How to Generate Band Limited Gaussian White Noise in MATLAB? In some papers, I read that the additive noise is band limited Gaussian white.
How can I simulate this type of noise use MATLAB?
You would generate bandlimited Gaussian noise by first generating white noise, then filtering it to the bandwidth that you desire. As an example:

% design FIR filter to filter noise to half of Nyquist rate
b = fir1(64, 0.5);
% generate Gaussian (normally-distributed) white noise
n = randn(1e4, 1);
% apply to filter to yield bandlimited noise
nb = filter(b,1,n);