Re: [Discuss-gnuradio] LDPC in GNURadio

[CEL]

Moin Johannes,

forgot to get back to you.
Yep, that sounds mightily interesting.
Thanks for bringing this up!
If we need to bring the project into a state of usability as a library,
we might as well upstream that and then lobby for inclusion as package
in the mainstream Linux distros, if it's really that reliable.
Do you happen to have a point of contact with the devs?

Best regards,
Marcus

On Thu, 2018-09-20 at 19:03 +0000, Johannes Demel wrote:
> Hi Marcus,
> 
> I've used it in the past. The developers seem to have reorganized the code 
> since though. Anyways, the whole library is written in C++11 and some Python 
> plotting tools are provided. Also, it is easy to install and their benchmark 
> output seems to be valid. Also, code performance is really good. I've not 
> used it as a library yet. That seems to be a new use case. All in all just a 
> couple of thoughts on it.
> 
> Cheers
> Johannes
> 
> ________________________________________
> Von: Müller, Marcus (CEL) <address@hidden>
> Gesendet: Donnerstag, 20. September 2018 16:17:13
> An: address@hidden; Johannes Demel; address@hidden; address@hidden
> Cc: address@hidden
> Betreff: Re: [Discuss-gnuradio] LDPC in GNURadio
> 
> Hi Johannes,
> you don't happen to have first-hand experience with that library?
> 
> Best regards,
> Marcus
> On Thu, 2018-09-20 at 07:50 +0000, Johannes Demel wrote:
> > Hi all,
> > 
> > would it be an option to add a specialized library to GR for LDPC
> > code? 'aff3ct' [0] would be one library that comes to my mind. Of
> > course, they might have a different approach to decoders in general.
> > Also, at this point this might be a "compile your own dependency"
> > library. Anyways, it might be worth to have a look at it.
> > 
> > Cheers
> > Johannes
> > 
> > [0] https://github.com/aff3ct/aff3ct
> > 
> > ________________________________________
> > Von: Discuss-gnuradio <
> > address@hidden> im Auftrag
> > von Philip Balister <address@hidden>
> > Gesendet: Donnerstag, 20. September 2018 03:43:20
> > An: Andrej Rode; Sylvain Munaut
> > Cc: GNURadio Discussion List
> > Betreff: Re: [Discuss-gnuradio] LDPC in GNURadio
> > 
> > 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.
> > 
> > Philip
> > 
> > > 
> > > Cheers
> > > Andrej
> > > 
> > > 
> > > 
> > > _______________________________________________
> > > Discuss-gnuradio mailing list
> > > address@hidden
> > > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
> > > 
> > 
> > 
> > _______________________________________________
> > Discuss-gnuradio mailing list
> > address@hidden
> > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio