qpsk在Rayleigh下的调制和解调，其中仿真了误码率，并和理论值进行了比较。-qpsk Rayleigh in the modulation and demodulation, the BER simulation. and the theoretical value and the comparison.

This m file analyzes a coherent binary phase shift keyed(BPSK) and a amplitude shift keyed(ASK) communication system. The receiver uses a correlator(mixer-integrator[LPF]) configuration with BER measurements comparing measured and theoretical results