Re: Signal Processing Help please..
- To: mathgroup at smc.vnet.net
- Subject: [mg43799] Re: [mg43755] Signal Processing Help please..
- From: YAT <yat at omrf.ouhsc.edu>
- Date: Mon, 6 Oct 2003 02:07:52 -0400 (EDT)
- Organization: OMRF
- References: <200310030628.CAA01263@smc.vnet.net>
- Reply-to: yat at omrf.ouhsc.edu
- Sender: owner-wri-mathgroup at wolfram.com
After Fourier transform, take the Re or Im parts and plot these.
ListPlot[Re[Fourier[s]]//Chop, PlotJoined->True, PlotRange->All]
OR
ListPlot[Im[Fourier[s]]//Chop, PlotJoined->True, PlotRange->All]
Yas
Marcos G. wrote:
> Hi guys,
> I am a new user of Mathematica 4.0 and I am trying to do some signal
> analyzis when I get some weird errors with Mathematica.
> Please, any help are welcome and I really appreciate it.
> What I want to do is:
>
> I have this PAM signal definition:
>
> s(t) = Sum(ak p(t-kT),k=0,k=15)
>
> {ak} is a binary sequence with k going from 0 to 15
> ak = {0010011010111100}
>
> And p(t) is a pulse:
>
> +------+
> | |
> | |
> +-------+ +-------+
> -1.5 -0.5 0 0.5 1.5 ---------------->
> t
>
> More details is attached in the notebook file.
> [contact the author to get the attachmenet -moderator]
>
> What I want to do is to get the Fourier Transform of the PAM signal
> s(t).
>
> The problem is that when I plot this fourier transform I am getting
> always:
>
> "is not a machine size real number...." and the plots comes empty, just
> with the axis.
>
> For me it seems ok, but I can't understand why is complaining.
>
> Thanks you all..
>
> Marcos
>
>
>
- References:
- Signal Processing Help please..
- From: "Marcos G." <NoSpam@yyy.com>
- Signal Processing Help please..