
How to generate complex additive white Gaussian noise with the mean 0 and variance of σ^2 .
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Hi ,
I'm looking forward to generate the noise vector n ∼ CN(0,σ^2IN), where IN is the identity matrix of N*N.
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Parag
il 7 Mar 2025
Modificato: Parag
il 7 Mar 2025
Hi, you can generate noise vector n∼CN(0,σ
IN) in MATLAB using the following approach:

N = 10; % Size of the noise vector
sigma = 1; % Standard deviation (sqrt of variance)
% Generate complex Gaussian noise
n = (randn(N,1) + 1j * randn(N,1)) * (sigma / sqrt(2));
% Verify mean and variance
mean_n = mean(n)
var_n = var(n)
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