shape.m

OFDM的仿真程序

function shaped_vals = shape(rec_symbol, Mr, U, N);
% shaped_vals = shape(rec_symbol, Mr, U, N);
%
% This function shapes the received symbols prior to demodulation.  This completes the
% decomposition of the channel into parallel subchannels.
%
%   rec_symbol - received symbol after IFFT block
%   Mr - # receive antennas
%   U - matrix of unitary matrices premultiplying MIMO subchannels
%   N - # OFDM subchannels

shaped_vals =[];
for i = 1:N
    shaped_vals = [shaped_vals; [U(:,(i-1)*Mr+1:i*Mr)]'*transpose(rec_symbol((i-1)*Mr+1:i*Mr))];
end

shaped_vals = transpose(shaped_vals);