rx_qpsk_demod.m

对基本调制解调进行了详细的阐述,包括BPSK,QPSK,16QAM,64QAM

function demod_bits = rx_qpsk_demod(rx_symbols)

%************************* qpsk_demodulate *******************************
demod_bits = zeros(2*size(rx_symbols,1), size(rx_symbols,2));

bit0 = real(rx_symbols); 
bit1 = imag(rx_symbols);

demod_bits(1:2:size(demod_bits, 1),:) = bit0;
demod_bits(2:2:size(demod_bits, 1),:) = bit1;