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question about filters

Discussion in 'Electronic Basics' started by viswanath, May 17, 2004.

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  1. viswanath

    viswanath Guest

    Hi,
    I have to design a low pass filter in VHDL. How can one go about
    designing such a filter when the medium is event driven and time
    domain based??
    How should one decide on the filter characteristics if we just know
    the symbol time rate.
    If I am using standard VHDL and not AMS is it possible for me to
    design such a filter which is used in the recovery loops of receiver?
    Most of the references on filter and digital communications refer to
    frequency domain analysis. How can I go around this problem?
    If the input is a pulse then a low pass filter is an integrate and
    dump. However if I have a sampled sine wave how could I design a low
    pass filter? Could you please reply and let me know?
    I would grealty appreciate your reply.
    Looking forward to your replies,
    Thanks
    Viswanath
    PS: I would be needing a filter after the mixing of two sine waves to
    filter out the higher frequency components
     
  2. cirip

    cirip Guest

    Hi,

    You may want to post your question to comp.dsp news group. I guess what you
    are looking for is called digital signal processing.
    Take a look at http://www.dspguru.com/

    Cirip
     
  3. Marlboro

    Marlboro Guest

    what do you know about vhdl?
     
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