dsss_demodulation.m

直扩码分多址DS-CDMA是利用高速的WALSH正交码序列作为地址码

%**************************************************************************
%Function:DS-SS Demodulation   
% 功能：解扩解调
%function x = ds_demod(c,y)
%Input:c ---> user code (column vector)
%Input:y ---> tmp = c*x, y = tmp(:) (ds-ss modulated signal, column vector)
%Output:x ---> input signal (row vector)
%**************************************************************************
function x = DSSS_Demodulation(c,y)
tmp = reshape(y, length(c), length(y)/length(c));
tmp = tmp';
% x is a column vector
x = tmp * c;
% convert to row vector
x = x';