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.

一个简单的,bpsk,qpsk,QAM16的解调和调制的matlab仿真,特别适用用初学者-a simple, bpsk, qpsk, QAM16 the modulation and demodulation of Matlab simulation, particularly applicable with beginners