crmapping.m

OFDM系统仿真

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