cfgHE = wlanHESUConfig;cfgHE。ChannelBandwidth =“CBW20”;%通道带宽cfgHE。NumSpaceTimeStreams = 2;%的时空流cfgHE。NumTransmitAntennas = 2;%的发送天线数量cfgHE。一个PEPLength = 1e3;%载荷长度字节cfgHE。ExtendedRange = false;%不使用扩展范围的格式cfgHE。Upper106ToneRU = false;%不使用上106语气俄文cfgHE。PreHESpatialMapping = false;%的空间映射pre-HE字段cfgHE。GuardInterval = 0.8;%警卫队间隔时间cfgHE。HELTFType = 4;% HE-LTF压缩模式cfgHE。ChannelCoding =“方法”;%信道编码cfgHE。MCS = 3;%调制和编码方案

%创建和配置TGax通道chanBW = cfgHE.ChannelBandwidth;tgaxChannel = wlanTGaxChannel;tgaxChannel。DelayProfile =“b型”;tgaxChannel。NumTransmitAntennas = cfgHE.NumTransmitAntennas;tgaxChannel。NumReceiveAntennas = 2;tgaxChannel。TransmitReceiveDistance = 5;%在米距离了仿真结果tgaxChannel。ChannelBandwidth = chanBW;tgaxChannel。LargeScaleFadingEffect =“没有”;tgaxChannel。NormalizeChannelOutputs = false;fs = wlanSampleRate (cfgHE);tgaxChannel。SampleRate = f;

信噪比= 10:5:35;

maxNumErrors = 10;%的最大数据包数量错误的信噪比maxNumPackets = 100;%的最大数据包数量的信噪比

numSNR =元素个数(信噪比);%的信噪比点numSNR packetErrorRate = 0 (1);%获得占领副载波指数和OFDM参数ofdmInfo = wlanHEOFDMInfo (“数据”,cfgHE);% PPDU指数提取字段印第安纳州= wlanFieldIndices (cfgHE);% parfor isnr = 1: numSNR %使用parfor加快仿真为isnr = 1: numSNR%设置随机substream每迭代确保每个索引%迭代使用一组可重复的随机数字流= RandStream (“combRecursive”,“种子”,99);流。Substream = isnr;RandStream.setGlobalStream(流);%噪声能量占null信噪比是每个定义的%活跃副载波packetSNR =信噪比(isnr) -10 * log10 (ofdmInfo.FFTLength / ofdmInfo.NumTones);%循环模拟多个数据包numPacketErrors = 0;numPkt = 1;%指数数据包传输而numPacketErrors < = maxNumErrors & & numPkt < = maxNumPackets%生成一个随机PSDU包psduLength = getPSDULength (cfgHE);% PSDU长度字节txPSDU =兰迪([0,1],psduLength * 8, 1);tx = wlanWaveformGenerator (txPSDU cfgHE);% 0添加到允许通道延迟txPad = [tx;0 (50,cfgHE.NumTransmitAntennas)];%通过减弱室内TGax通道重置(tgaxChannel);%重置渠道不同的实现rx = tgaxChannel (txPad);%通过波形通过AWGN信道rx = awgn (rx, packetSNR);%包检测和确定粗包抵消chanBW coarsePktOffset = wlanPacketDetect (rx);如果isempty (coarsePktOffset)%如果空没有L-STF检测;包错误numPacketErrors = numPacketErrors + 1;numPkt = numPkt + 1;继续;%去下一个循环迭代结束%提取L-STF并执行粗频率偏移校正lstf = rx (coarsePktOffset + (ind.LSTF (1): ind.LSTF (2)),:);coarseFreqOff = wlanCoarseCFOEstimate (lstf chanBW);rx = frequencyOffset (rx, fs -coarseFreqOff);%提取non-HT领域并确定好包抵消nonhtfields = rx (coarsePktOffset + (ind.LSTF (1): ind.LSIG (2)),:);finePktOffset = wlanSymbolTimingEstimate (nonhtfields chanBW);%确定最终包抵消pktOffset = coarsePktOffset + finePktOffset;%如果给予包检测的范围从预期的延迟%信道建模;包错误如果pktOffset > 50 numPacketErrors = numPacketErrors + 1;numPkt = numPkt + 1;继续;%去下一个循环迭代结束%提取L-LTF并执行好频率偏移校正rxLLTF = rx (pktOffset + (ind.LLTF (1): ind.LLTF (2)),:);fineFreqOff = wlanFineCFOEstimate (rxLLTF chanBW);rx = frequencyOffset (rx, fs -fineFreqOff);% HE-LTF解调和信道估计rxHELTF = rx (pktOffset + (ind.HELTF (1): ind.HELTF (2)),:);heltfDemod = wlanHEDemodulate (rxHELTF,“HE-LTF”,cfgHE);(陈,飞行员)= heLTFChannelEstimate (heltfDemod cfgHE);%数据解调rxData = rx (pktOffset + (ind.HEData (1): ind.HEData (2)),:);demodSym = wlanHEDemodulate (rxData,“数据”,cfgHE);%试点阶段跟踪cfgHE demodSym = wlanHETrackPilotError (demodSym,陈,“数据”);他领域的%估计噪声功率据nvar = heNoiseEstimate (demodSym (ofdmInfo.PilotIndices,:,:),飞行员,cfgHE);%的副载波解调中提取数据符号和通道%的估计demodDataSym = demodSym (ofdmInfo.DataIndices,:,);chanEstData =成龙(ofdmInfo.DataIndices,:,);%均衡和结合方式[eqDataSym, csi] = heEqualizeCombine (demodDataSym chanEstData,据nvar, cfgHE);%恢复数据据nvar rxPSDU = wlanHEDataBitRecover (eqDataSym, csi, cfgHE,“LDPCDecodingMethod”,“layered-bp”);%确定任何比特错误,即数据包错误packetError = ~ isequal (txPSDU rxPSDU);numPacketErrors = numPacketErrors + packetError;numPkt = numPkt + 1;结束%计算包错误率在信噪比点(/)packetErrorRate (isnr) = numPacketErrors / (numPkt-1);disp ([“主持人”num2str (cfgHE.MCS)”、“…“信噪比”num2str(信噪比(isnr))…完成后的num2str (numPkt-1)“包”,…“每:”num2str (packetErrorRate (isnr))));结束

图;packetErrorRate semilogy(信噪比,“- *”);持有在;网格在;包含(“信噪比(dB)”);ylabel (“每”);dataStr = arrayfun (@ (x) sprintf (“MCS % d ',cfgHE.MCS x)“UniformOutput”、假);传奇(dataStr);标题(sprintf (对他的每个通道% s % s, % s, PSDULength: % d ',cfgHE.ChannelBandwidth tgaxChannel.DelayProfile cfgHE.ChannelCoding cfgHE.APEPLength));