【MATLAB】通信信号调制通用函数 — 窄带高斯白噪声的生成

目录

窄带高斯白噪声的生成

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窄带高斯白噪声的生成

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;%于 2016-04-13 添加除 2，源程序没有。
rn = sqrt(p)*randn(1,n_len);
[f,rf] = T2F(t,rn);
[t,out] = bpf(f,rf,fc-B/2,fc+B/2);