>The PSD isn't in general periodic. The Fourier Transform is not in
>general periodic.
>
>The Fourier transform of uniform sampled discrete time wave forms is
>periodic.
What do you mean by "uniform sampled dscrete time wave"? I am samplying a
stochastic electric current every dt seconds...does that constitute what u
call a "uniform sampled time wave"? thanks
Reply by Stan Pawlukiewicz●February 21, 20062006-02-21
lebann wrote:
> Hi
>
> I am plotting the PSD using Wiener-Khintchin theorem (1). I recall from
> my signal processing course the the fourier transform is periodic with
> peroiod of 2 pi. Should the PSD be periodic since the wiener-khintchin
> theroem is essentialy a fourier transform? What should the perido be in
> general?
>
> PSD(f)=4*Integral[cos(2*pi*f*t)*Autocorrelation from -inf, +inf] (1)
wrt to f
The PSD isn't in general periodic. The Fourier Transform is not in
general periodic.
The Fourier transform of uniform sampled discrete time wave forms is
periodic.
>
> thanks!!
Reply by lebann●February 21, 20062006-02-21
Hi
I am plotting the PSD using Wiener-Khintchin theorem (1). I recall from
my signal processing course the the fourier transform is periodic with
peroiod of 2 pi. Should the PSD be periodic since the wiener-khintchin
theroem is essentialy a fourier transform? What should the perido be in
general?
PSD(f)=4*Integral[cos(2*pi*f*t)*Autocorrelation from -inf, +inf] (1)
thanks!!