Prev: Mex file crashes on second run
Next: Student Ed. of MATLAB 5 for the Mac, Prentice Hall
From: Micik on 5 May 2008 15:38
Hello to all,
is there any MATLAB function which can simulate white noise. I'm
reading one theory book in which there is example where signal
containes additive white noise. I 'm not sure how to model that in
Matlab.
Any advices?
From: NZTideMan on 5 May 2008 16:02
On May 6, 7:38 am, Micik <brob...(a)yahoo.com> wrote:
> Hello to all,
> is there any MATLAB function which can simulate white noise. I'm
> reading one theory book in which there is example where signal
> containes additive white noise. I 'm not sure how to model that in
> Matlab.
> Any advices?

help randn
From: Greg Heath on 5 May 2008 16:55
On May 5, 4:02 pm, NZTideMan <mul...(a)gmail.com> wrote:
> On May 6, 7:38 am, Micik <brob...(a)yahoo.com> wrote:
>
> > Hello to all,
> > is there any MATLAB function which can simulate white noise. I'm
> > reading one theory book in which there is example where signal
> > containes additive white noise. I 'm not sure how to model that in
> > Matlab.
> > Any advices?
>
> help randn

P0 = mean(s0.*s0);
s = s0 + sqrt(P0/SNR)*randn(N,1);
P = mean(s.*s);

P0 and P will approach theoretical values
as N --> inf.

Hope this helps.

Greg
 | 
Pages: 1
Prev: Mex file crashes on second run
Next: Student Ed. of MATLAB 5 for the Mac, Prentice Hall