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Re: [Discuss-gnuradio] LDPC in GNURadio

From: Philip Balister
Subject: Re: [Discuss-gnuradio] LDPC in GNURadio
Date: Wed, 19 Sep 2018 18:43:20 -0700
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On 09/19/2018 05:03 PM, Andrej Rode wrote:
> Hi Sylvain, 
> thanks for you thorough look into the state of the LDPC encoder/decoder.
> I just skip the long text of wall and answer your questions from my
> point of view:
>> So my questions would be :
>> (1) Is cleaning up the mess worth it ?
> I personally would like to see the FEC module cleaned up a bit. There is also 
> a
> viterbi decoder in gr-trellis which would be perfectly fine in gr-fec
> and using the gr-fec API. Maybe even porting in the specialized LDPC for
> gr-dtv would be possible for the parameters used in gr-dtv. (which does
> not mean you have to do so)
>> (2) Is completely breaking the API of those blocks acceptable ?
> For post-3.8 releases breaking the API for these blocks (and integrating
> them into the FEC API if they're not already there would be a big plus)
>> (3) Is adding a dependency to M4RI library to gnuradio acceptable ?
>> (possibly optional one, disabling LDPC if not present).
> Looking at M4RI is available in Ubuntu, Fedora and is probably easy to
> add to other Linux distributions/Windows etc etc. 
> It is "only" a math library and has no dependencies beside libc. 

I didn't find an OpenEmbedded recipe for M4RI, but a quick look at the
source suggest it will be easy enough to create a recipe. Give me some
warning if you go this path and I'll work on the recipe.


> Cheers
> Andrej
> _______________________________________________
> Discuss-gnuradio mailing list
> address@hidden
> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

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