function?[channel]=Rayleigh_singlePath7（fcvtime_starttime_enddt）

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N0=16;%生成單徑的正弦波數(shù)目

dt=1;fc=2000;v=50;N=4*N0+2;c=3*10^8;fs=1000/dt;fm=（fc*10^6*v*10^3/3600）/c;
time_start=0;
time_end=1;
t=time_start:1/fs:time_end;n=1:N0;

wc=2*pi*fc;beta=pi*n/N0;

fn=fm*cos（2*pi*n/N）;factor=2/sqrt（N）;

xc=zeros（1length（t））;xs=zeros（1length（t））;k=0;

%改進型引入隨機相移