFT size sampling rate occupied bandwidth and occupied carriers from the channel bandwidth Those are read only Channel Bandwidth MHz 1 4 3 5 10 15 20 Sample Rate MHz 1 92 3 84 7 68 15 36 30 72 30 72 FFT Size 128 256 512 1024 2048 2048 User Manual 1173 9370 02 05 42 R amp S FSW K10x LTE Downlink Configuration o_a na Configuring Measurements The application shows the currently selected LTE mode including the bandwidth in the channel bar Mode DLFDD 10MHz Remote command CONFigure LTE
152. name of the new window as a result Parameters lt Direction gt LEFT RIGHt ABOVe BELow lt WindowType gt Type of measurement window you want to add See LAYout ADD WINDow on page 157 for a list of available window types Return values lt NewWindowName gt When adding a new window the command returns its name by default the same as its number as a result Example LAY WIND1 ADD LEFT MTAB Result 2 Adds a new window named 2 with a marker table to the left of window 1 Usage Query only LAYout WINDow lt n gt IDENtify This command queries the name of a particular display window indicated by the lt n gt suffix Note to query the index of a particular window use the LAYout IDENtify WINDow command Return values lt WindowName gt String containing the name of a window In the default state the name of the window is its index Usage Query only LAY out WINDow lt n gt REMove This command removes the window specified by the suffix lt n gt from the display The result of this command is identical to the LAYout REMove WINDow command Usage Event User Manual 1173 9370 02 05 162 Working with Windows in the Display LAY out WINDow lt n gt REPLace lt WindowType gt This command changes the window type of an existing window specified by the suffix lt n gt The result of this command is identical to the LAYout REPLace WINDow command To add a
153. native KeywWOFdS iere tete Enea p KUNAN NNE ERATEN AAN KANEEN EENEN 83 SCP Parameters sisi xe xr ecce vee edu exu Ur 83 Remote Commands to Select the LTE 85 Performing Measurements esee 89 89 Measurement 91 Remote Commands to Read Trace 93 Using the TRACe DATA 93 Remote Commands to Read Measurement 105 Remote Commands to Read Numeric Results sees 107 Frame clc 108 e c 109 Marker lo CE 115 Remote Commands to Configure the 116 General eren 116 Configuring 117 Configuring Frequency Sweep 152 PMA YSIS eio etii 153 Evaluation Range eire eerie rar sa epe nt wa 153 YAKS SCAG E 154 Ressut SoNg
154. nd caeso 111 FEICh SUMMary EVM PCHannelpAVERage 2 cene ricorrere 111 FETGCb SUMMany EVMIPSIORAEMPOCIEIUEYI ice i auae ea enu usn ia entren inn 111 1 111 5 111 FETCHSUMMary FERRO MAXIMUM a ceinaren 111 I User Manual 1173 9370 02 05 109 R amp S FSW K10x LTE Downlink Remote Control Remote Commands to Read Numeric Results 5 412 42 4 4 4 006 rere nnn 111 FEICh SUMMarnyFERRemAVERaAge 2 trip eet e 111 5 1 2 1 2 2 02 a 112 FETCh SUMMary GIMBalance MINimum einen einn ne iine 112 112 FETCh SUMMary dQOFfset MAXImUm iirinn 112 FETGH SUMMaryIOOFISSE MIN rto me ee Ro Rae eene e pac eta 112 5 112 FEFCh SUMMany 5
155. nel For a list of available channel types see table 6 1 lt ChannelName2 gt String containing the name of the new channel Note If the specified name for a new channel already exists the default name extended by a sequential number is used for the new channel see table 6 1 T User Manual 1173 9370 02 05 86 R amp S FSW K10x LTE Downlink Remote Control Remote Commands to Select the LTE Application Example INST CRE REPL Spectrum2 IQ IQAnalyzer Replaces the channel named Spectrum2 by a new measurement channel of type IQ Analyzer named IQAnalyzer INSTrument DELete lt ChannelName gt This command deletes a measurement channel If you delete the last measurement channel the default Spectrum channel is activated Parameters lt ChannelName gt String containing the name of the channel you want to delete A measurement channel must exist in order to be able delete it Example INST DEL Spectrum4 Deletes the spectrum channel with the name Spectrum4 INSTrument LIST This command queries all active measurement channels This is useful in order to obtain the names of the existing measurement channels which are required in order to replace or delete the channels Return values lt ChannelType gt For each channel the command returns the channel type and lt ChannelName gt channel name see table 6 1 Tip to change the channel name use the INSTrument REName command
156. new window use the LAYout WINDow lt n gt ADD command Parameters lt WindowType gt Type of measurement window you want to replace another one with See LAYout ADD WINDow on page 157 fora list of available window types R amp S FSW K10x LTE Downlink List of Commands List of Commands ABOPD Uic IMEEM C Lu cua nora sanded LE EDU 89 CAEGulate sn z DELETamarkersm X nter ett ee reae e iet 115 lt gt lt gt 115 lt gt 11 lt gt 5 105 lt gt 11 lt gt 5 105 lt gt lt gt 106 gt gt 22 115 CALCulate lt n gt MARKer lt m gt Y CAL Culatesn gt UNIT POWOR rue diente aad scat etu oce ed EE su CONFigurel DE BW CP PPO CONFigure LME DL CONS LO Cation ii 154 CONFigure EME DLECSIRS C lis ra
157. ng the optimal timing position Remote command SENSe LTE Db DEMod EVMCalc on page 150 PDSCH Reference Data Selects the type of reference data to calculate the EVM for the PDSCH e Auto detect Automatically identifies the reference data for the PDSCH by analyzing the signal E TM Sets the PDSCH reference data to a fixed value of 0 This value is according to the test model definition N User Manual 1173 9370 02 05 73 R amp S FSW K10x LTE Downlink Configuration 4 3 4 3 1 Configuring Frequency Sweep Measurements To get valid results you have to use a DUT that transmits an all zero data vector This setting is a good way if you are expecting signals with a high EVM because the automatic detection will not be reliable in that case Remote command SENSe LTE Db DEMod PRData on page 150 Configuring Frequency Sweep Measurements After starting one of the frequency sweep measurements the application automatically loads the configuration required by measurements according to the 3GPP standard the spectral mask as defined in the 3GPP standard for SEM measurements and the channel configuration defined in the standard for the ACLR measurement If you need a different measurement configuration you can change all parameters as required Except for the dialog box decribed below the measurement configuration menus for the frequency sweep measurements are
158. nit The second part of the table shows results that refer to a specifc selection of the frame The statistic is always evaluated over the subframes The header row of the table contains information about the selection you have made like the subframe e EVMAII Shows the EVM for all resource elements in the analyzed frame FETCh SUMMary EVM ALL AVERage page 110 e EVM Phys Channel Shows the EVM for all physical channel resource elements in the analyzed frame FETCh SUMMary EVM PCHannel AVERage on page 111 e EVM Phys Signal Shows the EVM for all physical signal resource elements in the analyzed frame FETCh SUMMary EVM PSIGnal AVERage on page 111 e Frequency Error Shows the difference in the measured center frequency and the reference center frequency FETCh SUMMary FERRor AVERage on page 111 e Sampling Error Shows the difference in measured symbol clock and reference symbol clock relative to the system sampling rate FETCh SUMMary SERRor AVERage on page 114 e Q Offset Shows the power at spectral line O normalized to the total transmitted power FETCh SUMMary IQOFfset AVERage page 112 e QGain Imbalance Shows the logarithm of the gain ratio of the Q channel to the I channel FETCh SUMMary GIMBalance AVERage page 112 e Quadrature Error Shows the measure of the phase angle between Q channel and deviating from the ideal 90 degrees
159. nk Remote Control Remote Commands to Configure the Application Parameters lt Power gt lt numeric value gt RST 0 dB Default unit DB Example CONF DL SYNC PPOW 0 5 Sets a relative power of 0 5 dB Manual operation See P SYNC Relative Power on page 51 CONFigure L TE DL SYNC SPOWer lt Power gt This command defines the relative power of the S SYNC Parameters Power numeric value RST 0 dB Default unit DB Example CONF DL SYNC SPOW 0 5 Sets a relative power of 0 5 dB Manual operation See S SYNC Relative Power on page 51 Reference Signal TEEBEREFSIgIPOWNLE ecu deen ee 127 CONFigure L TE DL REFSig POWer Power This command defines the relative power of the reference signal Parameters Power numeric value RST 0 dB Default unit DB Example CONF DL REFS POW 1 2 Sets a relative power of 1 2 dB Manual operation See Rel Power Reference Signal on page 52 Positioning Reference Signal CONFigure L TEJ DL PRSS BW eee tette tette tet 128 CON Figure PETE amp amp E Em 128 GONFigure DEIPRSSINPRS x 128 GONFigure ionem rh peche RR 128 CONFigureLrETEEFDEPRSSISTAT 2 129 CONFigure TEE DEtSFNO m 129 Us
160. nstellation diagram for measurements on downlink signals Parameters lt Location gt AMD After the MIMO decoder BMD Before the MIMO decoder RST BMD Example CONF DL CONS LOC AMD Use data from after the MIMO decoder Manual operation See Evaluation Range for the Constellation Diagram on page 77 SENSe LTE SUBFrame SELect lt Subframe gt This command selects the subframe to be analyzed Parameters lt Subframe gt ALL lt numeric value gt ALL Select all subframes 0 39 Select a single subframe RST ALL Example SUBF SEL ALL Select all subframes for analysis Manual operation See Subframe Selection on page 76 6 8 2 Y Axis Scale DISPlay WINDow lt n gt TRACe Y SCALe AUTO ONCE eene 154 lt gt 5 1 1 1 155 DISPlay WINDow n TRACe Y SCALe MINimum cessere 155 DISPlay WINDow n TRACe Y SCALe AUTO ONCE Automatic scaling of the y axis is performed once then switched off again Usage SCPI confirmed Manual operation See Y Axis Scale on page 78 User Manual 1173 9370 02 05 154 R amp S FSW K10x LTE Downlink Remote Control 6 8 3 Analysis DISPlay WINDow lt n gt TRACe Y SCALe MAXimum Value This command defines the maximum value of the y axis for the selected result display Parame
