[matlab] matlab simulation - narrow band Gaussian white noise

Catalog

1、 Narrow band Gaussian white noise

2、 Program run results

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1、 Narrow band Gaussian white noise

close all;
clear all;
clc;
fm = 1;
B = 2*fm; % bandwidth 
fc = 10; % Carrier center frequency 
dt = 0.001; % Time sampling interval 
T = 5000; % Signal duration 
t = 0:dt:T;% Time range 
% Generate narrow-band Gaussian white noise 
N0 = 0.1; % White noise unilateral power spectral density 
noise = noise_nb(fc,B,N0,t);
fprintf(' The mean value of noise is ： %d\n  The power of the noise is ： %d\n',mean(noise),var(noise));
figure;
subplot(211);
L=5*1e3;
plot(t(1:L),noise(1:L),'b');