cp0201_waveform.m

来自「用MATLAB仿真DS-BPSK超宽带通信系统性能(DS-UWB发射信号)」· M 代码 · 共 21 行

function [w0]=cp0201_waveform(fc,Tm,tau)
dt=1/fc;
OVER=floor(Tm/dt);
e=mod(OVER,2);
kbk=floor(OVER/2);
tmp=linspace(dt,Tm/2,kbk);
s=(1-4.*pi.*((tmp./tau).^2)).*exp(-2.*pi.*((tmp./tau).^2));
if e
    for k=1:length(s)
        y(kbk+1)=1;
        y(kbk+1+k)=s(k);
        y(kbk+1-k)=s(k);
    end
else
    for k=1:length(s)
        y(kbk+k)=s(k);
        y(kbk+1-k)=s(k);
    end
end
E=sum((y.^2).*dt);
w0=y./(E^0.5);