161. nt settings the instrument status and any irregularities are indicated in the status bar beneath the diagram Furthermore the progress of the current operation is displayed in the status bar Regarding the synchronization state the application shows the following labels e Sync The synchronization was successful The status bar is green Sync Failed The synchronization was not successful The status bar is red There can be three different synchronization errors Sync Failed Cyclic Prefix The cyclic prefix correlation failed Sync Failed P SYNC The P SYNC correlation failed Sync Failed S SYNC The S SYNC correlation failed User Manual 1173 9370 02 05 9 R amp S FSW K10x LTE Downlink Measurements and Result Displays 2 Measurements and Result Displays The LTE measurement application measures and analyzes various aspects of an LTE signal It features several measurements and result displays Measurements represent different ways of processing the captured data during the digital signal processing Result displays are different representations of the measurement results They may be diagrams that show the results as a graph or tables that show the results as numbers Selecting measurements Press the MEAS key The application opens a dialog box that contains several buttons Each button represents a set of result displays that thematically belong together and that have a particular display con
162. ntur CONFigureEETETEDE CSIRS NAP tecto rre etre ter e mene na ere e D RU 5 5 2 CONFigure LTE DL CSIRS POW GF ii die siento aree ate CONEFigure LTE DE CSIRS S Clas iria actore e tun te eta tur pad ke pn pa RR iio CONFigure LTE DL CSIRs STATe CONFigure ETET DE CSUBframes oett entr ri te tr sea n n rri ge renda CONFig re ETE DEO YGDPLEOfIX iit ro e eher ruere etuer etu ae Peek tolus CONFigure ETETFDEMIMQ ASELSCIODn ssi iier rrt eer ERE ERE ERIS 122 CONFigure ETETDEMIMQO GONE IG tee etna ce netta a uta vau 122 CONFigureEETET DE MIMO CROSSstalk itte reed tai i ente rez e rh re e rg deze 149 _ 131 CONFigure E ETE DLE PBGEESTAT norit 131 CONEFigure LTE DE PCRICHIPOW Off ehe nee Ree nee menm edad 132 CONFigure LTE DL PCFich STAT _ 132 GONFigure ETEEDU PD
163. nual operation See Result Summary on page 24 FETCh SUMMary IQOFfset MAXimum FETCh SUMMary IQOFfset MINimum FETCh SUMMary IQOFfset AVERage This command queries the offset Return values lt lQOffset gt lt numeric value gt Minimum maximum or average offset depending on the last command syntax element Default unit dB Example FETC SUMM IQOF Returns the current IQ offset in dB Usage Query only Manual operation See Result Summary on page 24 N User Manual 1173 9370 02 05 112 R amp S FSW K10x LTE Downlink Remote Control ua aCe EE ed Remote Commands to Read Numeric Results FETCh SUMMary OSTP MAXimum FETCh SUMMary OSTP MINimum FETCh SUMMary OSTP AVERage This command queries the OSTP Return values lt OSTP gt lt numeric value gt Minimum maximum or average OSTP depending on the last command syntax element Default unit dBm Example FETC SUMM OSTP Returns the current average OSTP value Usage Query only Manual operation See Result Summary on page 24 FETCh SUMMary POWer MAXimum FETCh SUMMary POWer MINimum FETCh SUMMary POWer AVERage This command queries the total power Return values lt Power gt lt numeric value gt Minimum maximum or average power depending on the last command syntax element Default unit dBm Example FETC SUMM POW Returns the total power in dBm Usage Query only Manual operation See Result Sum
164. ocks On the y axis the EVM is plotted either in or in dB depending on the EVM Unit EVM vs RB 9 ei Avg 2 Min 3 Max 5 RB div Remote command LAY ADD 1 LEFT EVRP TRACe DATA Frequency Error vs Symbol Starts the Frequency Error vs Symbol result display This result display shows the Frequency Error on symbol level You can use it as a debugging technique to identify any frequency errors within symbols The result is an average over all subcarriers The x axis represents the OFDM symbols with each symbol represented by a dot on the line The number of displayed symbols depends on the Subframe Selection and the length of the cyclic prefix Any missing connections from one dot to another mean that the R amp S FSW could not determine the frequency error for that symbol On the y axis the frequency error is plotted in Hz 7 Freq Error vs Symbol Hz 10 Symb 139 Symb Remote command LAY ADD 1 LEFT FEVS TRACe DATA EVM vs Subframe Starts the EVM vs Subframe result display e LALLLLLLLLLLLLLLLLLLLLLLLLAALAAAALLLTLLLLUILI User Manual 1173 9370 02 05 16 R amp S FSW K10x LTE Downlink Measurements and Result Displays Measurements This result display shows the Error Vector Magnitude EVM for each subframe You can use it as a debugging technique to identify a subframe whose EVM is too high The result is an average over all subcarriers and symbols of a specific subf
165. of PHICH groups in a downlink subframe The standard specifies several values for N that you can select from the dropdown menu e M User Manual 1173 9370 02 05 58 R amp S FSW K10x LTE Downlink Configuration Configuring Measurements If you need a customized configuration you can set the number of PHICH groups in a subframe by selecting the Custom menu item and set a number of PHICH groups directly with PHICH Number of Groups Remote command CONFigure LTE DL PHICh NGParameter on page 133 PHICH Number of Groups Sets the number of PHICH groups contained in a subframe To select a number of groups you have to set the PHICH N_g to Custom Remote command CONFigure LTE DL PHICh NOGRoups on page 134 PHICH Rel Power Defines the power of the PHICH relative to the reference signal Remote command CONFigure LTE DL PHICh POWer on page 134 Configuring the PDCCH The physical downlink control channel PDCCH carries the downlink control information The PDCCH is always present You can define several specific parameters for the PDCCH The PDCCH is part of the control channel The control channel settings are part of the Advanced Settings tab of the Signal Description dialog box Advanced Settings Control Channel POCCH Format MAuto of PDCCHs PDCCH Rel Power 0 0 dB PD
166. ommand defines the total attenuation for RF input If you set the attenuation manually it is no longer coupled to the reference level but the reference level is coupled to the attenuation Thus if the current reference level is not compatible with an attenuation that has been set manually the command also adjusts the reference level RU N User Manual 1173 9370 02 05 143 R amp S FSW K10x LTE Downlink Remote Control pc S c M XE M M exe Remote Commands to Configure the Application Parameters lt Attenuation gt Range see data sheet Increment 5 dB RST 10 dB AUTO is set to ON Example INP ATT 30dB Defines a 30 dB attenuation and decouples the attenuation from the reference level Usage SCPI confirmed Manual operation See Attenuating the Signal on page 66 INPut ATTenuation AUTO lt State gt This command couples or decouples the attenuation to the reference level Thus when the reference level is changed the R amp S FSW determines the signal level for optimal internal data processing and sets the required attenuation accordingly Parameters lt State gt OFF 0 1 RST 1 Example INP ATT AUTO ON Couples the attenuation to the reference level Usage SCPI confirmed Manual operation See Attenuating the Signal on page 66 INPut COUPling lt CouplingType gt This command selects the coupling ty
167. operation See Timing on page 71 Configuring Frequency Sweep Measurements Please refer to the documentation of the R amp S FSW base unit for a comprehensive list and description of remote commands necessary to configure and perform frequency sweep measurements ACLR and SEM All commands specific to the LTE application are listed below 152 SENS POWO SEM CATO 153 22 22 2 naiiai a aiaa iiaia 153 SENSe POWer ACHannel AACHannel lt Channel gt This command selects the assumed adjacent channel carrier for ACLR measurements Parameters lt Channel gt EUTRA Selects an EUTRA signal of the same bandwidth like the TX chan nel as assumed adjacent channel carrier UTRA128 Selects UTRA signal with a bandwidth of 1 28MHz as assumed adjacent channel carrier UTRA384 Selects UTRA signal with a bandwidth of 3 84MHz as assumed adjacent channel carrier UTRA768 Selects an UTRA signal with a bandwidth of 7 68MHz as assumed adjacent channel carrier RST EUTRA Example POW ACH AACH UTRA384 Selects an UTRA signal with a bandwidth of 3 84MHz as assumed adjacent channel carrier Manual operation See Assumed Adjacent Channel Carrier on page 74 EEUU RE a User Manual 1173 9370 02 05 152 R amp S
168. ore resource allocations The R amp S FSW shows the contents for each subframe in the configuration table In the configuration table each row corresponds to one allocation ID Code N RNTI Word 1 1 64QAM s 1 1 64QAM E Enhanced VRB Number Offset Rho A Settings GAP of RBs RB Power dB 0 12 dB Modulation Conflict 1 1 1 1 12 dB 2 1 1 64QAM m 0 1 4 12 dB 3 1 1 64QAM m 1 6 12 dB 4 1 1 64QAM 0 2 7 12 dB 5 1 1 64QAM 2 9 12 dB 6 1 1 64QAM 0 3 13 12 dB If there are any errors or conflicts between allocations in one or more subframes the application shows the corrupt subframe in the Error in Subframes field which appears below the table and is highlighted red if an error occurs In addition it shows the conflicting rows of the configuration table It does not show the kind of error Code ID Enhanced VRB Number Offset Rho A RNTI Word Modulation Settings GAP of RBS RB Power dB Conflict 0 1 1 64QAM ES 1 0 12 d 1 1 1 64QAM E 0 1 0 12 d 2 1 1 64QAM m 0 1 1 12 d 3 1 1 64QAM 1 2 12 db 1 1 1 64QAM 0 n 12 db ExceedsBW Before you start to work on the contents of each subframe you should define the number of subframes you want to customize with the Configurable Subframes parameter The application supports the configuration of up to 40 subframes Then you can select a particular subframe that you want to customize in the Selected Subframe field Enter the n
