loadFromFile = 0;%设置为1以加载捕获的波形如果loadFromFile负载捕获波形百分比Rx =负载(“capturedWaveformSIB1.mat”）;rx波形= rx.波形;设置接收器采样率(采样次数/秒)rxSampleRate = rx.sampleRate;符号相位补偿频率。指定运营商中心%频率或设置为0禁用符号相位补偿fPhaseComp = rx.fPhaseComp;%载波中心频率(Hz)%设置需要的NR频段最小信道带宽在FR1中配置CORESET 0(参见TS 38.101-1表5.3.5-1)minChannelBW = rx.minChannelBW;% 5,10,40 MHz在接收端配置必要的突发参数。SSB模式%可以是FR1的'Case A'，'Case B'，'Case C'或'Case D'，'Case E'% FR2。FR1和64的最大块数L_max可以是4或8% FR2。refBurst。BlockPattern = rx.ssbBlockPattern;refBurst。L_max = rx.L_max;其他的%生成包含SS突发和SIB1的波形配置单元标识Config = struct();配置。NCellID = 102;%配置SS突发配置。BlockPattern =“案例B”；% FR1: '情况A'，'情况B'，'情况C'。FR2: 'Case D'，'Case E'配置。TransmittedBlocks = ones(1,8);SS块传输的百分比位图配置。SubcarrierSpacingCommon = 15;% SIB1子载波间距，kHz (FR1为15或30)。FR2为60或120)配置。EnableSIB1 = 1;%设置为0，禁用SIB1%设置需要的NR频段最小信道带宽在FR1中配置CORESET0(参见TS 38.101-1表5.3.5-1)配置。MinChannelBW = 5;% 5,10,40 MHz%通过提高功率引入波束形成增益(因此一个SSB的% SNR)和相关的SIB1 pdch和PDSCHBoost = 6;%信噪比提高分贝配置。Power = 0 (size(config.TransmittedBlocks));config.Power(1) = boost;%提升第一个SSB配置并生成包含SS突发和SIB1的波形wavegenConfig = hSIB1WaveformConfiguration(config);[tx波形，waveInfo] = nrWaveformGenerator(wavegenConfig);txOfdmInfo = waveInfo.ResourceGrids(1).Info;在波形中添加高斯白噪声。注意只有信噪比%适用于提升的SSB / SIB1rng (“默认”）;重置随机数生成器SNRdB = 20;AWGN的信噪比rx波形= awgn(tx波形，SNRdB-boost，-10*log10(double(txOfdmInfo.Nfft)));配置接收器%抽样率rxSampleRate = txOfdmInfo.SampleRate;符号相位补偿频率(Hz)。这个函数% nrWaveformGenerator不应用符号相位补偿%生成的波形。fPhaseComp = 0;%载波中心频率(Hz)最小信道带宽(MHz)minChannelBW = config.MinChannelBW;在接收端配置必要的突发参数refBurst。BlockPattern = config.BlockPattern;refBurst。L_max = number (config.TransmittedBlocks);结束从配置的突发和接收机参数中获取OFDM信息nrbSSB = 20;scsSSB = hSSBurstSubcarrierSpacing(refBurst.BlockPattern);rxOfdmInfo = nrOFDMInfo(nrbSSB,scsSSB，“SampleRate”, rxSampleRate);显示接收波形的频谱图图;nfft = rxOfdmInfo.Nfft;光谱图(rxWaveform(: 1)的(nfft, 1), 0, nfft,“中心”rxSampleRate,“桠溪”，“MinThreshold”, -130);标题(“接收波形谱图”）

disp (——频率校正和定时估计——）指定频偏搜索带宽，单位为kHzsearchBW = 6*scsSSB;[rx波形，freqOffset,NID2] = hSSBurstFrequencyCorrect(rx波形，refBurst.BlockPattern,rxSampleRate,searchBW);disp (['频率偏移:'num2str (freqOffset“% .0f”）“赫兹”])

