?? ch_noise.asv
字號:
% ch_noise (operate on recv)
% random noise defined by noise_level amplitude
if already_made_noise == 0 % only generate once and use for both QAM and OFDM
noise = (rand(1,length(recv))-0.5)*2*noise_level;
already_made_noise = 1;
end
recv = recv + noise;
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