Introduction - If you have any usage issues, please Google them yourself
%Qammodem. M program list
%The coding mapping process of 4-bit original data and constellation is simulated;
%Complete the modulation and demodulation of 16QAM signal;
%Baseband signal symbol rate PS = 1Mbps;
%Roll off factor of shaping filter a = 0.8;
%Carrier signal frequency fc = 2MHz;
%Sampling frequency FS = 8MHz;
%Draw the spectrum and time domain waveform of 16QAM signal;
%The coherent demodulation method is used to simulate the demodulation process;
%Time domain waveform of baseband signal before and after demodulation is drawn;
%Write the original baseband data, QAM adjusted data and filter coefficient into the corresponding text file.