使用检测到的PSS创建时间估计的参考网格。。PSS的%放置在参考网格的第二个OFDM符号中，以避免第一个OFDM符号的特殊CP长度%。refGrid = 0 ([nrbSSB*12 2]);refGrid(nrPSSIndices,2) = nrPSS(NID2);正确CP长度的第二个OFDM符号%时间估计。这是之前OFDM符号的时间偏移量%由于参考网格的内容而检测到的SSBnSlot = 0;timingOffset = nrTimingEstimate(rx波形，nrbSSB,scsSSB,nSlot,refGrid，“SampleRate”, rxSampleRate);同步，OFDM解调，提取最强SS块rxGrid = nrOFDMDemodulate(rx波形(1+ timinggoffset:end，:)，nrbSSB,scsSSB,nSlot，“SampleRate”, rxSampleRate);rxGrid = rxGrid(:，2:5，:);%显示样本中的时间偏移量。当测量符号长度时%在FFT样本中，缩放符号长度以考虑接收方%抽样率。srRatio = rxSampleRate/(scsSSB*1e3*rxOfdmInfo.Nfft);firstSymbolLength = rxofdminfo . symbollength (1)*srRatio;STR = sprintf('到同步块的时间偏移:%%。0f个样本(%%.%.)0ff ms) \n'、地板(log10 (rxSampleRate)) 3);流(str timingOffset + firstSymbolLength (timingOffset + firstSymbolLength) / rxSampleRate * 1 e3);

从SS/PBCH块中提取接收到的SSS符号sssIndices = nrSSSIndices;sssRx = nrExtractResources(sssIndices,rxGrid);将接收到的SSS符号与每个可能的SSS序列相关联ss本= 0 (1336);为NID1 = 0:335 ncellid = (3*NID1) + NID2;sssRef = nrSSS(ncellid);党卫军(NID1 + 1) =总和(abs(平均(sssRx。*连词(sssRef), 1)) ^ 2);结束绘制SSS相关性图;茎(0:335党卫军,“o”）;标题(“SSS相关性(频域)”）;包含(“美元N_ {ID} ^{(1)} $”，“翻译”，“乳胶”）;ylabel (“级”）;轴([-1 336 0 max(ss最深)*1.1]);通过找到最强的相关性来确定NID1NID1 = find(ss最深层==max(ss最深层))- 1;绘制选定的NID1持有在；情节(NID1马克斯(ss),“kx”，“线宽”2,“MarkerSize”8);传奇([“相关性”"$ n_ {id}^{(1)}$ = "+ num2str (NID1)),“翻译”，“乳胶”）;从估计的NID1和NID2形成整体细胞特征ncellid = (3*NID1) + NID2;disp ([“细胞身份:”num2str (ncellid)))

计算PBCH DM-RS指数dmrsIndices = nrPBCHDMRSIndices(ncellid);%使用DM-RS符号对每个可能的DM-RS进行信道估计%序列，并估计信噪比dmr本= 0 (1,8);为ibar_SSB = 0:7 refGrid = 0 ([240 4]);refGrid(dmrsIndices) = nrPBCHDMRS(ncellid,ibar_SSB);[hest,nest] = nrChannelEstimate(rxGrid,refGrid，“AveragingWindow”[0, 1]);dmrsEst (ibar_SSB + 1) = 10 * log10(平均(abs(命令(:)。^ 2))/巢);结束% Plot PBCH DM-RS信噪比图;茎(0:7 dmrsEst,“o”）;标题(“PBCH DM-RS信噪比估算”）;包含(“美元\眉题{我}_{单边带}$”，“翻译”，“乳胶”）;xticks (0:7);ylabel (“估计信噪比(dB)”）;轴([-1 8 min(dmrse)-1 max(dmrse)+1]);记录最高信噪比的ibar_SSBibar_SSB = find(dmrse ==max(dmrse)) - 1;绘制选定的ibar_SSB持有在；情节(ibar_SSB马克斯(dmrsEst),“kx”，“线宽”2,“MarkerSize”8);传奇([“信噪比”"$\overline{i}_{SSB}$ = "+ num2str (ibar_SSB)),“翻译”，“乳胶”）;