169. ormat for the data transmission between the LTE measurement application and the remote client Supported formats are ASCII or REAL32 Parameters lt Format gt ASCii REAL RST ASCii Example FORM REAL The software will send binary data in Real32 data format 6 6 Remote Commands to Read Numeric Results e Frame RESUS 108 e Result Tor SelecHoll ueo eed 109 6 Marker Table ee Eee EE ce ueni dense bu 115 a User Manual 1173 9370 02 05 107 R amp S FSW K10x LTE Downlink Remote Control 6 6 1 Remote Commands to Read Numeric Results Frame Results FETCH SUMMary EVM DSQOP MAXIMU 25 108 08 108 FEICh SUMMan EVMEIDSOPDAVERagel uana a tatit e 108 FETGh SUMMary EVM DSST MAXIIIUmm iiicici coe eed a a 108 22 225 beca te oen 108 68 222 440 tette ten 108 7 22 2 runner etn ER ra aaa 109 FETChSUMMary EVMIDSSFP MITNIIUITIP a
170. ote Commands to Configure the Application Example CONF DL SUBF2 ALL5 UEID 5 Assigns the ID 5 to allocation 5 in subframe 2 CONFigure LTE DL SUBFrame lt subframe gt ALLoc lt allocation gt CW lt Cwnum gt MODulation lt Modulation gt This command selects the modulation of an allocation in a downlink subframe Suffix lt Cwnum gt 1 n Selects the codeword Parameters Modulation QPSK QPSK modulation QAM16 16QAM modulation QAM64 64QAM modulation RST QPSK Example CONF DL SUBF2 ALL5 CW2 MOD QAM64 Selects a 64QAM modulation for the second codeword of alloca tion 5 in subframe 2 Manual operation See Configuring PDSCH Allocations on page 48 Synchronization Signal CONFigurep E TEERDESSYNGOANTBES tricot een nei dnt sitive cidade ed 126 CONEIgurebEEREEDUSYNGPPONIBE a aaa cuu Ve catena 126 GONFigure E TEEDE SYNGOSPONWBLF 127 CONFigure LTE DL SYNC ANTenna Antenna This command selects the antenna that transmits the P SYNC and the S SYNC Parameters Antenna ANT1 ANT2 ANT3 ANTA ALL NONE RST ALL Example CONF DL SYNC ANT ALL All antennas are used to transmit the P SYNC and S SYNC Manual operation See P S SYNC Tx Antenna on page 51 CONFigure L TE DL SYNC PPOWer Power This command defines the relative power of the P SYNC EE N User Manual 1173 9370 02 05 126 R amp S FSW K10x LTE Downli
171. ower Defines the power of the PBCH relative to the reference signal Remote command CONFigure LTE DL PBCH POWer on page 131 Configuring the PCFICH The physical control format indicator channel PCFICH carries information about the format of the PDCCH You can include or exclude the PCFICH in the test setup and define the relative power of this channel The PCFICH is part of the control channel The control channel settings are part of the Advanced Settings tab of the Signal Description dialog box Advanced Settings PCFICH Present Ott PCFICH Rel Control Channel PCFICH Present Includes or excludes the PCFICH from the test setup Remote command CONFigure LTE DL PCFich STAT on page 132 PCFICH Relative Power Defines the power of the PCFICH relative to the reference signal Remote command CONFigure LTE DL PCFich POWer on page 132 Configuring the PHICH The physical hybrid ARQ indicator channel PHICH contains the hybrid ARQ indicator The hybrid ARQ indicator contains the acknowledgement negative acknowledgments for uplink blocks You can set several specific parameters for the PHICH The PHICH is part of the control channel The control channel settings are part of the Advanced Settings tab of the Signal Description dialog box emm a User Manual 1173 9370 02 05 57 R amp S FSW K10x LTE Downlink Configuration Configuring Measurements Turning off the PHICH If
172. ownlink mode e User Defined The User Defined tab contains functionality to manage custom test models Custom test models are supported in downlink and uplink mode To create a custom test model describe a signal as required and then save it via the Test Models dialog box Here you can also restore custom test models and delete ones you do not need anymore Predefined test models E TM In case of downlink signals the 3GPP standard TS 36 141 already defines several EUTRA test models E TM for specific test scenarios These test models are split into ERES RU e I eeALLLLLLLLLLLLLLLLLLLLLLLLLMLLLL J User Manual 1173 9370 02 05 41 R amp S FSW K10x LTE Downlink Configuration Se a Configuring Measurements three main groups E TM1 E TM2 and E TM3 and are defined by the following charac teristics e Single antenna port single code word single layer and no precoding duration of one frame normal cyclic prefix localized virtual resource blocks no intra subframe hopping for PDSCH UE specific reference signal not used The data content of the physical channels and signals are defined in the 3GPP standard Each E TM is defined for for all bandwidths defined in the standard 1 4 MHz 3 MHz 5 MHz 10 MHz 15 MHz 20 MHz Table 4 1 Test scenarios for E TM as defined by 3GPP e E TM1 1 BS output power Unwanted emissions Transmitter inter
173. pe EFE ehe ao Ero seis 86 INS Trument D IE zii 87 INSTrutmerntllIS T coe reset rer e eda reet et e eden re ra t ote 87 INS Trumen E NAI epe 88 RF UI SS EL CCE 88 LAYOUEADDEWINBOW repa eres xr Aunties 157 LAYout CATalog E WINDOW iecit ote re ttn tete Er Fa e keen acabe eek porke rco eg aede be aera Eye coeds 159 EAYoUEIDENtIEWINDONW io criteri rt Rp te vetere eod orti euet vn ee E Ra E E era e dos 159 12 20020022 00000000 160 EAYOUtREPLEaceEWINDOW eiecit Mr edes 160 LAYout SPLitter LAYGUtWINDowsr ADDS eee rete retro dre eo Ded ree ee ee Yee e gn 162 lt gt 2 0 2 21 21 0 00000001000 162 EAYOUtWINDoOowWsrn REMOVG 162 LEAYout WINDowsn BREPL ace 163 MMEMOrny EOAD TMOD DBL E ig eer ee re v e ERE ea ebd 121 5 5 2 0
174. pe of the RF input Parameters lt CouplingType gt AC AC coupling DC DC coupling RST AC Example INP COUP DC Usage SCPI confirmed Manual operation See Input Coupling on page 67 INPut GAIN VALue lt Gain gt This command selects the preamplification level if the preamplifier is activated INP GAIN STAT ON see INPut GAIN STATe on page 145 The command requires option R amp S FSW B24 A a User Manual 1173 9370 02 05 144 R amp S FSW K10x LTE Downlink Remote Control Parameters lt Gain gt Example Usage Manual operation Remote Commands to Configure the Application 15 dB 30 dB The availability of preamplification levels depends on the R amp S FSW model R amp S FSWS8 15dB and 30 dB R amp S FSW13 15dB and 30 dB R amp S FSW26 30 dB All other values are rounded to the nearest of these two RST OFF INP GAIN VAL 30 Switches on 30 dB preamplification SCPI confirmed See Preamplifier option B24 on page 67 INPut GAIN STATe State This command turns the preamplifier on and off The command requires option R amp S FSW B24 Parameters State Example Usage Manual operation ON OFF RST OFF INP GAIN STAT ON Switches on 30 dB preamplification SCPI confirmed See Preamplifier option B24 on page 67 INPut IMPedance Impedance This command selects the nominal input impedance of the RF input 75 should be selected
175. positioning reference signal on and off Remote command CONFigure LTE DL PRSS STATe on page 129 Bandwidth Defines the bandwidth and thus the number of resource blocks the positioning reference signal occupies User Manual 1173 9370 02 05 52 R amp S FSW K10x LTE Downlink Configuration eee SS a ee Configuring Measurements Note that the PRS bandwidth has to be smaller than the channel bandwidth Remote command CONFigure LTE DL PRSS BW on page 128 Configuration Index Defines the PRS Configuration Index Ipps as defined in 3GPP TS 36 211 table 6 10 4 3 1 Remote command CONFigure LTE DL PRSS CI on page 128 Num Subframes N PRS Defines the number of consecutive DL subframes in that PRS are transmitted Remote command CONFigure LTE DL PRSS NPRS on page 128 Relative Power Positioning Reference Signal Defines the power of a PRS resource element in relation to the power of a common reference signal resource element Remote command CONFigure LTE DL PRSS POWer on page 128 Frame Number Offset Defines the system frame number of the current frame that you want to analyze Because the positioning reference signal and the CSI reference signal usually have a periodicity of several frames for some reference signal configurations is it necessary to change the expected system frame number of the frame to be analyzed Note that if you define the frame number offset for either r
176. r is not available The result display is updated as soon as you make the changes Note that the constellation selection is applied to all windows in split screen mode if the windows contain constellation diagrams Remote command Location CONFigure LTE DL CONS LOCation on page 154 __ _ _ _ __ LLL LLLLLLLLLLLLLLLLLLLLLLLLLLULLUUUM User Manual 1173 9370 02 05 77 R amp S FSW K10x LTE Downlink Analysis 5 1 2 Analyzing Measurements Scale WPS SCANS cece 78 Y Axis Scale The y axis scaling determines the vertical resolution of the measurement results The scaling you select always applies to the currently active screen and the corresponding result display Usually the best way to view the results is if they fit ideally in the diagram area in order to view the complete trace This is the way the application scales the y axis if you are using the automatic scale function But it may become necessary to see a more detailed version of the results In that case turn on fixed scaling for the y axis by defining the minimum and maximum values dis played on the vertical axis Possible values and units depend on the result display you want to adjust the scale of Tip Alternatively you can scale the windows in the Auto Set menu In addition to scaling the window currently in focus Auto Scale Window there you can scale all windows at the sam
