根据蒙特卡罗仿真原理，用最小距离法对QPSK进行误码率仿真-According to the principle of Monte-Carlo，used the minimum distance method to start simulation of QPSK for BER simulation.

用蒙特卡罗法对瑞利信道误码率进行仿真，并和高斯信道对比(simulation about rayleigh channel,then compared to AWGN channel on BER.)