hard_4qam_demodul.m

信号处理

function  symb_hard =hard_4QAM_demodul(in_signal)


in_signal = in_signal*exp(j*pi/4);
if real(in_signal)>0
    if imag(in_signal)>0
        symb_hard = 1;
    else symb_hard = -1*i;
    end
else
    if imag(in_signal)>0
        symb_hard = i;
    else symb_hard = -1;
    end
end