177. r the PCFICH The results are made up out of two parameters lt subframe gt number of symbols for PDCCH gt The values have no unit PHICH Returns the results for the PHICH The results are made up out of three values for each line of the table lt subframe gt ACK NACK relative power The unit for relative power is dB All other values have no unit The lt ACK NACK gt is encoded For the code assignment see chapter 6 5 1 21 Return Value Codes on page 102 PDCCH Returns the results for the PDCCH The results are made up out of seven values for each line of the table lt subframe gt lt RNTI gt DCI format PDCCH format lt CCE offset 4 of transmitted bits stream of binary numbers The values have no unit The stream of binary numbers isa list of binary numbers separated by comma The DCI format and PDCCH format are encoded For the code assignment see chapter 6 5 1 21 Return Value Codes on page 102 6 5 1 7 Channel Flatness For the Channel Flatness result display the command returns one value for each trace point relative power 11 1 1L L A LLLLLLLLLLLULULLLULM User Manual 1173 9370 02 05 97 R amp S FSW K10x LTE Downlink Remote Control eee SS a E Remote Commands to Read Trace Data The unit is always dB The following parameters are supported TRACE1 Returns the average power over al
178. races One trace shows the subframe with the minimum level characteristics the second trace shows the sub frame with the maximum level characteristics and the third subframe shows the averaged level characteristics of all subframes A cR ar s sepa ne PS Oe eg Ao aad 21 Avg e2Min 3 Max e PK peak value e AV average value e MI minimum value If you select a specific subframe the application shows one trace This trace contains the results for that subframe only Remote command SENSe LTE SUBFrame SELect on page 154 Evaluation Range for the Constellation Diagram The Evaluation Range dialog box defines the type of constellation points that are dis played in the Constellation Diagram By default the R amp S FSW displays all constellation points of the data that have been eval uated However you can filter the results by several aspects e Modulation Filters the results to include only the selected type of modulation Allocation Filters the results to include only a particular type of allocation Symbol Filters the results to include only a particular OFDM symbol e Carrier Filters the results to include only a particular subcarrier e Location Note that the PHICH is CDMA encoded Thus the constellation points for the PHICH are either created before or after CDMA encoding If you have selected After MIMO CDMA Decoder filtering by Symbol and Car rie
179. ral MINiIMUM ccccecceeceeereeeeeeceseeeseeneeneceeseeeeaeeeecaeeeaeseeseseaeeeneeaeeneeentenas 111 FETCh SUMMary EVM PSIGnal AVERage essen nennen 111 FETCh SUMMary EVM ALL MAXimum esses nennen enne nennen nene 110 FEICh SUMMary EVM ALLTMINimbUltTI 2 iced cet eer aes b ede eae tecta d 110 FETCh SUMMary EVM ALL AVERage 110 FEICIiSUMMary FERROr MAXimmtUtT iret ciet resi dede te MEE E 111 FETCh SUMMary FERRor MINimum esses 111 FETCHh SUMMary FERROE AVERadge 1 ertt metet Ree td N ake d 111 50 112 T User Manual 1173 9370 02 05 165 R amp S FSW K10x LTE Downlink List of Commands FETCh SUMMary GlIMBalance MlINimum sees 112 FETCh SUMMary GIMBalance AVERage sssssssssssssssesee eene eene enne nennen een rtr 112 112 FEICh SUMMary IQOFfSetMINIitmUtY uiii tette ette d re pee De YR De d e Rege 112 FETCh SUMMary IQOFfset AVERage essen 112 EETCh SUMMary OSTP MAXImU lTi
180. rame The x axis represents the subframes with the number of displayed subframes being 10 On the y axis the EVM is plotted either in or in dB depending on the EVM Unit SEVM vs SubFrame Remote command LAY ADD 1 LEFT EVSU TRACe DATA Power Spectrum Starts the Power Spectrum result display This result display shows the power density of the complete capture buffer in dBm Hz The displayed bandwidth depends on bandwidth or number of resource blocks you have set For more information see Channel Bandwidth Number of Resource Blocks on page 42 The x axis represents the frequency On the y axis the power level is plotted 1 Power Spectrum dBm Hz Start 7 68 MHz 1 54 MHz Stop 7 68 Mhz Remote command LAY ADD 27 LEFT PSPE TRACe DATA Power vs Resource Block PDSCH Starts the Power vs Resource Block PDSCH result display This result display shows the power of the physical downlink shared channel per resource block User Manual 1173 9370 02 05 17 R amp S FSW K10x LTE Downlink Measurements and Result Displays Measurements By default three traces are shown One trace shows the average power The second and the third trace show the minimum and maximum powers respectively You can select to display the power for a specific subframe in the Subframe Selection dialog box In that case the application shows the powers of that subframe only The x axis represents the resource blocks The di
181. rame it returns nothing 6 5 1 20 Spectrum Emission Mask For the SEM measurement the number and type of returns values depend on the param eter e TRACE1 Returns one value for each trace point lt absolute power gt The unit is always dBm e LIST Returns the contents of the SEM table For every frequency in the spectrum emission mask it returns 11 values lt index gt lt start frequency in Hz gt lt stop frequency in Hz gt lt RBW in Hz gt lt limit fail frequency in Hz gt lt absolute power in dBm gt lt relative power in dBc gt lt limit distance in dB gt lt limit check result gt lt reserved gt lt reserved gt The lt limit check result gt is either a 0 for PASS or a 1 for FAIL 6 5 1 21 Return Value Codes This chapter contains a list for encoded return values lt ACK NACK gt The range is 1 1 e 1 ACK e 0 User Manual 1173 9370 02 05 102 R amp S FSW K10x LTE Downlink Remote Control pem O D MH oCC OAAXXX T 1 Remote Commands to Read Trace Data e 1 DTX allocation ID Represents the allocation ID The range is 13 65535 e 0 65535 PDSCH e 1 Invalid e 2 All 3 e 4 5 5 5 PILOTS_ANT1 6 PILOTS_ANT2 7 PILOTS ANT3 8 PILOTS ANTA e 9 PCFICH e 10 PHICH e 11 PDCCH e 12 PBCH e 13 lt c
182. re eee ede trente dede eee aede Fee da 147 SSSR User Manual 1173 9370 02 05 142 R amp S FSW K10x LTE Downlink Remote Control pm X M M exl Remote Commands to Configure the Application CALCulate lt n gt UNIT POWer Unit This command selects the unit of the y axis The unit applies to all measurement windows Parameters Unit DBM V A W DBPW WATT DBUV DBMV VOLT DBUA AMPere RST dBm Example CALC UNIT POW DBM Sets the power unit to dBm Manual operation See Defining a Reference Level on page 65 DISPlay WINDow lt n gt TRACe Y SCALe RLEVel lt ReferenceLevel gt This command defines the reference level With a reference level offset 0 the value range of the reference level is modified by the offset Parameters lt ReferenceLevel gt The unit is variable Range see datasheet RST 0 dBm Example DISP TRAC Y RLEV 60dBm Usage SCPI confirmed Manual operation See Defining a Reference Level on page 65 DISPlay WINDow lt n gt TRACe Y SCALe RLEVel OFFSet Offset This command defines a reference level offset Parameters Offset Range 200 dB to 200 dB RST OdB Example DISP TRAC Y RLEV OFFS 10dB Manual operation See Defining a Reference Level on page 65 INPut ATTenuation lt Attenuation gt This c
183. rearrange the screen layout for a measurement channel as you do using the SmartGrid in manual operation Since the available evaluation types depend on the selected application some parameters for the following commands also depend on the selected measurement channel LAYOUtAD DO WINDOW res 157 LAY OULCA TIGO WINDOW 159 LAYOUtIDENUNME WINDOW tenete Exe neu kb e annii adeniin eR etae 159 mailer 160 LAYoutREP Lace WINDOW irata een dE dp 160 LAYOUESPLIGE dera eser 160 LAV GUE WINDOWS ADD e aor ER Dex de 162 LAYoutWINDOwWemIDENUS A ev RD eene 162 LAY out WINDOW N BEMONWS eio rone e Fett nene nata ec oho ako 162 lt gt 163 LAYout ADD WINDow lt WindowName gt lt Direction gt lt WindowT ype gt This command adds a window to the display This command is always used as a query so that you immediately obtain the name of the new window as a result To replace an existing window use the LAYout REPLace WINDow command Parameters lt WindowName gt String containing the name of the
184. requency sweep measurements are not available in MSRA operating mode For details on the MSRA operating mode see the R amp S FSW MSRA User Manual Channel bar information In the LTE measurement application the R amp S FSW shows the following settings Table 1 1 Information displayed in the channel bar in the LTE measurement application Ref Level Reference level Att Mechanical and electronic RF attenuation Freq Frequency Mode LTE standard User Manual 1173 9370 02 05 8 R amp S FSW K10x LTE Downlink Welcome to the LTE Measurement Application Understanding the Display Information Cell ID Cell identity Capture Time Signal length that has been captured Frame Count Number of frames that have been captured Selected Antenna Number of antenna currently analyzed Selected Subframe Subframe considered in the signal analysis In addition the channel bar also displays information on instrument settings that affect the measurement results even though this is not immediately apparent from the display of the measured values e g transducer or trigger settings This information is displayed only when applicable for the current measurement For details see the R amp S FSW Getting Started manual Window title bar information The information in the window title bar depends on the result display The Constellation Diagram for example shows the number of points that have been measured Status bar information Global instrume