refGrid = 0 ([nrbSSB*12 4]);refGrid(dmrsIndices) = nrPBCHDMRS(ncellid,ibar_SSB);refGrid(sssIndices) = nrSSS(ncellid);[hest,nest,hestInfo] = nrChannelEstimate(rxGrid,refGrid，“AveragingWindow”[0, 1]);

disp (——PBCH解调和BCH解码——）从SS/PBCH块中提取接收到的PBCH符号[pbchIndices,pbchIndicesInfo] = nrPBCHIndices(ncellid);pbchRx = nrExtractResources(pbchIndices,rxGrid);根据TS 38.211章节7.3.3.1配置'v'用于PBCH置乱当L_max=4时，% 'v'也是SS/PBCH块索引的2个lsb% lsb for L_max=8或64。如果refBurst。L_max == 4 v = mod(ibar_SSB,4);其他的v = ibar_SSB;结束ssbIndex = v;% PBCH均衡和CSI计算pbchHest = nrExtractResources(pbchIndices,hest);[pbchEq,csi] = nrEqualizeMMSE(pbchRx, pbchest,nest);Qm = pbchIndicesInfo。G / pbchIndicesInfo.Gd;csi = repmat(csi.'，Qm,1);Csi =重塑(Csi，[]，1);均衡后接收PBCH星座的百分比图;情节(pbchEq“o”）;包含(“同步”）;ylabel (“交”)标题(“均衡PBCH星座”）;m = max(abs([real(pbchEq(:)));imag(pbchEq(:)))) * 1.1;轴([-m m -m m]);% PBCH解调pbchBits = nrPBCHDecode(pbchEq,ncellid,v,nest);计算RMS PBCH EVMpbchRef = nrPBCH(pbchBits<0,ncellid,v);evm = com . evm;pbchEVMrms = evm(pbchRef,pbchEq);显示计算的EVMdisp ([“PBCH RMS evm:”num2str (pbchEVMrms' % 0.3 f '）“%”]);

%适用CSIpbchBits = pbchBits .* csi;执行BCH解码，包括速率恢复、极性解码和CRC%解码。PBCH解扰和BCH传输块分离% bits 'trblk'从8个额外的有效负载位A…还执行A+7:% a…A+3:系统帧号的4个lsb% A+4:半帧数% a +5…A+7:对于L_max=64, SS/PBCH块索引的3个msb当L_max=4或8时，A+5为子载波偏移量k_SSB的MSBpolarListLength = 8;[~, crcBCH trblk、sfn4lsb nHalfFrame, msbidxoffset] =.．.nrBCHDecode (pbchBits polarListLength、refBurst.L_max ncellid);%显示BCH CRCdisp ([' BCH crc: 'num2str (crcBCH)]);如果BCH收到错误消息，停止处理MIB和SIB1如果crcBCH disp (“BCH CRC不是零。”）;返回结束%使用'msbidxoffset'值设置'k_SSB'或'ssbIndex'的位，具体取决于在突发中SS/PBCH块数量的%如果(refbreak . l_max ==64) ssbIndex = ssbIndex + (bit2int(msbidxoffset,3) * 8);k_SSB = 0;其他的k_SSB = msbidxoffset * 16;结束%显示SSB索引disp ([“SSB指数:”num2str (ssbIndex)]);

