这个源程序代码包提供了通信系统中BPSK,QPSK调制解调方式 用matlab的实现，误码率性能-The source code package provides a communication system BPSK, QPSK modulation and demodulation method using matlab implementation, bit error rate performance

QPSK信号的调制及解调实验，使用MATLAB语言实现-QPSK signal modulation and demodulation, using the MATLAB language