185. results are used to equalize the samples of the reference path prior to symbol decision Based on the decided data symbols a fine channel estimation is optimally per formed and then used to equalize the partially compensated samples of the measurement path 3 3 3 Analysis The analysis block of the EUTRA LTE downlink measurement application allows to com pute a variety of measurement variables EVM The error vector magnitude EVM measurement results EVM PDSCH QPSK 16 QAM 64 QAM are calculated according to the specification in 3GPP TS 36 211 All other EVM measurement results are calculated according to 3 2 on subcarrier k at OFDM symbol where is the boosting factor Since the average power of all possible constellations is 1 when no boosting is applied the equation can be rewritten as m z 1 b 3 3 The average EVM of all data subcarriers is then e LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLUILUUUEZEZZA User Manual 1173 9370 02 05 34 R amp S FSW K10x LTE Downlink Measurement Basics Performing Time Alignment Measurements EVM gata EM i REdata Mi 3 4 The number of resource elements taken into account is denoted by Npe aata imbalance The imbalance can be written as re r8 i6 70560 3 5 where s t is the transmit signal r t is the received signal and and are the weighting factors We define that 1 1 and
186. s Automatic refresh of preview and visualization in dialog boxes after configuration changes The R amp S FSW supports you in finding the correct measurement settings quickly and easily after each change in settings in dialog boxes the preview and visualization areas are updated immediately and automatically to reflect the changes Thus you can see if the setting is appropriate or not before accepting the changes Unavailable hardkeys Note that the SPAN BW TRACE LINES and MKR FUNC keys have no contents and no function in the LTE application e Coniguraton dotate ai deg a pL 38 e Configuring WO MeasHrefments cinere rre eri uite aie 40 e Configuring Frequency Sweep 2222212 74 4 1 Configuration Overview Throughout the measurement channel configuration an overview of the most important currently defined settings is provided in the Overview The Overview is displayed when you select the Overview icon which is available at the bottom of all softkey menus Mode mimo Input Boosting Est Bandwidth Frequency Capture Lengt Channel Est Ref Level Source Phase Tracking POSCH Damod Att Offset Time Tracking E5 A Signal Description Input Frontend Trig Sig Capture Estimation Tracking Capture Butter 1 fs Demodulation Evaluation Range Display Config M ar tal EVM unit Sie 1 Capture Buffer U
187. s as a function of the number of antennas antennas 0 969 dB If you select p_B p_A 1 the ratio is always 1 regardless of the number of antennas Remote command CONFigure LTE DL PDSCh PB on page 135 4 2 2 Input Frontend e Selecting the Input and Output 60 e Defining the 22 Ene Motu Erde d 64 e Defining Level Characteristics eie eciam rena eeepc 65 4 2 2 1 Selecting the Input and Output Source The application supports several input sources and outputs For a comprehensive description of the supported inputs and outputs please refer also to the documentation of the R amp S FSW base unit PRE apos 61 e Digital VO di eb 61 Analog Basebatid edited nad ER ge d d nna De ERR 63 User Manual 1173 9370 02 05 60 R amp S FSW K10x LTE Downlink Configuration ese SS a ee gm Configuring Measurements RF Input Functions to configure the RF input described elsewhere e Input Coupling on page 67 e Impedance on page 67 GHZ 61 YIGSPEIeSSele CtP 61 High Pass Filter 1 3 GHz Activates an additional internal high pass filter for RF input signals from 1 GHz to 3 GHz This filter is used to remove the harmoni
188. s contains settings to describe general physical characteristics of the signal you are measuring Press the MEAS CONFIG key gt Press the Signal Description softkey The application opens the Signal Description dialog box For more information on the LTE Mode Test Model Channel Bandwidth and Cyclic Prefix see Selecting the LTE Mode on page 41 Using Test Models on page 41 Channel Bandwidth Number of Resource Blocks on page 42 and Cyclic Prefix on page 43 Category Selects the type category and option of the limit defintions for SEM measurements The software supports limit defintions for the following types of base stations e Wide areas base stations Category A and B e Local Area base stations e Home base stations Category A and B are defined in ITU R recommendation SM 329 For Category B oper ating band unwanted emissions there are two options for the limits that may be applied regionally Opt1 and Opt2 The type and category you should use for the measurement depends on the category and option that the base station you are testing supports For Home Area base stations you can define an additional Aggregated Max Power for all antenna ports of a home area base station The aggregated maximum power is the aggregated power of all antenna ports and has an effect on the shape of the SEM Remote command SENSe POWer SEM CATegory on page 153 SENSe POWer SEM CHBS AMPower page 153
189. sampled to the sample rate of the application If the center frequency is not 0 the input signal is down converted first Low IF I Q Only Low IF Q The input signal at the BASEBAND INPUT Q connector is filtered and resampled to the sample rate of the application If the center frequency is not 0 the input signal is down converted first Low IF Q Remote command INPut IQ TYPE on page 140 TT User Manual 1173 9370 02 05 63 R amp S FSW K10x LTE Downlink Configuration mea c SSS 5 4 2 2 2 Configuring Measurements Input configuration Defines whether the input is provided as a differential signal via all 4 Analog Baseband connectors or as a plain signal via 2 simple ended lines Note Both single ended and differential probes are supported as input however since only one connector is occupied by a probe the Single ended setting must be used for all probes Differential 1 and inverse data Single Ended Q data only Remote command INPut IQ BALanced STATe on page 139 Swap Activates or deactivates the inverted modulation If the and Q parts of the signal from the DUT are interchanged the R amp S FSW can do the same to compensate for it On and Q signals are interchanged Inverted sideband Q j l Off and Q signals are not interchanged Normal sideband I j Q Remote command SENSe SWAPiq on
190. se the same phase rotation for each subcarrier while the rotation due to the SFO depends linearly on the subcarrier index A linear phase increase in symbol direction can be observed for the residual CFO as well as for the SFO The results of the tracking estimation block are used to compensate the samples T User Manual 1173 9370 02 05 33 R amp S FSW K10x LTE Downlink Measurement Basics eee ee X C A t The LTE Downlink Analysis Measurement Application Whereas a full compensation is performed in the reference path the signal impairments that are of interest to the user are left uncompensated in the measurement path After having decided the data symbols in the reference path an additional phase tracking can be utilized to refine the CPE estimation 3 3 2 Channel Estimation and Equalizitaion As shown in figure 3 1 there is one coarse and one fine channel estimation block The reference signal based coarse estimation is tapped behind the CFO compensation block SFO compensation can optionally be enabled of the reference path The coarse esti mation block uses the reference signal symbols to determine estimates of the channel transfer function by interpolation in both time and frequency direction A special channel estimation 8 as defined in 3GPP TS 36 211 is additionally generated The coarse estimation
191. selected subframe depends on your selection The x axis represents the frequency On the y axis the channel flatness is plotted in dB Channel Flatness dB ei Avg 2 Min amp 3 Max Start 7 68 MHz 1 54 MHz Stop 7 68 MHz Remote command LAY ADD 1 LEFT FLAT TRACe DATA Channel Group Delay Starts the Channel Group Delay result display This result display shows the group delay of each subcarrier The currently selected subframe depends on your selection The x axis represents the frequency On the y axis the group delay is plotted in ns 4 Group Delay ns Start 7 68 MHz 1 54 MHz Stop 7 68 MHz Remote command LAY ADD 1 LEFT GDEL TRACe DATA Channel Flatness Difference Starts the Channel Flatness Difference result display This result display shows the level difference in the spectrum flatness result between two adjacent physical subcarriers The currently selected subframe depends on your selection The x axis represents the frequency On the y axis the power is plotted in dB User Manual 1173 9370 02 05 19 R amp S FSW K10x LTE Downlink Measurements and Result Displays Measurements 8 Flatness Difference dB Avg e2 Min 93 Start 7 68 MHz 1 54 MHz Stop 7 68 MHz Remote command LAY ADD 1 LEFT F DIF TRACe DATA Constellation Diagram Starts the Constellation Diagram result display This result display shows
192. ser Manual 1173 9370 02 05 38 R amp S FSW K10x LTE Downlink Configuration SS a NC MO eS Configuration Overview In addition to the main measurement settings the Overview provides quick access to the main settings dialog boxes The individual configuration steps are displayed in the order of the data flow Thus you can easily configure an entire measurement channel from input over processing to output and analysis by stepping through the dialog boxes as indicated in the Overview In particular the Overview provides quick access to the following configuration dialog boxes listed in the recommended order of processing 1 Signal Description See chapter 4 2 1 1 Signal Description on page 40 2 Input Frontend See chapter 4 2 2 Input Frontend on page 60 3 Trigger Signal Capture See chapter 4 2 3 Signal Capture on page 68 4 Estimation Tracking See chapter 4 2 4 Parameter Estimation on page 70 5 Demodulation See chapter 4 2 5 Demodulation on page 71 6 Evaluation Range See chapter 5 1 1 Evaluation Range on page 76 7 Analysis See chapter 5 Analysis on page 76 8 Display Configuration See chapter 2 1 Measurements page 12 In addition the dialog box provides the Select Measurement button that serves as a shortcut to select the measurement type Note that the Overview dialog box for frequency sweep measurement is similar to that
