S1G通过TGah通道和AWGN的正确方法?

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迈克Dachui 2020年5月15日

哪条路是正确的通道 S1G 波形通过 TGah 通道和情况下？

我有两种方法，但不知道哪一种是正确的:( 2 x2米姆， TGah是' Pathloss和阴影 ”)

                    cfgS1G = wlanS1GConfig;
                   
                    cfgS1G。ChannelBandwidth =“CBW2”；% 2兆赫信道带宽
                   
                    cfgS1G。序言=“短”；%短暂的序言
                   
                    cfgS1G。NumTransmitAntennas = 2;% 2发射天线
                   
                    cfgS1G。NumSpaceTimeStreams = 2;% 2时空流
                   
                    cfgS1G。MCS = 3;
                   
                    txPSDU = randi([0 1]，cfgS1G.PSDULength*8,1);
                   
                    txWaveform = wlanWaveformGenerator (txPSDU cfgS1G);
                   
                    %创建并配置TGah通道
                   
                    tgahChannel = wlanTGahChannel;
                   
                    tgahChannel。DelayProfile =“f型”；
                   
                    tgahChannel。NumTransmitAntennas = cfgS1G.NumTransmitAntennas;
                   
                    tgahChannel。NumReceiveAntennas = 2;
                   
                    tgahChannel。TransmitReceiveDistance = 50;
                   
                    tgahChannel。ChannelBandwidth = cfgS1G.ChannelBandwidth;
                   
                    tgahChannel。LargeScaleFadingEffect =“Pathloss和阴影”；
                   
                    awgnChannel = comm.AWGNChannel;
                   
                    awgnChannel。NoiseMethod =“信噪比”；
                   
                    awgnChannel。信噪比= 20;

第一:

rxWaveform = awgnChannel (tgahChannel (txWaveform));

2号:

                    preChSigPwr_dB = 10 * log10(意味着(abs (tx)));
                   
                    sigPwr1 = 10 ^ (preChSigPwr_dB (1) -tgahChannel.info.Pathloss) / 10);
                   
                    sigPwr2 = 10 ^ (preChSigPwr_dB (2) -tgahChannel.info.Pathloss) / 10);
                   
                    sigPwr = [sigPwr1, sigPwr2];
                   
                    awgnChannel。SignalPower = sigPwr;
                   
                    rxWaveform = awgnChannel (tgahChannel (txWaveform));