mIMO系统中STBC编码

%SNR in dB;
function [BERRaw_BER]=stbc_2t1r_bpsk_uncorr_Rayleigh（SNRSimBits）

%Generate source;
 T1_InforSource=randint（1SimBits/2[01]）;
 T2_InforSource=randint（1SimBits/2[01]）;

%BPSK modulation;
T1_InforSymbol=（T1_InforSource-0.5）*2;
T2_InforSymbol=（T2_InforSource-0.5）*2;

%STBC Tx2Rx2 encoding;
scale=sqrt（2）;%total power of all transmitters are normalized to 1;
T1_STBC_Symbol=[T1_InforSymbol;-T2_InforSymbol]/scale;
T1_STBC_Symbol=reshape（T1_STBC_Symbol1SimBits）;
T2_STBC_Symbol=[T2_InforSymbol;T1_InforSymbol]/scale;
T2_STBC_Symbol=reshape（T2_STBC_Symbol1SimBits）;

%Independent Rayleigh fading channel; h is constant between adacent
%symbols;
h1=sqrt（0.5）*（randn（1SimBits/2）+j*randn（1SimBits/2））;
h1=[h1;h1];
h1=reshape（h11SimBits）;
h2=sqrt（0.5）*（randn（1SimBits/2）+j*randn（1SimBits/2））;
h2=[h2;h2];
h2=reshape（h21SimBits）;
h=[h1;h2];

Raw_h=sqrt（0.5）*（randn（1SimBits）+j*randn（1SimBits））;

noise=sqrt（10^（-SNR/10.0）/2）*（randn（1SimBits）+j*randn（1SimBits））;
Raw_noise=sqrt（10^（-SNR/10.0）/2）*（randn（1SimBits）+j*randn（1SimBits））;

%Received signals with STBC;
Received_Symbol=sum（[T1_STBC_Symbol;T2_STBC_Symbol].*h1）+noise;%Note: noise power is just added at the receiver;