untitled22222.m

uwb的信号产生以及几种调制方法

Tc=0.5e-9;
Taw=0.2333e-9;
A=1;
t1=0:0.01e-9:1e-9;
a1=4.*pi.*((t1-Tc)./Taw).^2;
a2=exp(-2.*pi.*((t1-Tc)./Taw).^2);
s=(1-a1).*a2;
 
t2=0.01e-9:10e-9;
k=5;
a=0.7;
K=(1-k)./(1+k);
X=exp(-K.*a.*t2./2);
x1=[1 zeros(1,t2-1)];
x2=4.*k.*exp(-a.*t2)./(1-k.^2);
x3=K.*X./2+(1-K)./2.*K-a.*t2.*X./4;
r=K.*x1+x2.*x3;

w=conv(s,r);
plot(w);