cfgVHT = wlanVHTConfig;创建VHT传输配置cfgVHT。ChannelBandwidth =“CBW160”；%的带宽cfgVHT。MCS = 7;% 64-QAM，速率5/6numreceiveantenna = 2;%接收天线个数

cfgVHT。一个PEPLength = 4096;%字节cfgVHT。STBC = false;cfgVHT。numtransmitantenna = numreceiveantenna;cfgVHT。NumSpaceTimeStreams = numreceiveantenna;cfgVHT。SpatialMapping =“直接”；cfgVHT。GuardInterval =“长”；

testinputleveloffset = [-10 -9 -8 -7];% dB

maxNumErrors = 20;maxNumPackets = 200;

接收器最小输入电平灵敏度为20mhz，表21-25。的带宽增加一倍，灵敏度提高3dB。rxMinSensitivityTable = [-82 -79 -77 -74 -70 -66 -65 -64 -59 -57];% dBm给定MCS和带宽，获得最小输入灵敏度fs = wlanSampleRate(cfgVHT);基带采样率(Hz)B =楼层(10*log10((fs/20e6)));%带宽标量rxMinSensitivity = rxMinSensitivityTable(cfgVHT.MCS+1)+B;% dBmdisp ([“MCS的最低灵敏度”num2str (cfgVHT.MCS)”、“.．.num2str (fs / 1 e6)MHz:num2str (rxMinSensitivity' % 2.1 f '）dBm的])

testInputLevels = rxMinSensitivity+testInputLevelOffsets;% dBm

A = 10.^((testInputLevels-30)/20);电压增益(衰减)%A = A*sqrt(cfgvht . numtransmitantenna);%用于发电机缩放

Nf = 6;%噪音系数(dB)T = 290;%环境温度(K)BW = fs;%带宽(Hz)K = 1.3806e-23;%玻尔兹曼常数(J/K)噪声地板= 10*log10(k*T*BW)+NF;% dBdisp ([“接收机噪声地板:”num2str (noiseFloor + 30,' % 2.1 f '）dBm的])

awgnChannel = com . awgnChannel (“NoiseMethod”，“方差”，.．.“方差”10 ^ (noiseFloor / 10));

ind = wlanFieldIndices(cfgVHT);用于访问数据包中的字段chanBW = cfgVHT.ChannelBandwidth;rng (0);为可重复性设置随机状态agc = com . agc;自动增益控制S = numel(testInputLevels);packetErrorRate = 0 (S,1);rxAntennaPower = 0 (S,1);为i = 1:年代disp ([“模拟”num2str (testInputLevels(我),' % 2.1 f '）.．.dBm输入级…]);%循环模拟多个数据包numPacketErrors = 0;测量功率= 0 (maxNumPackets,1);%每根天线的平均功率numPkt = 1;%发送的报文索引而numPacketErrors<=maxNumErrors && numPkt<=maxNumPackets生成报文波形txPSDU = randi([0 1]，cfgVHT.PSDULength*8,1);% PSDULength(以字节为单位)tx = wlanWaveformGenerator(txPSDU,cfgVHT);将输入信号调整到所需的电平rx = tx.*A(i);测量天线连接器的平均功率，单位为瓦measuredPower(numPkt) = mean(mean(rx.*conj(rx)));在接收端添加噪声下限rx = awgnChannel(rx);%通过AGC传递每个通道为IC = 1:size(rx,2) rx(:， IC) = agc(rx(:， IC));重置(agc);结束包检测和确定粗包偏移coarsePktOffset = wlanPacketDetect(rx,chanBW);如果isempty (coarsePktOffset)%如果为空，未检测到L-STF;包错误numPacketErrors = numPacketErrors+1;numPkt = numPkt+1;继续；%转到下一次循环迭代结束提取L-STF并进行粗频偏校正lstf = rx(coarsePktOffset+(ind.LSTF(1):ind.LSTF(2))，:);粗freqoff = wlan粗secfoestimate (lstf,chanBW);rx = frequencyOffset(rx,fs，-粗freqoff);提取非ht字段并确定细包偏移量nonhtfields = rx(coarsePktOffset+(ind.LSTF(1):ind.LSIG(2))，:);finePktOffset = wlanSymbolTimingEstimate(nonhtfields,chanBW);确定最终数据包偏移量pktOffset = coarsePktOffset+finePktOffset;%如果检测到的数据包超出合理范围(>50个样本);数据包错误百分比如果pktOffset>50 numPacketErrors = numPacketErrors+1;numPkt = numPkt+1;继续；%转到下一次循环迭代结束提取L-LTF并执行精细的频偏校正lltf = rx (pktOffset + (ind.LLTF (1): ind.LLTF (2)),:);fineFreqOff = wlanFineCFOEstimate(lltf,chanBW);rx = frequencyOffset(rx,fs，-fineFreqOff);从波形中提取VHT-LTF样本，解调并执行%信道估计vhtltf = rx(pktOffset+(ind.VHTLTF(1):ind.VHTLTF(2))，:);vhtltfDemod = wlanVHTLTFDemodulate(vhtltf,cfgVHT);chanEst = whtltfchannelestimate (vhtltfDemod,cfgVHT);获得单个流通道估计chanEstSSPilots = vhtSingleStreamChannelEstimate(vhtltfDemod,cfgVHT);从波形中提取VHT数据样本vhtdata = rx(pktOffset+(ind.VHTData(1):ind.VHTData(2))，:);估计VHT数据场的噪声功率nEstVHT = vhtNoiseEstimate(vhtdata,chanEstSSPilots,cfgVHT);恢复VHT数据中传输的PSDUrxPSDU = wlanVHTDataRecover(vhtdata,chanEst,nEstVHT,cfgVHT，.．.“LDPCDecodingMethod”，“norm-min-sum”）;确定是否有任何位错误，即数据包错误。packetError = any(biterr(txPSDU,rxPSDU));numPacketErrors = numPacketErrors+packetError;numPkt = numPkt+1;结束计算输入水平点的包错误率(PER)packetErrorRate(i) = numPacketErrors/(numPkt-1);disp ([“完成后”.．.num2str (numPkt-1)' packets, PER: '.．.num2str (packetErrorRate (i))));计算每个天线的平均输入功率rxAntennaPower(i) = 10*log10(mean(measuredPower(1:(numPkt-1))))+30;disp ([测得的天线连接器功率:.．.num2str (rxAntennaPower(我),' % 2.1 f '）dBm的]);结束

图semilogy (rxAntennaPower packetErrorRate,“啊——”)举行在semilogy (rxMinSensitivity, 0.1,“处方”)当前lim = xlim(gca);Xlim ([currentxlim(1) currentxlim(2)+1])网格在包含(每天线连接器测量功率(dBm)）;ylabel (“每”）;传奇(“模拟PER性能”，“最小灵敏度下的最大PER”）;标题(sprintf (['最小输入灵敏度测试:MCS%d， %d MHz， '.．.“% d天线”, cfgVHT.MCS fs / 1 e6, cfgVHT.NumTransmitAntennas))