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.LARGESCALEFADEFFECT ='没有任何';tgaxchannel.normalizechanneloutpuls = false;fs = wlansamplerge（cfghe）;TGAXCHANNEL.SAMPLEDE = FS;

SNR = 10：5：35;

maxNumErrors = 10;％SNR点处的最大数据包错误数maxNumPackets = 100;％SNR点的最大数据包数

numsnr = numel（snr）;％SNR点数numSNR packetErrorRate = 0 (1);％获得占用子载波指数和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％迭代使用可重复的随机数Stream = randstream（'幸福的陪审'那'种子'，99）;Stream.substream = ISNR;randstream.setGlobalstream（Stream）;％ocket用于null中的噪声能量，因此每次定义SNR％活动子载波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）），:);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 = Wlanymboltimingestimate（非Hantfields，Chanbw）;确定最后的数据包偏移量pktoffset = coarsepktoffset + finepktoffset;％如果数据包检测到来自的预期延迟范围％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并执行精细频率偏移校正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）;％导频阶段跟踪Demodsym = HeCommOnphaseErrortracking（Demodsym，Chanest，Cfghe）;估计他领域的噪音力量nvarest = henoiseestimate（remodsym（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))......'后完成'num2str（numpkt-1）'包，'......“每:”num2str (packetErrorRate (isnr))));结尾

数字;半机（SNR，Packeterrorrate，' -  *'）;抓住在;网格在;Xlabel（'snr（db）'）;ylabel（'每'）;dataStr = arrayfun (@ (x) sprintf ('MCS％D'，x），cfghe.mcs，'统一输出'，错误的）;传奇（数据组织）;标题（Sprintf（“每个人都是频道％s，％s，％s，psdulength：％d'，tgaxchannel.delayprofile，cfghe.channelbandwidth，cfghe.channelcoding，cfghe.apeploding））;