将最后23位解码后的BCH传输块解析为MIB消息。BCH传输块'trblk'是RRC消息BCH- BCH- message，%，由前导0位和23位组成，与MIB对应。的%前导位表示传输的消息类型(MIB或空序列)。mib = fromBits(mib,trblk(2:end));不解析前导位创建一组以解码后的第7位为信号的子载波间距FR1 (L_max=4或8)和FR2 (L_max=64)的set是不同的。如果(refBurst.L_max==64) commonSCSs = [60 120];其他的commonSCSs = [15 30];结束initialSystemInfo = struct();initialSystemInfo。NFrame = mib。systemFrameNumber*2^4 + bit2int(sfn4lsb,4);initialSystemInfo。SubcarrierSpacingCommon = commonSCSs(mib. SubcarrierSpacingCommon = commonSCSs。subCarrierSpacingCommon + 1);initialSystemInfo。k_SSB= k_SSB + mib.ssb_SubcarrierOffset; initialSystemInfo.DMRSTypeAPosition = 2 + mib.dmrs_TypeA_Position; initialSystemInfo.PDCCHConfigSIB1 = info(mib.pdcch_ConfigSIB1); initialSystemInfo.CellBarred = mib.cellBarred; initialSystemInfo.IntraFreqReselection = mib.intraFreqReselection;显示MIB结构disp (' BCH/MIB内容:') disp (initialSystemInfo);检查Type0-PDCCH公共搜索空间(CSS)的CORESET是否存在，%根据TS 38.213章节4.1如果~ isCORESET0Present (refBurst.BlockPattern initialSystemInfo.k_SSB)流('CORESET 0不存在(k_SSB > k_SSB_max).\n'）;返回结束

如果(refBurst.L_max==64) scsKSSB = initialSystemInfo.SubcarrierSpacingCommon;其他的scsKSSB = 15;结束k_SSB = initialSystemInfo.k_SSB;kFreqShift = k_SSB*scsKSSB*1e3;rx波形= rx波形.*exp(1i*2*pi*kFreqShift*(0:length(rx波形)-1)'/rxSampleRate);%调整定时偏移到帧原点frameOffset = htiminggoffsettoframe (refBurst, timinggoffset,ssbIndex,rxSampleRate);如果帧偏移量为负，则感兴趣的帧是不完整的。添加%波形的前导零以使波形与帧对齐如果frameOffset < 0 rx波形= [0 (-frameOffset,size(rx波形，2));rx波形];其他的rx波形= rx波形(1+frameOffset:end，:);结束使用CORESET 0带宽确定OFDM解调带宽cset0Idx = initialSystemInfo.PDCCHConfigSIB1.controlResourceSetZero;scsCommon = initialSystemInfo.SubcarrierSpacingCommon;scsPair = [scsSSB scsCommon];[csetNRB，~，csetFreqOffset] = hCORESET0Resources(cset0Idx,scsPair,minChannelBW,k_SSB);接收波形中包含CORESET 0的RB中最小带宽。c0 = csetFreqOffset+10*scsSSB/scsCommon;% CORESET频率偏离载波中心nrb = 2*max(c0,csetNRB-c0);覆盖CORESET 0的最小RB数量如果rxSampleRate < nrb*12*scsCommon*1e3 disp([“SIB1的复苏不可能继续。CORESET 0资源已超出'.．.所配置的采样率的接收波形的频率限制。]);返回；结束OFDM解调接收波形与公共子载波间距nSlot = 0;rxGrid = nrOFDMDemodulate(rx波形，nrb, scsCommon, nSlot，.．.“SampleRate”rxSampleRate,“CarrierFrequency”, fPhaseComp);显示OFDM资源网格，突出最强SS块图;显示亮度图像(abs (rxGrid (:,: 1)));轴xy包含(OFDM符号的）;ylabel (副载波的）;numFrames = floor(length(rx波形)/rxSampleRate/10e-3);SFNS = sprintf(“(%…% d)”, initialSystemInfo。NFrame，initialSystemInfo。NFrame+numFrames-1); title(['已接收资源网格。系统帧号:'sfn));highlightSSBlock (refBurst、ssbIndex nrb、scsPair kFreqShift)