193. splayed number of resource blocks depends on the channel bandwidth or number of resource blocks you have set On the y axis the power is plotted in dBm 3 Power vs RB PDSCH dBm 1 Avg 2 Min Max 5 RB div Remote command LAY ADD M LEFT PVRP TRACe DATA Power vs Resource Block RS Starts the Power vs Resource Block RS result display This result display shows the power of the reference signal per resource block By default three traces are shown One trace shows the average power The second and the third trace show the minimum and maximum powers respectively You can select to display the power for a specific subframe in the Subframe Selection dialog box In that case the application shows the power of that subframe only The x axis represents the resource blocks The displayed number of resource blocks depends on the channel bandwidth or number of resource blocks you have set On the y axis the power is plotted in dBm 2 Power vs RB Ref Signal dBm 2 Min 3 Max 5 RB div Remote command LAY ADD 1 LEFT PVRR TRACe DATA Channel Flatness Starts the Channel Flatness result display EEUU e A LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLALAALLLTLLLLISL J User Manual 1173 9370 02 05 18 R amp S FSW K10x LTE Downlink Measurements and Result Displays Measurements This result display shows the relative power offset caused by the transmit channel The currently
194. t defines PDSCH P_B which defines the power ratio in dB 0 1 2 3 See PDSCH Power Ratio for an overview of resulting power ratios RAT1 Ratio 1 regardless of the number of antennas Example CONF DL PDSC PB 3 Selects the 3 Manual operation See PDSCH Power Ratio page 60 6 7 2 2 Input Frontend Configuring the Input Remote commands to configure the input described elsewhere INPut COUPling page 144 INPut IMPedance on page 145 SENSe SWAPig page 148 I User Manual 1173 9370 02 05 135 R amp S FSW K10x LTE Downlink Remote Control i a a a ee 4 MUN NN Remote Commands to Configure the Application MANADE DE Vi s 136 INPurEDIO RANGSDUPPer AUTO crees o eode 137 INPut DIQ SSANGeEGCOUPling 137 UP PGR dees hb etu po tene er ee t bae n ces Reise ade tgo 138 INPut DID RANGSDPUPPer E UNIT e iad te RE 138 NPU DIO SRA V6 mec 138 INPUT DIG SRA TCIAUT O voi 22200 mM 138 5 222 nnt phat nen n 139 INPUt FILE Ter VIGES er ES 139 INPut IG BAbancedESTATSe creer Pha eaten ne elise ets 139 TEE s 140 d
195. te SEQuencer ABORt This command stops the currently active sequence of measurements The Sequencer itself is not deactivated so you can start a new sequence immediately using INITiate SEQuencer IMMediate page 91 To deactivate the Sequencer use SYSTem SEQuencer on page 93 Usage Event INITiate SEQuencer IMMediate This command starts a new sequence of measurements by the Sequencer Its effect is similar to the INITiate IMMediate command used for a single measurement T User Manual 1173 9370 02 05 91 R amp S FSW K10x LTE Downlink Remote Control E A Performing Measurements Before this command can be executed the Sequencer must be activated see SYSTem SEQuencer on page 93 Example SYST SEQ ON Activates the Sequencer INIT SEQ MODE SING Sets single sequence mode so each active measurement will be performed once INIT SEQ IMM Starts the sequential measurements Usage Event INITiate SEQuencer MODE Mode This command selects the way the R amp S FSW application performs measurements sequentially Before this command can be executed the Sequencer must be activated see SYSTem SEQuencer on page 93 A detailed programming example is provided in the Operating Modes chapter in the R amp S FSW User Manual Note In order to synchronize to the end of a sequential measurement using OPC OPC WAI you must use SING1e Sequence mode
196. te rtg Dodo tite dede 129 CONFig ure ETE DEPSOETSel eite e dee 134 _ 127 T User Manual 1173 9370 02 05 164 R amp S FSW K10x LTE Downlink List of Commands CONFig rel 129 5 lt gt 124 CONFigure L TE DL SUBFrame ssubframe ALLoc allocation2 POWer esee 124 _ 50 lt gt lt gt 125 50 lt gt lt gt 125 _ 50 lt gt lt gt 125 50 lt gt lt gt 125 CONFigure LTE DL SUBFrame ssubframe ALLoc allocation2 CW Cwnum MODuUlation 126 CONFigure ETEEFDESYNC AN
197. ters lt Value gt lt numeric value gt RST depends on the result display The unit and range depend on the result display Example DISP TRAC Y MIN 60 DISP TRAC Y MAX 0 Defines the y axis with a minimum value of 60 and maximum value of 0 Manual operation See Y Axis Scale on page 78 DISPlay WINDow lt n gt TRACe Y SCALe MINimum Value This command defines the minimum value of the y axis for the selected result display Parameters lt Value gt lt numeric value gt RST depends on the result display The unit and range depend on the result display Example DISP TRAC Y MIN 60 DISP TRAC Y MAX 0 Defines the y axis with a minimum value of 60 and maximum value of 0 Manual operation See Y Axis Scale on page 78 Result Settings HIRED rc acetate tux Mette ddl 155 ee ee 156 UNIT BSTR lt Unit gt This command selects the way the bit stream is displayed Parameters lt Unit gt SYMbols Displays the bit stream using symbols BITs Displays the bit stream using bits RST SYMbols Example UNIT BSTR BIT Bit stream gets displayed using Bits Manual operation See Bit Stream Format on page 78 I User Manual 1173 9370 02 05 155 R amp S FSW K10x LTE Downlink Remote Control 6 9 General Window Commands UNIT EVM lt Unit gt This command selects the EVM unit Parameters lt Unit gt DB EVM results returned in dB PCT EVM
198. the measurement with OPC OPC or WAI For details on synchronization see the Remote Basics chapter in the R amp S FSW User Manual ee User Manual 1173 9370 02 05 90 R amp S FSW K10x LTE Downlink Remote Control 6 4 2 Performing Measurements Example For Spectrum application INIT CONT OFF Switches to single sweep mode DISP WIND TRAC MODE AVER Switches on trace averaging SWE COUN 20 Sets the sweep counter to 20 sweeps INIT WAI Starts the measurement and waits for the end of the 20 sweeps SENSe SYNC STATe This command queries the current synchronization state Return values State The string contains the following information lt OFDMSymbolTiming gt is the coarse symbol timing P SYNCSynchronization is the P SYNC synchronization state lt S SYNCSynchronization gt is the S SYNC synchronization state A zero represents a failure and a one represents a successful synchronization Example SYNC STAT Would return e g 1 1 0 if coarse timing and P SYNC were suc cessful but S SYNC failed Usage Query only Measurement Sequences 2 tonic usa ani Sadari haea inaa iraani Edika 91 SE Guenter IMME ae raa a a eere Ose eR ied 91 SEQUENCER MODE E 92 2 e etes Seatac reser Passa ret oae eo ruta e aseo serbe decas asa oix RO deseada 93 INITia
199. the scrambling of coded bits for all physical channels like PDSCH or PHICH on and off The scrambling of coded bits affects the bitstream results User Manual 1173 9370 02 05 72 R amp S FSW K10x LTE Downlink Configuration Configuring Measurements Source ofbitstream results when Scrambling of coded bits is zON OFF unscrambled bits scrambled bits Scrambling s ans Scrambling Fig 4 1 Source for bitstream results if scrambling for coded bits is and off codewords Remote command SENSe LTE DL DEMod CBSCrambling on page 149 Decode All Control Channels Turns the decoding of all control channels on and off If on the software shows the decoding results in the Channel Decoder Results result display If off e the PBCH is decoded only if the PHICH Duration or the are automatically determined e the PDCCH is decoded only if the PDSCH Subframe Configuration Detection is set to PDCCH protocol If decoding of all control channels is off measurement speed will increase Remote command SENSe LTE DL DEMod DACHannels on page 150 EVM Calculation Method Selects the method to calculate the EVM e EVM 3GPP Definition Calculation of the EVM according to 3GPP TS 36 141 Evaluates the EVM at two trial timing positions and then uses the maximum EVM of the two e At Optimal Timing Position Calculates the EVM usi
200. the two neighboring channels adjacent channels to the left and right of the TX channel Thus the ACLR measurement provides information about the power in the adjacent channels as well as the leakage into these adjacent channels The x axis represents the frequency with a frequency span that relates to the specified channel and adjacent bandwidths On the y axis the power is plotted in dBm a User Manual 1173 9370 02 05 27 R amp S FSW K10x LTE Downlink Measurements and Result Displays Frequency Sweep Measurements By default the ACLR settings are based on the selected LTE Channel Bandwidth You can change the assumed adjacent channel carrier type and if required customize the channel setup to your needs For more information see the documentation of the R amp S FSW 1Rm Clrw 1001 pts Span 51 0 MHz The power for the TX channel is an absolute value in dBm The power of the adjacent channels are values relative to the power of the TX channel In addition the ACLR measurement results are also tested against the limits defined by 3GPP In the diagram the limits are represented by horizontal red lines ACLR table Atable above the result display contains information about the measurement in numerical form Channel Shows the channel type TX Adjacent or Alternate Channel e Bandwidth Shows the bandwidth of the channel e Spacing Shows the channel spacing Lower Upper Shows the re
