channelgenerator2.m

Link & System-Level Wireless OFDM System Simulator Version

%The multipath channel matrix generator
%Using rayleighchan function in MATLAB
%chnums is the number of channel realizations
%fd is the Doppler frequency
%divn is the number of diversity branches
%t_rms is the delay spread in us
%The output is matrix ch, for channel impulse response
%by Yuanye Wang
%CTIF, Aalborg University
[e-mail]
%31-07-2006
%clear all;close all;
%clc;
%bug fixed for AWGN, yy on 22-October-2007
function ch = channelgenerator2(t_rms,fd,sampling_rate,N,cp_l,BW,chnums,divn)
if t_rms==0 && fd ==0,
    ch = ones(1,chnums,divn);
else
    Ch=raych2(chnums*divn,fd,t_rms,sampling_rate,N,cp_l,BW);
    for i=1:divn
        ch(:,:,i)=Ch(:,(i-1)*chnums+1:i*chnums);
        %save (sprintf('ch%d',i),'ch');
    end
end