[csetNRB,csetDuration,csetOffset,csetPattern] = hCORESET0Resources(cset0Idx,scsPair,minChannelBW,k_SSB);ssIdx = initialSystemInfo.PDCCHConfigSIB1.searchSpaceZero;[ssSlot,ssFirstSym,isOccasion] = hPDCCH0MonitoringOccasions(ssIdx,ssbIndex,scsPair,csetPattern,csetDuration,initialSystemInfo.NFrame);% PDCCH监测场合关联到不同的SS块%不同的帧。如果在这个框架中没有监控场合，下一个里面一定有一个。slotsPerFrame = 10*scsCommon/15;如果~isOccasion [ssSlot,ssFirstSym,isOccasion] = hPDCCH0MonitoringOccasions(ssIdx,ssbIndex,scsPair,csetPattern,csetDuration,initialSystemInfo.NFrame+1);ssSlot = ssSlot+slotsPerFrame;结束对于FR1, UE连续两次监控type - 0-PDCCH CSS中的PDCCH%插槽用于CORESET模式1如果csetPattern == 1 monSlotsPerPeriod = 2;其他的monSlotsPerPeriod = 1;结束计算子载波和OFDM符号的基于1的下标%插槽包含与此检测到的SS块相关联的PDCCH0%和后续的2帧块csetSubcarriers = 12*(ndb -20*scsSSB/scsCommon)/2 - csetOffset*12 + (1:csetNRB*12);numRxSym = size(rxGrid,2);symbolsPerSlot = 14;numRxSlots = ceil(numRxSym/symbolsPerSlot);monSlots = ssSlot + (0:monSlotsPerPeriod-1)' + (0:2*slotsPerFrame:(numRxSlots-ssSlot-1));monSlots = monSlots(:)';monSymbols = monSlots*symbolsPerSlot + (1:symbolsPerSlot)';monSymbols = monSymbols(:)';删除超过波形限制的监控符号monSymbols(monSymbols > numRxSym) = [];检查搜索空间是否超出波形结束如果isempty (monSymbols) disp (搜索空间超出了波形的末端）;返回；结束从接收网格中提取包含最强PDCCH的槽rxMonSlotGrid = rxGrid(csetSubcarriers,monSymbols，:);

pdch = hPDCCH0Configuration(ssbIndex,initialSystemInfo,scsPair,ncellid,minChannelBW);%配置运营商跨BWP (CORESET 0)c0Carrier = nrCarrierConfig;c0Carrier。SubcarrierSpacing = initialSystemInfo.SubcarrierSpacingCommon;c0Carrier。NStartGrid = pdch . nstartbwp;c0Carrier。NSizeGrid = pdch . nsizebwp;c0Carrier。NSlot = pdch . searchspace . slotperiodandoffset (2);c0Carrier。NFrame = initialSystemInfo.NFrame; c0Carrier.NCellID = ncellid;

