# Re: Latest Hackfest (discussion on trellis and RA codes)

**URL:** <https://www.ruby-forum.com/t/re-latest-hackfest-discussion-on-trellis-and-ra-codes/240329>\
**Category:** GNU Radio\
**Created:** [April 8, 2014, 6:33pm UTC](https://www.ruby-forum.com/t/re-latest-hackfest-discussion-on-trellis-and-ra-codes/240329 "2014-04-08T18:33:39Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Detlef\_R](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/58f4c7/32.png) [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\
**Post date:** [April 8, 2014, 6:33pm UTC](https://www.ruby-forum.com/t/re-latest-hackfest-discussion-on-trellis-and-ra-codes/240329/1 "2014-04-08T18:33:39Z")

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Miklos and Tom,

one option may be to merge the work that Miklos described with  
gr-trellis  
(or the other way around :-))  
Recall there was a discussion in the recent past of volk-ing the basic  
trellis algorithms such as VA and SISO.  
I believe the work that Miklos describes would be a wonderful way to  
start.

Also, Miklos, some of the functionality you are describing  
(interleaving,  
generation of codes, FSM structure, etc) is in gr-trellis.  
In the spirit of not duplicating efforts, would you consider a joint  
effort  
to refactor as much as possible into one module/API?

best  
Achilleas