cfgHE = wlanHESUConfig;cfgHE。ChannelBandwidth ='CBW20'；％ 信道带宽cfghe.numspacetimestreams = 2;%时空流的数量cfgHE。NumTransmitAntennas = 2;百分比的发射天线数量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upper 106 tone rucfgHE。PreHESpatialMapping = false;% pre-HE字段空间映射cfghe.guardinterval = 0.8;％保护间隔持续时间cfghe.heltftype = 4;％HE-LTF压缩模式cfghe.channelcoding ='ldpc'；％信道编码cfghe.mcs = 3;%调制和编码方案

％创建并配置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'；fs = wlanSampleRate (cfgHE);tgaxChannel。SampleRate = f;

SNR = 10：5：35;

maxNumErrors = 10;％SNR点的最大分组错误数maxNumPackets = 100;%一个信噪比点的最大包数

numsnr = numel（snr）;数量的SNR点数numSNR packetErrorRate = 0 (1);％获取占用子载波指数和OFDM参数ofdmInfo = wlanHEOFDMInfo (“数据”, cfgHE);％索引从PPDU中提取字段印第安纳州= wlanFieldIndices (cfgHE);％partsnr = 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％迭代使用可重复的随机数Stream = RANDSTREAM（'幸福父母'那'种子'，99）;Stream.substream = ISNR;randstream.setglobalstream（Stream）;％模拟了每个SNR点创建AWGN通道的实例Awgnchannel = comm.awgnchannel;awgnchannel.noisemethod =“信噪比”；Awgnchannel.signalpower = 1 / tgaxchannel.numreceiveantennas;％ocket用于空中的噪声能量，因此每次定义SNR％活动子载波awgnchannel.snr = snr（ISNR）-10 * log10（Ofdminfo.fftlength / ofdminfo.numtones）;% Loop模拟多个数据包numpacketerrors = 0;numpkt = 1;传输的数据包％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]，PSDULENG * 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 = awgnchannel（rx）;包检测并确定粗包偏移量coarsepktoffset = wlanpacketdetect（rx，chanbw）;如果isempty（coarsepktoffset）%如果为空没有检测到L-STF;数据包错误numpacketerrors = numpacketerrors + 1;numpkt = numpkt + 1;继续；％转到下一个循环迭代结尾％提取L-STF并执行粗略频率偏移校正lstf = rx（coarsepktoffset +（ind.lstf（1）：Ind.lstf（2）），:);coarsfreqoff = 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 = WlanyMboltimingEstime（非Hantfields，Chanbw）;确定最后的数据包偏移量pktoffset = coarsepktoffset + finepktoffset;％如果数据包检测到从预期延迟范围介绍％频道建模;数据包错误如果pktOffset>50 numPacketErrors = numPacketErrors+1;numpkt = numpkt + 1;继续；％转到下一个循环迭代结尾％提取L-LTF并执行细频偏移校正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);(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);％导频阶段跟踪Demodsym = hechommonphaseerrortracking（Demodsym，Chanest，Cfghe）;估计他领域的估计噪音力量nvarest = henoiseestimate（emodsym（Ofdminfo.pilotindices，：，:)，pilotest，cfghe）;从解调符号和信道中提取数据子载波％ 估计emoddatasym = remodsym（Ofdminfo.dataindices，：，:);chanestdata = chanest（Ofdminfo.dataindices，：，:);％均衡和STBC组合[eqDataSym, csi] = heEqualizeCombine (demodDataSym chanEstData,据nvar, cfgHE);％恢复数据rxpsdu = wlanhedatabitrocover（eqdatasym，nvarest，csi，cfghe，'ldpcdecodingmethod'那'分层BP'）;％确定是否有错误，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（['MCS'num2str（cfghe.mcs）”、“......'snr'num2str(信噪比(isnr))......'完成后'num2str（numpkt-1）'包，'......“每:”num2str (packetErrorRate (isnr))));结尾

数字;半径（SNR，Packeterrorrate，' -  *'）;持有在；网格在；Xlabel（“信噪比(dB)”）;ylabel（'每'）;dataStr = arrayfun (@ (x) sprintf ('MCS％D'，x），cfghe.mcs，'统一输出'、假);传奇(dataStr);标题(sprintf ('每个人的频道％s，％s，％s，psdulength：％d'，tgaxchannel.delayprofile，cfghe.channelbandwidth，cfghe.channelcoding，cfghe.apepltength））;