Quantization levels of received symbol for viterbi decoder

Discussion in 'VHDL' started by sunil, Jan 8, 2004.

  1. sunil

    sunil Guest

    i am designing viterbi decoder. i have one problem. i am doing 3bit
    quantiser for quantizing the received symbols(noise addedsymbols). but
    my problem is from which number to which number i have to take as
    quantization level. either from 0 to 7 or -3 to 4. depending on those
    the branch metric is varying. which will give minimum metric as best
    metric. i am planning to calculate hamming distance.
    if any body have the idea on this please mail me.
    thank u.
    bye
     
    sunil, Jan 8, 2004
    #1
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  2. sunil

    Oleg Guest

    (sunil) wrote in message news:<>...
    > i am designing viterbi decoder. i have one problem. i am doing 3bit
    > quantiser for quantizing the received symbols(noise addedsymbols). but
    > my problem is from which number to which number i have to take as
    > quantization level. either from 0 to 7 or -3 to 4. depending on those
    > the branch metric is varying. which will give minimum metric as best
    > metric. i am planning to calculate hamming distance.
    > if any body have the idea on this please mail me.
    > thank u.
    > bye


    Hi,
    I am designing the same as you. If you plane to use Hamming distance
    then definitely use [0:7]. I have tested it and compared with Matlab's
    Viterbi.
    Good luck
     
    Oleg, Jan 15, 2004
    #2
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