[matlab] general function of communication signal modulation - generation of narrow-band Gaussian white noise

Catalog

Generation of narrow-band Gaussian white noise

---

Generation of narrow-band Gaussian white noise

function out = noise_nb(fc,B,N0,t)
% Output narrow band Gaussian noise samples
% with
% single-sided power spectrum N0
% carrier frequency equals fc
% bandwidth euqals B
dt = t(2)-t(1);
Fmx = 1/dt;
n_len = length(t);
p = (N0/2)*Fmx;% On  2016-04-13  Add in addition to  2, Source program does not .
rn = sqrt(p)*randn(1,n_len);
[f,rf] = T2F(t,rn);
[t,out] = bpf(f,rf,fc-B/2,fc+B/2);