Hi all -

I need to compute the distance spectrum for PCCC Turbo Codes with an
arbitrary puncturing matrix.  I have seen software that will compute
distance spectrum for the non-punctured case, but I can't seem to find
anything that will handle puncturing matrices.  Does anybody know either:

a)  A good (free) utility that can compute DS for a punctured code
b)  How I could do this myself (I am familiar with computing distance
spectrum in general, just not sure how puncturing will affect things).

Thanks in advance!

On Wednesday, October 29, 2008 1:59:36 PM UTC+1, awaters wrote:
> Hi all -
> 
> I need to compute the distance spectrum for PCCC Turbo Codes with an
> arbitrary puncturing matrix.  I have seen software that will compute
> distance spectrum for the non-punctured case, but I can't seem to find
> anything that will handle puncturing matrices.  Does anybody know either:
> 
> a)  A good (free) utility that can compute DS for a punctured code
> b)  How I could do this myself (I am familiar with computing distance
> spectrum in general, just not sure how puncturing will affect things).
> 
> Thanks in advance!

Hi,

This is regarding your question on distance spectrum of punctured codes. Are you able to solve this ? I am also facing the same problem.
Any help in this regard is highly appreciated.

Best Regards,
-SaiRamesh.

On Wed, 18 Jul 2012 11:42:44 -0700 (PDT), "sairamesh@gmail.com"
<nammisairamesh@gmail.com> wrote:

>On Wednesday, October 29, 2008 1:59:36 PM UTC+1, awaters wrote:
>> Hi all -
>> 
>> I need to compute the distance spectrum for PCCC Turbo Codes with an
>> arbitrary puncturing matrix.  I have seen software that will compute
>> distance spectrum for the non-punctured case, but I can&#39;t seem to find
>> anything that will handle puncturing matrices.  Does anybody know either:
>> 
>> a)  A good (free) utility that can compute DS for a punctured code
>> b)  How I could do this myself (I am familiar with computing distance
>> spectrum in general, just not sure how puncturing will affect things).
>> 
>> Thanks in advance!
>
>Hi,
>
>This is regarding your question on distance spectrum of punctured codes. Are you able to solve this ? I am also facing the same problem.
>Any help in this regard is highly appreciated.
>
>Best Regards,
>-SaiRamesh.

How big are the codewords?   If they're not enormous an exhaustive
search may work.


Eric Jacobsen
Anchor Hill Communications
www.anchorhill.com