gauss_filter.m

是GMSK-1DD的极好的仿真程序~~~~~仿真效果极佳

function gt=gauss_filter(Bb,Tb,fs)
%Bb=1000;
%Tb=1/4000;
%fs=10/Tb;
pi=3.14159;
Ts=1/fs;
N=8;
gt=zeros(1,N);
for i=0:N
   t=i/fs;
   gt(i+1)=(0.5*erfc(2*pi*Bb*(t-Tb/2)/(sqrt(log(2)))/sqrt(2))-0.5*erfc(2*pi*Bb*(t+Tb/2)/(sqrt(log(2)))/sqrt(2)));
end
gt1=gt(1:N+1);
gt2=fliplr(gt1);
gt=[gt2(1:N),gt1];