ulsim: test UCI on PUSCH with matlab

Since there is no UCI on PUSCH implementation in gNB, it is good to test UE's implementation with matlab. This commit allows to test with matlab in two ways: 1. generate OFDM waveform from ulsim and decode it in matlab using uci_on_pusch_decode.m 2. generate codeword in matlab using uci_on_pusch_encode.m read it in ulsim and compare the bits. ulsim option -o is used
2025-09-30 00:24:39 +08:00
parent 83bf140bc3
commit 59ff9ae04e
5 changed files with 335 additions and 9 deletions
@@ -0,0 +1,85 @@
+% ulsim command for same pusch config
+% ./nr_ulsim -m 27 -u 1 -R 51 -r 51 -s 300 -o uci_on_pusch_7.bin
+
+carrier = nrCarrierConfig;
+carrier.NSizeGrid = 51;
+carrier.NSlot = 8;
+carrier.SubcarrierSpacing = 30;
+carrier.CyclicPrefix = "normal";
+
+pusch = nrPUSCHConfig;
+pusch.PRBSet = 0:carrier.NSizeGrid-1;
+pusch.SymbolAllocation = [0,12];
+pusch.MappingType = "B";
+pusch.NID = 0;
+pusch.RNTI = 4660;
+pusch.NumLayers = 1;
+pusch.TransformPrecoding = false;
+pusch.TransmissionScheme = "nonCodebook";
+pusch.NumAntennaPorts = 1;
+pusch.TPMI = 0;
+pusch.Modulation = "64QAM";
+
+pusch.DMRS.DMRSConfigurationType = 1;
+pusch.DMRS.DMRSTypeAPosition = 2;
+pusch.DMRS.NumCDMGroupsWithoutData = 1;
+pusch.DMRS.DMRSAdditionalPosition = 0;
+pusch.DMRS.NIDNSCID = 0;
+pusch.DMRS.NRSID = 0;
+pusch.DMRS.NSCID = 0;
+pusch.DMRS.GroupHopping = 0;
+pusch.DMRS.SequenceHopping = 0;
+
+pusch.BetaOffsetACK = 20;
+pusch.BetaOffsetCSI1 = 6.25;
+pusch.BetaOffsetCSI2 = 1;
+pusch.UCIScaling = 1;
+
+A = 37896;
+rate = 910 / 1024;
+rv = 0;
+modulation = pusch.Modulation;
+nlayers = pusch.NumLayers; % Number of layers for decoding
+
+oack = 7;
+ocsi1 = 0;
+ocsi2 = 0;
+cbsInfo = nrULSCHInfo(pusch, rate, A, oack, ocsi1, ocsi2); % Get ULSCH information
+
+ack = randi([0 1],oack,1);
+csi1 = randi([0 1],ocsi1,1);
+csi2 = randi([0 1],ocsi2,1);
+cack = nrUCIEncode(ack,cbsInfo.GACK,pusch.Modulation);
+ccsi1 = [];
+ccsi2 = [];
+
+tb_data = randi([0 1],A,1);
+% Transport block CRC attachment
+tbIn = nrCRCEncode(tb_data,cbsInfo.CRC);
+
+% Code block segmentation and CRC attachment
+cbsIn = nrCodeBlockSegmentLDPC(tbIn,cbsInfo.BGN);
+
+% LDPC encoding
+enc = nrLDPCEncode(cbsIn,cbsInfo.BGN);
+
+% Rate matching and code block concatenation
+chIn = nrRateMatchLDPC(enc,cbsInfo.GULSCH,rv,modulation,nlayers);
+culsch = chIn;
+
+
+% Get the codeword and locations of each type (data and UCI)
+[cw,indInfo] = nrULSCHMultiplex(pusch,rate,A,culsch,cack,ccsi1,ccsi2);
+cw_scr = nrPUSCHScramble(cw,pusch.NID,pusch.RNTI);
+
+% Write to bin file
+fid = fopen('uci_on_pusch_7.bin', 'wb');
+to_write = [A,oack,ocsi1,ocsi2,length(cw),length(cw_scr)];
+fwrite(fid, to_write, 'uint32'); % Write the data to the binary file
+fwrite(fid, tb_data, "uint8");
+fwrite(fid, ack, "uint8");
+fwrite(fid, csi1, "uint8");
+fwrite(fid, csi2, "uint8");
+fwrite(fid, cw, "uint8");
+fwrite(fid, cw_scr, "uint8");
+fclose(fid); % Close the file after writing