指定DCI消息，格式1_0用SI-RNTI打乱% 7.3.1.2.1节)dci = DCIFormat1_0_SIRNTI(pdch . nsizebwp);disp (——PDCCH下行控制信息消息搜索——）;siRNTI = 65535;表7.1-1dciCRC = true;mlot = 0;遍历所有监控槽而(mlot < length(monSlots)) && dciCRC ~= 0 c0载波。NSlot = monSlots(mlot +1);如果monSlotsPerPeriod = = 2如果mod(mlot,2) pdch . searchspace . slotperiodandoffset (2) = monSlots(2);其他的pdch . searchspace . slotperiodandoffset (2) = monSlots(1);结束结束根据TS 38.213章节10.1获取PDCCH候选人[pdcchInd, pdchdmrssym, pdchdmrsind] = nrPDCCHSpace(c0Carrier,pdcch);rxSlotGrid = rxMonSlotGrid(:，(1:symbolsPerSlot) + symbolsPerSlot* mlot，:);rxSlotGrid = rxSlotGrid/max(abs(rxSlotGrid(:))));接收RE幅度的归一化遍历所有支持的聚合级别万博1manbetxaLev = 1;而(aLev <= 5) && dciCRC ~= 0在SS中的每个聚合级别上遍历所有候选对象cIdx = 1;numCandidatesAL = pdch . searchspace . numcandidate (aLev);而(cIdx <= numCandidatesAL) && dciCRC ~= 0使用PDCCH DM-RS进行信道估计[hest,nVar, pdchhestinfo] = nrChannelEstimate(rxSlotGrid, pdchdmrsind {aLev}(:，cIdx)，pdcchDmrsSym{aLev}(:，cIdx));PDCCH符号的均衡化和解调[pdcchRxSym,pdcchHest] = nrExtractResources(pdcchInd{aLev}(:，cIdx)，rxSlotGrid,hest);pdcchEqSym = nrEqualizeMMSE(pdcchRxSym, pdcchest,nVar);dcicw = nrPDCCHDecode(pdcchEqSym, pdch . dmrsscramblingid, pdch . rnti,nVar);% DCI消息解码polarListLength = 8;[dcibits,dciCRC] = nrdciccode (dcicw,dci.Width,polarListLength,siRNTI);如果dciCRC == 0 disp([“解码的PDCCH候选#”num2str (cIdx)“在聚合层面”num2str (2 ^ (aLev-1))))结束cIdx = cIdx + 1;结束aLev = aLev+1;结束mlot = mlot +1;结束cIdx = cIdx-1;aLev = aLev-1;mlot = mSlot-1;monSymbols = monSymbols(mlot *symbolsPerSlot + (1:symbolsPerSlot));计算RMS PDCCH EVMpdcchRef = nrPDCCH(double(dcicw<0)， pdch . dmrsscramblingid, pdch . rnti);evm = com . evm;pdcchEVMrms = evm(pdcchRef,pdcchEqSym);显示计算的EVMdisp ([' PDCCH RMS evm: 'num2str (pdcchEVMrms' % 0.3 f '）“%”]);disp ([' PDCCH crc: 'num2str (dciCRC)]);%突出显示最强SSB对应的CORESET 0/SS边框= @(y,x,h,w)“位置”，[x+0.5 y-0.5 w h]，“EdgeColor”，“r”）;bounding_box (csetSubcarriers (1) monSymbols (1) + ssFirstSym-1 csetNRB * 12, csetDuration);STR = sprintf(' CORESET 0 /党卫军'）;文本(monSymbols (1) + ssFirstSym-7 csetSubcarriers(1) -20年,0,str,“字形大小”10“颜色”，' w '）如果dciCRC disp (“DCI解码失败。”）;返回结束均衡后接收到PDCCH星座的百分比图;情节(pdcchEqSym“o”）;包含(“同步”）;ylabel (“交”)标题(“均衡PDCCH星座”）;m = max(abs([real(pdcchEqSym(:)));imag(pdcchEqSym(:)))) * 1.1;轴([-m m -m m]);%显示最强PDCCH槽位的OFDM网格图;显示亮度图像(abs (rxSlotGrid (:,: 1)));轴xy包含(OFDM符号的）;ylabel (副载波的）;标题(“含有最强PDCCH的槽”）;在资源网格中突出显示PDCCHsubspdch = nrPDCCHSpace(c0Carrier,pdcch，“IndexStyle”，“潜艇”）;subspdch = double(subspdch {aLev}(:，:，cIdx));x = min(subspdch (:，2))-1;X = max(subspdch (:，2))-x;y = min(subspdch (:，1));Y = max(subspdch (:，1))-y+1;bounding_box (y, x, y, x);STR = sprintf('PDCCH \nAggregation Level: %d\nCandidate: %d'2 . ^ (aLev-1), cIdx-1);文本(x + x + 1, y + y / 2, 0, str,“字形大小”10“颜色”，' w '）

