qpsk仿真下面是该例子的源程序，P0、P1、P2分别是LOS路径和两条延迟瑞利分量的相对功率级。当p0=0且delay！=0时为瑞利频率选择性衰落，delay==0时为瑞利平坦衰落。-Here is the example qpsk simulation source, P0, P1, P2 are the LOS path Rayleigh component and two delayed relative power level. When p0 = 0 and the delay! = 0 for the Rayleigh frequency selective fading, delay == 0 when Rayleigh flat fading.