p73.asv

现代通信系统书第一章程序(电子工业出版社)

N=24;M=8;m=3;
n=0:N-1;
x1=0.8.^n;
x2=[(n>=0)&(n<M)];
xn=x1.*x2;
stem(n,xn,'.');axis([0,length(n),0,1])
[xm,nm]=sigshift(xn,n,m);
stem(nm,xm,'.');axis([0,length(nm),0,1])