cfgHE = wlanHESUConfig;cfgHE。ChannelBandwidth =“CBW20”；%通道带宽cfgHE。NumSpaceTimeStreams = 2;%时空流的数量cfgHE。NumTransmitAntennas = 2;百分比的发射天线cfghe.apeplength = 1E3;％有效载荷长度以字节为单位cfgHE。ExtendedRange = false;%不要使用扩展范围格式cfgHE。Upper106ToneRU = false;%不要使用高于106音RUcfgHE。PreHESpatialMapping = false;% pre-HE字段空间映射cfghe.guardinterval = 0.8;保护间隔时间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;% NLOS的距离以米为单位tgaxChannel。ChannelBandwidth = chanBW;tgaxChannel。LargeScaleFadingEffect ='没有任何'；tgaxchannel.normalizechanneloutpuls = false;fs = wlansamplerge（cfghe）;TGAXCHANNEL.SAMPLEDE = FS;

SNR = 10：5：35;

maxNumErrors = 10;%一个信噪比点的最大包错误数maxNumPackets = 100;%一个信噪比点的最大包数

numsnr = numel（snr）;%信噪比点数numSNR packetErrorRate = 0 (1);%获取已占用子载波指标和OFDM参数ofdmInfo = wlanHEOFDMInfo ('他是数据', cfgHE);%从PPDU中提取字段的索引印第安纳州= wlanFieldIndices (cfgHE);％parcor = 1：numsnr％使用'par for'加速模拟为了isnr = 1: numSNR%每次迭代设置随机子流索引，以确保每个%迭代使用一组可重复的随机数流= RandStream ('幸福的陪审'，“种子”，99）;Stream.substream = ISNR;randstream.setGlobalstream（Stream）;%考虑噪声能量为零，因此信噪比定义为%活跃副载波packetSNR =信噪比(isnr) -10 * log10 (ofdmInfo.FFTLength / ofdmInfo.NumTones);% Loop模拟多个数据包numPacketErrors = 0;numPkt = 1;传输数据包的％索引而numPacketErrors < = maxNumErrors & & numPkt < = maxNumPackets%使用随机PSDU生成数据包psdulength = getpsdulength（cfghe）;% PSDU长度，以字节为单位txPSDU = randi([0 1]，psduLength*8,1);tx = wlanWaveformGenerator (txPSDU cfgHE);添加尾随零以允许通道延迟txpad = [tx;零（50，cfghe.numtransmitantannas）];％通过褪色室内TGAX通道重置（TGAXCHANNEL）;为不同的实现重置通道Rx = TGAXCHANNEL（TXPAD）;％通过AWGN通道传递波形rx = awgn (rx, packetSNR);包检测并确定粗包偏移量chanBW coarsePktOffset = wlanPacketDetect (rx);如果isempty（coarsepktoffset）%如果为空没有检测到L-STF;包错误numpacketerrors = numpacketerrors + 1;numpkt = numpkt + 1;继续；%进入下一个循环迭代结尾%提取L-STF并进行粗频偏校正lstf = rx (coarsePktOffset + (ind.LSTF (1): ind.LSTF (2)),:);coarseFreqOff = wlanCoarseCFOEstimate (lstf chanBW);rx = helperFrequencyOffset (rx, fs -coarseFreqOff);%提取非ht字段并确定精细数据包偏移量nonhtfields = rx (coarsePktOffset + (ind.LSTF (1): ind.LSIG (2)),:);finePktOffset = wlanSymbolTimingEstimate (nonhtfields chanBW);确定最后的数据包偏移量pktoffset = coarsepktoffset + finepktoffset;%如果数据包被检测出，且从%通道建模;包错误如果pktoffset> 50 numpacketerrors = numpacketerrors + 1;numpkt = numpkt + 1;继续；%进入下一个循环迭代结尾%提取L-LTF并进行精细的频率偏移校正rxlltf = rx（pktoffset +（ind.lltf（1）：Ind.lltf（2）），:);finefreqoff = wlanfinecfoestimate（rxlltf，chanbw）;rx = helperfrequencyOffset（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);[Chanest，Pilotest] = HeltfchanneLeStimate（HeltFdemod，Cfghe）;%数据解调rxData = rx (pktOffset + (ind.HEData (1): ind.HEData (2)),:);demodSym = wlanHEDemodulate (rxData,'他是数据', cfgHE);导频相位跟踪demodSym = heCommonPhaseErrorTracking (demodSym,成龙,cfgHE);估算HE领域的噪声功率据nvar = heNoiseEstimate (demodSym (ofdmInfo.PilotIndices,:,:),飞行员,cfgHE);从解调符号和信道中提取数据子载波%的估计demodDataSym = demodSym (ofdmInfo.DataIndices,:,);chanEstData =成龙(ofdmInfo.DataIndices,:,);%均衡和STBC合并[eqDataSym, csi] = heEqualizeCombine (demodDataSym chanEstData,据nvar, cfgHE);%恢复数据据nvar rxPSDU = wlanHEDataBitRecover (eqDataSym, csi, cfgHE,“LDPCDecodingMethod”，“layered-bp”）;%确定是否有任何位错误，即数据包错误packetError = ~ isequal (txPSDU rxPSDU);numPacketErrors = numPacketErrors + packetError;numpkt = numpkt + 1;结尾％计算SNR点的数据包错误率（每个）packeterrorrate（isnr）= numpacketerrors /（numpkt-1）;DISP（[“主持人”num2str（cfghe.mcs）”、“．..“信噪比”num2str(信噪比(isnr))．..“完成后”num2str (numPkt-1)'包，'．..“每:”num2str (packetErrorRate (isnr))));结尾

图;packetErrorRate semilogy(信噪比,“- *”）;抓住在；网格在；Xlabel（'snr（db）'）;ylabel ('每'）;dataStr = arrayfun (@ (x) sprintf (“MCS % d ', cfgHE x)。MCS,“UniformOutput”，错误的）;传奇（数据组织）;标题（Sprintf（'PER for HE Channel %s， %s， %s, PSDULength: %d'，tgaxchannel.delayprofile，cfghe.channelbandwidth，cfghe.channelcoding，cfghe.apeploding））;