5G waveform generator app from the 5G toolbox matlab script export option does not work

When running the 5G waveform app, and then selecting export--> export MATLAB script

gives an answer that

Exporting MATLAB script is not supported for downlink FRC-NR(5G) waveforms

Answer 1

[Cris LaPierre]

The error message is pretty clear - it is not yet possible to export a script for this waveform type in the current app version.

If you are just looking for the equivalent code, this should work. I tested it in R2021a.

% Downlink FRC configuration:
cfgDLFRC = nrDLCarrierConfig;
cfgDLFRC.Label = 'DL-FRC-FR1-QPSK';
cfgDLFRC.FrequencyRange = 'FR1';
cfgDLFRC.ChannelBandwidth = 5;
cfgDLFRC.NCellID = 1;
cfgDLFRC.NumSubframes = 10;
cfgDLFRC.WindowingPercent = 0;
cfgDLFRC.SampleRate = [];
cfgDLFRC.CarrierFrequency = 0;

%% SCS specific carriers
scscarrier = nrSCSCarrierConfig;
scscarrier.SubcarrierSpacing = 15;
scscarrier.NSizeGrid = 25;
scscarrier.NStartGrid = 0;

cfgDLFRC.SCSCarriers = {scscarrier};

%% Bandwidth Parts
bwp = nrWavegenBWPConfig;
bwp.BandwidthPartID = 1;
bwp.Label = 'BWP1';
bwp.SubcarrierSpacing = 15;
bwp.CyclicPrefix = 'normal';
bwp.NSizeBWP = 25;
bwp.NStartBWP = 0;

cfgDLFRC.BandwidthParts = {bwp};

%% Synchronization Signals Burst
ssburst = nrWavegenSSBurstConfig;
ssburst.BlockPattern = 'Case A';
ssburst.TransmittedBlocks = [1 0 0 0];
ssburst.Period = 10;
ssburst.NCRBSSB = [];
ssburst.KSSB = 0;
ssburst.DataSource = 'MIB';
ssburst.DMRSTypeAPosition = 2;
ssburst.CellBarred = false;
ssburst.IntraFreqReselection = false;
ssburst.PDCCHConfigSIB1 = 0;
ssburst.SubcarrierSpacingCommon = 30;
ssburst.Enable = true;
ssburst.Power = 0;

cfgDLFRC.SSBurst = ssburst;

%% CORESET and Search Space Configuration
coreset = nrCORESETConfig;
coreset.CORESETID = 1;
coreset.Label = 'CORESET1';
coreset.FrequencyResources = ones([1 4]);
coreset.Duration = 2;
coreset.CCEREGMapping = 'noninterleaved';
coreset.REGBundleSize = 2;
coreset.InterleaverSize = 2;
coreset.ShiftIndex = 0;

cfgDLFRC.CORESET = {coreset};

% Search Spaces
searchspace = nrSearchSpaceConfig;
searchspace.SearchSpaceID = 1;
searchspace.Label = 'SearchSpace1';
searchspace.CORESETID = 1;
searchspace.SearchSpaceType = 'common';
searchspace.StartSymbolWithinSlot = 0;
searchspace.SlotPeriodAndOffset = [1 0];
searchspace.Duration = 1;
searchspace.NumCandidates = [8 8 4 2 0];

cfgDLFRC.SearchSpaces = {searchspace};

%% PDCCH Instances Configuration
pdcch = nrWavegenPDCCHConfig;
pdcch.Enable = false;
pdcch.Label = 'PDCCH1';
pdcch.Power = 0;
pdcch.BandwidthPartID = 1;
pdcch.SearchSpaceID = 1;
pdcch.AggregationLevel = 1;
pdcch.AllocatedCandidate = 1;
pdcch.SlotAllocation = 1:9;
pdcch.Period = 10;
pdcch.Coding = false;
pdcch.DataBlockSize = 20;
pdcch.DataSource = 0;
pdcch.RNTI = 0;
pdcch.DMRSScramblingID = 1;
pdcch.DMRSPower = 0;

cfgDLFRC.PDCCH = {pdcch};

