toa.m

来自「jake信道模型 的文章以及程序」· M 代码 · 共 37 行

%frequency-selective rayleigh fading channel

%Power-delay spectrum is modeled by an exponential pdf
%Arrival time is modeled by an uniform distribution

Mumean=50;%(ns)
pds=[];
Ptotal=0;
for Tk=1:1:200
    pdsTk=(1./Mumean).*exp(-Tk./Mumean);
    pds=[pds,pdsTk];
    Ptotal=Ptotal+pdsTk;
end
pds=pds./Ptotal;

figure
Tk=1:1:200;
plot(Tk,pds);
xlabel('Delay steps');
ylabel('Power')

N_path=3;
tao=round(rand(1,3).*199)+1

for k=1:200
      pds1(1,k)=~all(k-tao);  
end
     pds2=pds1.*pds;
     pds3=pds2./sum(pds2);
     
figure
stem(Tk,pds3);
xlabel('Delay steps');
ylabel('Power of 3 paths');