jens
9c60c50492
git-svn-id: http://moon:8086/svn/matlab/trunk@156 801c6759-fa7c-4059-a304-17956f83a07c
28 lines
548 B
Matlab
28 lines
548 B
Matlab
function odfm_wifi()
|
|
|
|
ndly = 16;
|
|
nmav1 = 48;
|
|
nmav2 = 64;
|
|
|
|
hdly = [zeros(1,ndly) 1];
|
|
hmav1 = ones(1,nmav1);
|
|
hmav2 = ones(1,nmav2);
|
|
|
|
x = 0.1*load_iq('/home/jens/mnt/cifs/Media/Raw/wifi_burst_5579999999_20000000_fc.wav');
|
|
|
|
xdly = filter(hdly, 1, x);
|
|
xc = x .* conj(xdly);
|
|
xc = filter(hmav1, 1, xc);
|
|
k = filter(hmav2, 1, abs(x).^2) + 1e-6;
|
|
N = length(xc);
|
|
|
|
plot(0:N-1, abs(xc)/nmav1*16, 0:N-1, abs(xc)./k); grid
|
|
|
|
function x = load_iq(name)
|
|
xw = audioread(name);
|
|
x = xw(:,1) + j*xw(:,2);
|
|
# x = randn(1,400) + j*randn(1,400);
|
|
endfunction
|
|
|
|
endfunction
|
|
|