# Viterbi soft-decoding

Started by December 22, 2007
how does Viterbi soft-decoding work? Also suppose rate R=1/2, constraint
length is 3, convolutional code(2,1,3). Thank you very much.

ssohaib wrote:

> how does Viterbi soft-decoding work?
It works very well.
> Also suppose rate R=1/2, constraint > length is 3, convolutional code(2,1,3). Thank you very much.
Your "thank you" means a lot. You don't have to thank, the \$100 of gratitude will be just all right. VLV
On Sat, 22 Dec 2007 05:51:52 -0600, "ssohaib" <ssohaib@gmail.com>
wrote:

>how does Viterbi soft-decoding work? Also suppose rate R=1/2, constraint >length is 3, convolutional code(2,1,3). Thank you very much.
By adding a confidence level to each input the decoder can do a better job of estimating the transmitted sequence. Eric Jacobsen Minister of Algorithms Abineau Communications http://www.ericjacobsen.org
can u plz tell me how to add such a confidence level?

Regards.
On Sat, 22 Dec 2007 11:55:23 -0600, "ssohaib" <ssohaib@gmail.com>
wrote:

>can u plz tell me how to add such a confidence level? > >Regards.
Googling "Viterbi soft decision" provides a number of useful references, which I would have expected someone to do before asking here. If you have specific questions after doing some research then that's fine, but few here have the time or patience to explain a detailed topic from first principles. The links you'll find from Google are much better for that, or a good communications book. Eric Jacobsen Minister of Algorithms Abineau Communications http://www.ericjacobsen.org
ssohaib wrote:
> can u plz tell me how to add such a confidence level? > > Regards.
Have you tried finding answer? Have you Googled? (100+,4000+,565k hits depending on terms) en.wikipedia.org has dozens of references itself How about complete words? c http://users.erols.com/jyavins/procfaq.htm and its links
ssohaib wrote:
> can u plz tell me how to add such a confidence level? > > Regards.
Be bloody bold and resolute, Laugh to scorn, The power of Gaussian noise. Steve