crdemapping.m

OFDM系统仿真

function [iout,qout]=crdemapping(idata,qdata,fftlen,nd)
if fftlen==1024
   iout(1:384,:)=idata(5:388,:);
   qout(1:384,:)=qdata(5:388,:);
   iout(385:768,:)=idata(638:1021,:);
   qout(385:768,:)=qdata(638:1021,:);
else
    if fftlen==512
       iout(1:192,:)=idata(5:196,:);
       qout(1:192,:)=qdata(5:196,:);
       iout(193:384,:)=idata(318:509,:);
       qout(193:384,:)=qdata(318:509,:); 
   else
       iout(1:26,:)=idata(2:27,:);
       qout(1:26,:)=qdata(2:27,:);
       iout(27:52,:)=idata(39:64,:);
       qout(27:52,:)=qdata(39:64,:);
   end
end