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Re: [Discuss-gnuradio] Question on gr-trellis PS and PI matricies in FSm
From: |
Eric Blossom |
Subject: |
Re: [Discuss-gnuradio] Question on gr-trellis PS and PI matricies in FSm |
Date: |
Thu, 1 Feb 2007 11:17:52 -0800 |
User-agent: |
Mutt/1.5.9i |
On Thu, Feb 01, 2007 at 12:51:03PM -0500, Achilleas Anastasopoulos wrote:
> Dear Tim,,
>
> indeed the current implementation supports only this kind of "regular"
> trellises.
> I believe the intruduction of non-regular trellises (ie, ones having
> exactly I outgoing edges from each state, but different incoming edges
> to each state) is a good idea.
>
> They way I think about it, I have to substitute the PS (and PI)
> internally generated matrix which is now of size SxI with a vector of
> size S where each element is a vector of size equal to the number of
> incoming edges in the particular state. Then a couple of minor
> modifications to the VA, and it is done...
>
> I am not sure how familiar you are with the code I developed in
> gr-trellis, but I am willing to help you make the modifications.
>
> Best
> Achilleas
Thanks to both of you!
Looking forward to having more great stuff in GNU Radio.
Eric