qpskdemod.m

AOFDM系统matlab仿真程序

%Program 3-10
%qpskdemod.m
%
%Function to perform QPSK demodulation
%
%Copyed by lpch
%
function [demodata]=qpskdemod(idata,qdata,para,nd,ml);
%*********************** variables ***************************************
%idata : input Ich data
%qdata : input Qch data
%demodata: demodulated data(para-by-nd matrix)
%para  :Number of parrallel channels
%nd    : Number of data
%ml    : Number of modulation levels
%(QPSK-2 16QAM-4)
%************************************************************************
demodata=zeros(para,ml*nd);
demodata((1:para),(1:ml:ml*nd-1))=idata((1:para),...
        (1:nd))>=0;
demodata((1:para),(2:ml:ml*nd))=qdata((1:para),...
        (1:nd))>=0;
%************************** end of file **********************************