构建DCI消息结构dci = fromBits(dci,dcibits);从单元ID、BCH信息和DCI获取PDSCH配置[pdsch,K_0] = hSIB1PDSCHConfiguration(dci, pdch . nsizebwp, initialsysteminfo . dmrstypeposition,csetPattern);对于CORESET模式2,gNodeB可以在下一个插槽分配PDSCH，%，由DCI表示的槽偏移量K_0表示。更多的参见TS 38.214表5.1.2.1.4 -4。c0Carrier。NSlot = c0Carrier.NSlot+K_0;monSymbols = monSymbols+symbolsPerSlot*K_0;如果K_0 > 0%显示对应PDSCH槽位的OFDM网格图;显示亮度图像(abs (rxGrid (csetSubcarriers monSymbols 1)));轴xy包含(OFDM符号的）;ylabel (副载波的）;标题('包含PDSCH的槽(槽偏移量K_0 = 1)'）;结束使用PDSCH DM-RS的PDSCH信道估计和均衡pdschDmrsIndices = nrPDSCHDMRSIndices(c0Carrier,pdsch);pdschDmrsSymbols = nrPDSCHDMRS(c0Carrier,pdsch);

disp (PDSCH解调和DL-SCH解码) mu = log2(scsCommon/15);Bw = 2^mu*100;%搜索带宽(kHz)freqStep = 2^mu;频率步长(kHz)freqSearch = -bw/2:freqStep:bw/2-freqStep;[~，fSearchIdx] = sort(abs(freqSearch));从中心排序频率freqSearch = freqSearch(fSearchIdx);为fpc = fPhaseComp - kFreqShift + 1e3*freqSearchOFDM解调接收波形nSlot = 0;rxGrid = nrOFDMDemodulate(rx波形，nrb, scsCommon, nSlot，.．.“SampleRate”rxSampleRate,“CarrierFrequency”fpc);从接收的网格中提取监控槽rxSlotGrid = rxGrid(csetSubcarriers,monSymbols，:);rxSlotGrid = rxSlotGrid/max(abs(rxSlotGrid(:))));接收RE幅度的归一化PDSCH符号的信道估计与均衡[hest,nVar,pdschHestInfo] = nrChannelEstimate(rxSlotGrid,pdschDmrsIndices,pdschDmrsSymbols);[pdschIndices,pdschIndicesInfo] = nrPDSCHIndices(c0Carrier,pdsch);[pdschRxSym,pdschHest] = nrExtractResources(pdschIndices,rxSlotGrid,hest);pdschEqSym = nrEqualizeMMSE(pdschRxSym,pdschHest,nVar);% PDSCH解调cw = nrPDSCHDecode(c0Carrier,pdsch,pdschEqSym,nVar);创建并配置DL-SCH解码器与目标码率和传输块大小百分比decodeDLSCH = nrDLSCHDecoder;decodeDLSCH。LDPCDecodingAlgorithm =“规范化min-sum”；Xoh_PDSCH = 0;第5.1.3.2节tcr = hMCS(dci.ModulationCoding);nrepprb = pdschindicesinfo . nrepprb;tbsLength = nrTBS(pdsch.Modulation,pdsch.NumLayers,length(pdsch.PRBSet)，NREPerPRB,tcr,Xoh_PDSCH);decodeDLSCH。TransportBlockLength = tbslenglength;decodeDLSCH。TargetCodeRate = tcr;解码DL-SCH[sib1bits,sib1CRC] = decodeDLSCH(cw,pdsch.Modulation,pdsch.NumLayers,dci.RedundancyVersion);如果sib1CRC == 0打破；结束结束%在资源网格中突出PDSCH和PDSCH DM-RSsubsPdschSym = double(nrPDSCHIndices(c0Carrier,pdsch，“IndexStyle”，“下标”));subsPdschDmrs = double(nrPDSCHDMRSIndices(c0Carrier,pdsch，“IndexStyle”，“下标”));subsPdsch = [subsPdschSym;subsPdschDmrs];x = min(subsPdsch(:，2))-1;X = max(subsPdsch(:，2))-x;y = min(subsPdsch(:，1));Y = max(subsPdsch(:，1))-y+1;bounding_box (y, x, y, x);STR = sprintf('PDSCH (SIB1) \n调制:%s\n码率:%.2f'、pdsch.Modulation tcr);文本(x + 4, y + y + 60 0, str,“字形大小”10“颜色”，' w '）均衡后收到PDSCH星座的百分比图;情节(pdschEqSym“o”）;包含(“同步”）;ylabel (“交”)标题(“均衡PDSCH星座”）;m = max(abs([real(pdschEqSym(:)));imag(pdschEqSym(:)))) * 1.1;轴([-m m -m m]);计算RMS PDSCH EVM，包括任何PDSCH符号的归一化DM-RS和PDSCH功率之间的%偏移pdschRef = nrPDSCH(c0Carrier,pdsch,double(cw{1}<0));evm = com . evm;pdschEVMrms = evm(pdschRef,pdschEqSym/sqrt(var(pdschEqSym)));显示PDSCH EVM和DL-SCH CRCdisp ([“PDSCH RMS evm:”num2str (pdschEVMrms' % 0.3 f '）“%”]);disp ([' PDSCH crc: 'num2str (sib1CRC)]);如果sib1CRC = 0 disp(“SIB1解码成功。”）;其他的disp (“SIB1解码失败。”）;结束