%% PDSCH Instances Configuration
pdsch = nrWavegenPDSCHConfig;
pdsch.Enable = true;
pdsch.Label = 'Full-band PDSCH sequence';
pdsch.Power = 0;
pdsch.BandwidthPartID = 1;
pdsch.Modulation = 'QPSK';
pdsch.NumLayers = 1;
pdsch.MappingType = 'A';
pdsch.ReservedCORESET = [];
pdsch.SymbolAllocation = [2 12];
pdsch.SlotAllocation = 1:9;
pdsch.Period = 10;
pdsch.PRBSet = 0:24;
pdsch.VRBToPRBInterleaving = 0;
pdsch.VRBBundleSize = 2;
pdsch.NID = [];
pdsch.RNTI = 1;
pdsch.Coding = true;
pdsch.TargetCodeRate = 0.30078125;
pdsch.TBScaling = 1;
pdsch.XOverhead = 0;
pdsch.RVSequence = 0;
pdsch.DataSource = 'PN9';
pdsch.DMRSPower = 3;
pdsch.EnablePTRS = false;
pdsch.PTRSPower = 0;

% PDSCH Reserved PRB
pdschReservedPRB = nrPDSCHReservedConfig;
pdschReservedPRB.PRBSet = 0:2;
pdschReservedPRB.SymbolSet = [0 1];
pdschReservedPRB.Period = 1;

pdsch.ReservedPRB = {pdschReservedPRB};

% PDSCH DM-RS
pdschDMRS = nrPDSCHDMRSConfig;
pdschDMRS.DMRSConfigurationType = 1;
pdschDMRS.DMRSReferencePoint = 'CRB0';
pdschDMRS.DMRSTypeAPosition = 2;
pdschDMRS.DMRSAdditionalPosition = 2;
pdschDMRS.DMRSLength = 1;
pdschDMRS.CustomSymbolSet = [];
pdschDMRS.DMRSPortSet = [];
pdschDMRS.NIDNSCID = [];
pdschDMRS.NSCID = 0;
pdschDMRS.NumCDMGroupsWithoutData = 2;

pdsch.DMRS = pdschDMRS;

% PDSCH PT-RS
pdschPTRS = nrPDSCHPTRSConfig;
pdschPTRS.TimeDensity = 1;
pdschPTRS.FrequencyDensity = 2;
pdschPTRS.REOffset = '00';
pdschPTRS.PTRSPortSet = [];

pdsch.PTRS = pdschPTRS;

cfgDLFRC.PDSCH = {pdsch};

%% CSI-RS Instances Configuration
csirs = nrWavegenCSIRSConfig;
csirs.Enable = false;
csirs.Label = 'CSIRS1';
csirs.Power = 0;
csirs.BandwidthPartID = 1;
csirs.CSIRSType = {'nzp'};
csirs.CSIRSPeriod = 'on';
csirs.RowNumber = 1;
csirs.Density = {'three'};
csirs.SymbolLocations = {0};
csirs.SubcarrierLocations = {0};
csirs.NumRB = 25;
csirs.RBOffset = 0;
csirs.NID = 1;

cfgDLFRC.CSIRS = {csirs};

% waveform generation:
[waveform,info] = nrWaveformGenerator(cfgDLFRC);

Fs = info.ResourceGrids(1).Info.SampleRate; 								 % sample rate of waveform

%% Visualize
% Spectrum Analyzer
spectrum = dsp.SpectrumAnalyzer('SampleRate', Fs);
spectrum(waveform);
release(spectrum);

[Amichai Sanderovich]

Thank you for your answer.

The main advantage I am seeing to the export script option (which according to the documents\help should be supported, and is rather simple to do?) - is that it enables one to select options and see the resulting waveform in the simple GUI tool, while being able to use it later inside a simulation.

Controling 100> parameters is not simple and need some experty, while pushing the bottons and seeing the result is very simple and intuitive.

I must say I am not used to MATHWORKS releasing features in such a way.

[Cris LaPierre]

I can't speak to why generating this specific configuration was not completed in R2021a, but fwiw, the code I shared was generated in the R2021B prerelease, which went live yesterday, so the capability is coming.