awgn_channel.m

[matlab]TD_SCDMA中的ZF_BLE和MMSE_BLE算法的链路仿真

%AWGN信道

function [AWGN_Signal,n0]=AWGN_Channel(Send_Signal,Eb_N0);  %Eb/N0 in dB
s=Send_Signal;
n=size(s);  %收到的比特数
AWGN_Signal=zeros(n(1),n(2));
eb_n0=10^(Eb_N0/10);
Eb=1;	
n0=Eb/eb_n0;%信道的噪声谱密度 
for ii=1:n(1),
noise=zeros(1,n(2));
x=randn(1,n(2))*n0;
noise=(x+i*x)/sqrt(2);             %加复的噪声
AWGN_Signal(ii,:)=s(ii,:)+noise;
end