201. ting window See LAYout ADD WINDow on page 157 for a list of available window types Example LAY REPL WIND 1 MTAB Replaces the result display in window 1 with a marker table LAYout SPLitter lt Index1 gt lt Index2 gt lt Position gt This command changes the position of a splitter and thus controls the size of the windows on each side of the splitter As opposed to the DISPlay WINDow lt n gt 512 on page 156 command the LAYout SPLitter changes the size of all windows to either side of the splitter perma nently it does not just maximize a single window temporarily Note that windows must have a certain minimum size If the position you define conflicts with the minimum size of any of the affected windows the command will not work but does not return an error eee User Manual 1173 9370 02 05 160 R amp S FSW K10x LTE Downlink Remote Control Working with Windows in the Display y 100 x 100 y 100 102 12 dim x 0 y 0 x 100 Fig 6 1 SmartGrid coordinates for remote control of the splitters Parameters Index1 The index of one window the splitter controls Index2 The index of a window on the other side of the splitter Position New vertical or horizontal position of the splitter as a fraction of the screen area without channel and status bar and softkey menu The point of origin x 0 y 0 is in the lower left corner of the screen The end point x 100 y 100 is in the
202. tion e g checking the system configuration customizing the screen layout or configuring networks and remote operation e Using the common status registers specific status registers for Pulse measurements are not used 6 1 Overview of Remote Command Suffixes The remote commands for the LTE Measurement application support the following suf fixes Suffix Description lt allocation gt Selects an allocation lt analyzer gt No effect lt antenna gt Selects an antenna for MIMO measurements lt cluster gt Selects a cluster uplink only lt cwnum gt Selects a codeword lt k gt Selects a limit line Irrelevant for the LTE application lt m gt Selects a marker Irrelevant for the LTE application lt n gt Selects a measurement window lt subframe gt Selects a subframe lt t gt Selects a trace Irrelevant for the LTE application ee User Manual 1173 9370 02 05 80 R amp S FSW K10x LTE Downlink Remote Control PE EEE Sea 6 2 Introduction Introduction Commands are program messages that a controller e g a PC sends to the instrument or software They operate its functions setting commands or events and request infor mation query commands Some commands can only be used in one way others work in two ways setting and query If not indicated otherwise the commands can be used for settings and queries The syntax of a SCPI command consists of a he
203. tive power of 1 dB for the positioning reference sig nal Manual operation See Relative Power Positioning Reference Signal on page 53 MN User Manual 1173 9370 02 05 128 R amp S FSW K10x LTE Downlink Remote Control a A P e O T S Remote Commands to Configure the Application CONFigure L TE DL PRSS STATe State This command turns the positioning reference signal on and off Parameters State ON OFF Example CONF DL PRSS STAT ON Turns the positioning reference signal on Manual operation See Present on page 52 CONFigure L TE DL SFNO Offset This command defines the frame number offset for the positioning reference signal Parameters Offset numeric value Example CONF DL SFNO 4 Defines a frame number offset of 4 Manual operation See Frame Number Offset on page 53 CSI Reference Signal 129 DL CSIRSINAP 129 CONFigure tL TEEDEICSIRS OPDS Gi retenta 130 GONFiSurebETEEDESCSIRSIPOVWGQ 130 GONFigurerETE DESC SIRSHS Cl 130 DL CSIRSIS Ene eate e osa 131 CONFigure LTE DL CSIRs Cl lt CSIRSConfiguration gt This command selects the configurat
204. ue gt RST 0 dB Default unit DB Example CONF DL PCF POW 0 Sets the relative power to 0 dB Manual operation See PCFICH Relative Power on page 57 CONFigure LTE DL PCFich STAT lt State gt This command turns the PCFICH on and off Parameters lt State gt ON OFF RST ON Example CONF DL PCF STAT ON Activates the PCFICH Manual operation See PCFICH Present on page 57 CONFigure LTE DL PDCCh FORMat lt Format gt This command selects the PDCCH format Parameters lt Format gt 1 0 1 2 3 RST 1 Example DL PDCCH FORM 0 Sets the PDDCH format to 0 Manual operation See PDCCH Format on page 59 CONFigure LTE DL PDCCh NOPD lt NofPDCCH gt This command sets the number of PDCCHs Parameters lt NofPDCCH gt lt numeric value gt RST 0 Example CONF DL PDCCH NOPD 3 Sets the number of DPCCHs to 3 SSS User Manual 1173 9370 02 05 132 R amp S FSW K10x LTE Downlink Remote Control b n ey EEE as Remote Commands to Configure the Application Manual operation See Number of PDCCHs on page 59 CONFigure LTE DL PDCCh POWer lt Power gt This command defines the relative power of the PDCCH Parameters lt Power gt lt numeric value gt RST 0 dB Default unit DB Example CONF DL PDCCH POW 1 2 Sets the relative power to 1 2 dB Manual operation See PDCCH Rel Power on page 60 CONFigure L TE DL PHICh DURation Duration This command selects t
205. ults CALCulate lt n gt MARKer lt m gt X on page 115 CALCulate lt n gt MARKer lt m gt Y on page 116 2 2 Time Alignment Measurements The Time Alignment measurement is also based on the data that all other I Q meas urements use Note that the Time Alignment measurement only work in a MIMO setup 2 or 4 antennas Therefore you have to mix the signal of the four antennas into one cable that you can connect to the R amp S FSW For more information on configuring and performing a time alignment measurement see chapter 3 4 Performing Time Alignment Measurements on page 35 In addition to the result displays mentioned in this section the Time Alignment measure ment also supports the following result displays described elsewhere e Capture Buffer on page 13 e Power Spectrum on page 17 e Channel Flatness on page 18 e Channel Group Delay on page 19 e Channel Flatness Difference on page 19 M User Manual 1173 9370 02 05 26 R amp S FSW K10x LTE Downlink Measurements and Result Displays Frequency Sweep Measurements e Marker Table on page 26 TMG Aliment ENO RET 27 Time Alignment Error Starts the Time Alignment Error result display This result display contains all relevant time alignment measurement results in numerical form Reference antenna Selects the reference antenna for the time alignment errors of the other antennas Limit Shows the maximum time delay that may occur for eac
206. um result display the command returns one value for each trace point lt power gt The unit is always dBm Hz The following parameters are supported e TRACE1 Power vs RB RS For the Power vs RB RS the command returns one value for each resource block of the reference signal that has been analyzed lt absolute power gt The unit is always dBm The following parameters are supported e TRACE1 Returns the average power over all subframes TRACE2 Returns the minimum power found over all subframes If you are analyzing a partic ular subframe it returns nothing TRACE3 User Manual 1173 9370 02 05 101 R amp S FSW K10x LTE Downlink Remote Control ese see a SS CCC I Remote Commands to Read Trace Data Returns the maximum power found over all subframes If you are analyzing a partic ular subframe it returns nothing 6 5 1 19 Power vs RB PDSCH For the Power vs RB PDSCH the command returns one value for each resource block of the PDSCH that has been analyzed lt absolute power gt The unit is always dBm The following parameters are supported e TRACE1 Returns the average power over all subframes e TRACE2 Returns the minimum power found over all subframes If you are analyzing a partic ular subframe it returns nothing TRACE3 Returns the maximum power found over all subframes If you are analyzing a partic ular subf
207. umber of the subframe starting with O The application updates the contents of the configuration table to the selected subframe GonnigurngPDSGhl AlIGEatlgns ete ee te E e EN eens 48 User Manual 1173 9370 02 05 47 R amp S FSW K10x LTE Downlink Configuration X n n a Configuring Measurements Configuring PDSCH Allocations In the default state each subframe contains one allocation Add allocations with the Used Allocations parameter The application expands the configuration table accord ingly with one row representing one allocation You can define a different number of allocations for each subframe you want to configure and configure up to 110 allocations in every subframe The configuration table contains the settings to configure the allocations ID N RNTI Selects the allocation s ID The ID corresponds to the N RNTI By default the application assigns consecutive numbers starting with O The ID or N_RNTI is the user equipment identifier for the corresponding allocation and is a number in the range from 0 to 65535 The order of the numbers is irrelevant You can combine allocations by assigning the same number more than once Com bining allocations assigns those allocations to the same user Allocations with the same N RNTI share the same modulation scheme and power settings Code Word Shows the code word of the allocation The code word is made up out of two numbers The first number is the number
208. umeric value gt Numeric value that defines the subframe configuration Subframe configurations 7 and 8 are only available if the cyclic prefix is normal Range 0 to 8 RST 0 CONF DL CYCP NORM Selects normal cyclic prefix CONF DL TDD SPSC 7 Selects subframe configuration 7 available only with a normal cyclic prefix See Configuring TDD Frames on page 43 CONFigure LTE DL TDD UDConf Configuration This command selects the UL DL subframe configuration for downlink signals Parameters lt Configuration gt Example Manual operation Range 0 to 6 RST 0 CONF DL TDD UDC 2 Selects allocation configuration number 2 See Configuring TDD Frames on page 43 CONFigure LTE DL PLC CID lt Cellld gt This command defines the cell ID User Manual 1173 9370 02 05 119 R amp S FSW K10x LTE Downlink Remote Control Remote Commands to Configure the Application Parameters lt Cellld gt AUTO Automatically defines the cell ID lt numeric value gt Number of the cell ID Range 0 to 503 Example CONF DL PLC CID 12 Defines the cell ID 12 CONFigure LTE DL PLC CIDGroup lt GroupNumber gt This command selects the cell ID group for downlink signals Parameters lt GroupNumber gt AUTO Automatic selection 0 167 Manual selection RST AUTO Example CONF DL PLC CIDG 134 Cell identity group number 134 is selected CONF DL PLC CIDG AUTO Automatic cell identity group detect
