FPGA Central

On 20 Aug 2003 07:21:59 -0700, [email protected] (Jon) wrote:

>Hello,
> I am new to DSP and digital communication as I understand for a
>given bandlimited communication channel designers use pulse shaping
>filters to shape the pulse to the bandwidth of the channel. The
>question I have has to do with the length of the pulse shaping filter
>vs. the symbol rate. After reading though some introductory digtial
>comm books I have yet to come across a good explaintion on how to
>choose the length of the filter, sample rate, and number of symbols
>that are being processed at a time in the filter. Is there any good
>reference on such topics.
>
>Thank you
>
>Jon

This is usually dependent on the details of what you're trying to
achieve. Things like the modulation type, modulation order, type of
filtering, cost of the components, etc., come into play.

If you are building a system it usually isn't too difficult to shake
these things out in simulation and perform the necessary tradeoffs.



Eric Jacobsen
Minister of Algorithms, Intel Corp.
My opinions may not be Intel's opinions.
http://www.ericjacobsen.org