bandpass noise in MATLAB [hlp]

[No one]

bandpass noise

Hello Everyone;
I want to produce a bandpass noise in MATLAB/SIMULINK. How can I do it?

 

[Joatt]

band pass noise

If I remember correctly, there is a band-limited noise generator in Simulink. If that is what you want, Search for the term "noise" in Simulink window, and keep clicking "F3" button until you reach the mentioned component.

Regards

 

[No one]

bandpass noise matlab

Hello Joatt;
What's about m-files? Can we write an m-file which produces bandpass noise?

 

[Joatt]

bandpass filter noise matlab

That is doable too. Here is an example, where fcentral = 50Mhz, fupper = 52 MHz, flower = 48 Mhz, fstop = 70 Mhz:

Noise=0.7*(randn(size(t))); % Noise signal
fc = 50e6;
fup = 52e6;
flo = 48e6;
fs = 70e6;
Wp = [flo fup]/(fs/2); % normalized passband interval
Ws = [(fc/2) (fc+(fc/2))]/(fs/2); % normalized stopband interval
Rp = 3; % 3-dB attenuation at passband
Rs = 30; % 30-dB attenuation at stopband
[n,Wn] = buttord(Wp,Ws,Rp,Rs); % Butterworth filter
[b,a] = butter(n,Wn);
bandNoise = filter(b,a,Noise); % Band-limiting the noise

Note: this example is extracted from **broken link removed** with some modifications and additional comments.

Regards