209. upper right corner of the screen See figure 6 1 The direction in which the splitter is moved depends on the screen layout If the windows are positioned horizontally the splitter also moves horizontally If the windows are positioned vertically the splitter also moves vertically Range 0 to 100 Example LAY SPL 1 3 50 Moves the splitter between window 1 Frequency Sweep and 3 Marker Table to the center 50 of the screen i e in the figure above to the left Example LAY SPL 1 4 70 Moves the splitter between window 1 Frequency Sweep and 3 Marker Peak List towards the top 70 of the screen The following commands have the exact same effect as any com bination of windows above and below the splitter moves the splitter vertically AY SPL 3 2 70 AY SPL 4 1 70 AY SPL 2 1 70 User Manual 1173 9370 02 05 161 R amp S FSW K10x LTE Downlink Remote Control Working with Windows in the Display LAY out WINDow lt n gt ADD lt Direction gt lt WindowType gt This command adds a measurement window to the display Note that with this command the suffix lt n gt determines the existing window next to which the new window is added as opposed to LAYout ADD WINDow for which the existing window is defined by a parameter To replace an existing window use the LAYout WINDow lt n gt REPLace command This command is always used as a query so that you immediately obtain the
210. urce allocation by analyzing the protocol information in the PDCCH or by analyzing the physical signal It then writes the results into the PDSCH Configuration Table User Manual 1173 9370 02 05 46 R amp S FSW K10x LTE Downlink Configuration P i 2 22 22 1 Configuring Measurements You can set the way the R amp S FSW identifies the PDSCH resource allocation with PDSCH Subframe Configuration Detection on page 46 If the automatic demodulation of the PDSCH is off you have to configure the PDSCH manually In that case the application compares the demodulated LTE frame to the cus tomized configuration If the PDSCH Subframe Configuration Detection is not turned off the application analyzes the frame only if both configurations are the same Remote command SENSe LTE Db DEMod AUTO page 124 Configuring PDSCH Subframes The application allows you to configure individual subframes that are used to carry the information of the PDSCH The PDSCH Physical Downlink Shared Channel primarily carries all general user data It therefore takes up most of the space in a radio frame If you turn Auto Demodulation on the appplication automatically determines the sub frame configuration for the PDSCH In the default state automatic configuration is on Every LTE frame FDD and TDD contains 10 subframes Each downlink subframe con sists of one or m
211. value for each I Q sample in the capture buffer absolute power The unit is always dBm The following parameters are supported TRACE1 6 5 1 5 CCDF For the CCDF result display the type of return values depends on the parameter TRACE1 Returns the probability values y axis f of values probability The unit is always 96 The first value that is returned is the number of the following values User Manual 1173 9370 02 05 96 R amp S FSW K10x LTE Downlink Remote Control ii Aa Remote Commands to Read Trace Data TRACE2 Returns the corresponding power levels x axis lt of values gt lt relative power gt The unit is always dB The first value that is returned is the number of the following values 6 5 1 6 Channel Decoder Results For the Channel Decoder Results the number and type of return values depend on the parameter PBCH Returns the results for the PBCH if PBCH decoding or CRC check was successful The results are made up out of six values lt subframe gt lt of antennas gt lt system bandwidth gt lt frame gt lt PHICH duration gt lt PHICH resource gt The unit for lt system bandwidth gt is Hz All other values have no unit The PHICH duration and PHICH resource are encoded For the code assignment see chapter 6 5 1 21 Return Value Codes on page 102 If PBCH decoding was not successful the command returns NAN PCFICH Returns the results fo
212. x LTE Downlink Measurements and Result Displays Measurements Capture Buffer The Capture Buffer result display shows the complete range of captured data for the last data capture The x axis represents time The maximum value of the x axis is equal to the Capture Time The y axis represents the amplitude of the captured data dBm for RF input 2 Capture Memory 332 ee 923 012 832 3131 23 eee eee 2 01 ms The bar at the bottom of the diagram represents the frame that is currently analyzed Different colors indicate the OFDM symbol type E Indicates the data stream 6 Indicates the reference signal and data E Indicates the P SYNC and data L Indicates the S SYNC and data A green vertical line at the beginning of the green bar in the Capture Buffer display marks the subframe start Additionally the diagram contains the Start Offset value This value is the time difference between the subframe start and capture buffer start When you zoom into the diagram you will see that the bar may be interrupted at certain positions Each small bar indicates the useful parts of the OFDM symbol Remote command LAY ADD LEFT CBUF TRACe DATA Querying the subframe start offset FETCh SUMMary TFRame page 114 EVM vs Carrier Starts the EVM vs Carrier result display User Manual 1173 9370 02 05 13 R amp S FSW K10x LTE Downlink Measurements
213. xEV DO BTS R amp S FSW BDO 1xEV DO BTS K84 1xEV DO MS R amp S FSW MDO 1xEV DO MS K85 WLAN R amp S FSW K91 WLAN WLAN LTE R amp S FSW K10x LTE LTE Note the default channel name is also listed in the table If the specified name for a new channel already exists the default name extended by a sequential number is used for the new channel INSTrument REName ChannelName1 lt ChannelName2 gt This command renames a measurement channel Parameters lt ChannelName1 gt String containing the name of the channel you want to rename lt ChannelName2 gt String containing the new channel name Note that you can not assign an existing channel name to a new channel this will cause an error Example INST REN Spectrum2 Spectrum3 Renames the channel with the name Spectrum2 to Spectrum3 INSTrument SELect lt ChannelType gt This command selects a new measurement channel with the defined channel type Parameters lt ChannelType gt LTE LTE measurement channel R amp S FSW K10x ee User Manual 1173 9370 02 05 88 R amp S FSW K10x LTE Downlink Remote Control Performing Measurements Example INST LTE Selects the LTE application 6 4 Performing Measurements 6 4 1 Measurements P rip e PC 89 90 INITiate IMIMediate eon eee
214. y EVM PSIGnal AVERage This command queries the EVM of all physical signal resource elements Return values lt EVM gt lt numeric value gt Minimum maximum or average EVM depending on the last com mand syntax element The unit is or dB depending on your selection Example FETC SUMM EVM PSIG Returns the mean value Usage Query only Manual operation See Result Summary on page 24 FETCh SUMMary FERRor MAXimum FETCh SUMMary FERRor MINimum FETCh SUMMary FERRor AVERage This command queries the frequency error _LL_L_____ T User Manual 1173 9370 02 05 111 R amp S FSW K10x LTE Downlink Remote Control b a Remote Commands to Read Numeric Results Return values lt FreqError gt lt numeric value gt Minimum maximum or average frequency error depending on the last command syntax element Default unit Hz Example FETC SUMM FERR Returns the average frequency error in Hz Usage Query only Manual operation See Result Summary on page 24 FETCh SUMMary GIMBalance MAXimum FETCh SUMMary GIMBalance MINimum FETCh SUMMary GIMBalance AVERage This command queries I Q gain imbalance Return values lt gt lt numeric value gt Minimum maximum or average imbalance depending on the last command syntax element Default unit dB Example FETC SUMM GIMB Returns the current gain imbalance in dB Usage Query only Ma
215. you set the value of the PHICH Ng to Custom and at the same time define 0 PHICH groups the PHICH is excluded from the signal Advanced Settings Control Channel PHICH Duration PHICH 0 1 6 EY PHICH No of Groups eae RES Power PHICH Duration Selects the duration of the PHICH Normal and extended duration are supported With a normal duration all resource element groups of the PHICH are allocated on the first OFDM symbol With an extended duration the resource element groups of the PHICH are distributed over three OFDM symbols for a normal subframe or over two symbols within a special subframe If you select Auto the duration of PHICH is automatically determined and based on the PBCH decoding results Note that you have to turn on the PBCH for an automatic detetemination of the PHICH duration Remote command CONFigure LTE DL PHICh DURation on page 133 PHICH TDD m_i 1 E TM Turns the special setting of the PHICH for the enhanced test models on and off The special setting is defined in 36 141 V9 0 0 6 1 2 6 For frame structure type 2 the factor m_i shall not be set as per TS36 211 Table 6 9 1 but instead shall be set to m 1 for all transmitted subframes The parameter is available if you have selected TDD Remote command CONFigure LTE DL PHICh MITM on page 133 PHICH N g Sets the variable No N in combination with the number of resource blocks defines the number

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R&S FSW-K10x (LTE Downlink) LTE Downlink