BPSK与QPSK调制解调系统的Matlab仿真程序；

发送滤波器与接收滤波器均为根升余弦滚降滤波器；

信道噪声为加性高斯白噪声；

绘制BPSK与QPSK调制下的误码率与信噪比曲线图，并与理论曲线进行对比。

-BPSK and QPSK modulation and demodulation systems Matlab simulation program　transmit and receive filters are root raised cosine filter roll-off filter　channel noise is additive white Gaussian noise　draw BER BPSK and QPSK modulation with a letter under noise ratio graph and compare with the theoretical curve.