sqrc.m

通信系统仿真原理与无线应用第五章平方根升余弦例子

%File: c5_sqrc.m

function h=sqrc(T,k,m,beta)

%T--symbol time
%k--samples per symbol
%m--delay is mT
%beta--bandwidth factor
%

n=0:2*m*k;
z=(n/k)-m+eps;
t1=cos((1+beta)*pi*z);
t2=sin((1-beta)*pi*z);
t3=1./(4*beta*z);
den=1-16*beta*beta*z.*z;
num=t1+t2.*t3;
c=4*beta/(pi*sqrt(T))
h=c*num./den;

%End of function file