函数isCORESET0Present(ssbBlockPattern,kSSB)开关ssbBlockPattern情况下｛的情况下，“案例B”，“案例C”｝% FR1Kssb_max = 23;情况下｛“D”，“E”｝% FR2Kssb_max = 11;结束如果(kSSB <= kssb_max) present = true;其他的Present = false;结束结束函数timegoffset = htiminggoffsettoframe (burst,offset,ssbIdx,rxSampleRate)由于符号长度是在FFT样本中测量的，缩放符号%长度来表示接收方采样率。非整数延迟%是在过程结束时近似的。scs = hSSBurstSubcarrierSpacing(burst.BlockPattern);ofdmInfo = nrOFDMInfo(1,scs，“SampleRate”, rxSampleRate);最小的FFT大小为SCS-SRsrRatio = rxSampleRate/(scs*1e3*ofdmInfo.Nfft);symbollength = ofdminfo . symbollength *srRatio;%调整定时偏移到SS块的开始。这一步删除% PSS搜索时引入参考网格的额外偏移量，在第二个OFDM符号中包含PSS。offset = offset + symbol长度(1);%定时偏移量被调整，以便接收的网格开始于帧头，即调整定时偏移之间的差异%是最强SSB的第一个符号，也是帧的开始burstStartSymbols = hSSBurstStartSymbols(burst.BlockPattern,burst.L_max);开始SSB命理学中的符号ssbFirstSym = burstStartSymbols(ssbIdx+1);%基于%调整整个子帧symbolsPerSubframe = length(symbollength);subframeOffset = floor(ssbFirstSym/symbolsPerSubframe);samplesPerSubframe = sum(symbollength);timinggoffset = offset - (subframeOffset*samplesPerSubframe);%如果不是整数，则调整剩余OFDM符号和四舍五入偏移量symbolOffset = mod(ssbFirstSym,symbolsPerSubframe);timingOffset = round(timingOffset - sum(symbollength1:symbolOffset));结束函数highlightSSBlock(refBurst,ssbIndex,commonNRB,scs,kFreqShift) scsSSB = scs(1);scsCommon = scs(2);确定常用命理学中SSB的频率起源边框= @(y,x,h,w)“位置”，[x+0.5 y-0.5 w h]，“EdgeColor”，“r”）;scsRatio = scsSSB/scsCommon;ssbFreqOrig = 12*(commonnnrb -20*scsRatio)/2+1+kFreqShift/(scsCommon*1e3);确定常用命理学中SSB的时间起源ssbStartSymbols = hSSBurstStartSymbols(refBurst.BlockPattern,refBurst.L_max);ssbHeadSymbol = ssbStartSymbols(ssbIndex+1)/scsRatio;ssbTailSymbol = floor((ssbStartSymbols(ssbIndex+1)+4)/scsRatio)-1;bounding_box (ssbFreqOrig ssbHeadSymbol 240 * scsRatio ssbTailSymbol-ssbHeadSymbol + 1);STR = sprintf(最强\n SSB: %d, ssbIndex);文本(str ssbHeadSymbol ssbFreqOrig-20 0,“字形大小”10“颜色”，' w '）结束