%------------------------------------------
%?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;

%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%?Channel?impulse?response?%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%

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