MIMO-OFDM信道仿真

%------------------------------------------
% EE359 final project Fall 2002
% Channel estimation for a MIMO-OFDM system
% By Shahriyar Matloub               
%------------------------------------------

clear all;
%close all;
i=sqrt（-1）;
Rayleigh=1;
AWGN=0;                             % for AWGN channel 
MMSE=0;                             % estimation technique
Nsc=64;                             % Number of subcarriers
Ng=16;                              % Cyclic prefix length
SNR_dB=[0 5 10 15 20 25 30 35 40];  % Signal to noise ratio
Mt=2;                               % Number of Tx antennas
Mr=2;                               % Number of Rx antennas
pilots=[1:Nsc/Ng:Nsc];              % pilot subcarriers 
DS=5;                              % Delay spread of channel
iteration_max=200;

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% Channel impulse response %
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if （Rayleigh）
    N=50;
    
    fm=100;
    B=20e3;
    fd=（rand（1N）-0.5）*2*fm;
    theta=randn（1N）*2*pi;