Hello Everyone, I have gone through the gr-fec API and the relevant code for the GSoC project "Standardized high throughput FEC Code". I have also looked at the past projects which implemented other FEC Codes along with their VOLK Optimizations. I intend to focus on the implementation of standardized LDPC Codes for my project. I wanted to know if the community has any particular modifications or additions in mind with respect to LDPC Codes in gr-fec. I would then look into them and start working on my proposal.
Thanking You, Mayank. On Thu, Mar 7, 2019 at 10:17 PM Mayank Jhamtani <mayank26.bits...@gmail.com> wrote: > Hi Johannes, > Thank you for your detailed response. > > I would look into the two approaches you suggested, and get back once I > have something concrete. > I also welcome any suggestions as to which approach might be more suitable. > > -Cheers, > Mayank > > On Thu, Mar 7, 2019 at 2:42 PM Johannes Demel <de...@ant.uni-bremen.de> > wrote: > >> Hi Mayank, >> >> I'm glad you're interested in optimized codes. >> >> There are quite a lot of comms standards out there. They all come with >> their standardized codes. Unlike their general definition, standards use >> a small subset of all possible configurations a code might have. >> e.g. in general frozen bits in polar codes just need to have fixed >> values. In practice, frozen bits are all set to '0'. This simplifies >> decoders. Also, you could identify possible decoder functions that would >> benefit from specialization. This might be facilitated via templates or >> different implementations. Probably a combination of different >> techniques will be applied. >> >> This project may be approached in 2 different ways. Others may comment >> on these options. >> 1. Choose a specific standard code and implement it such that encoder >> and decoder exhibit maximum throughput/ minimum latency. >> 2. Find high performance implementations of standard codes and integrate >> them into the FECAPI. Make sure they seamlessly integrate into FECAPI. >> This might encompass discussions on how to integrate these >> implementations. Technical issues might come up but also license issues. >> Also, it would be challenging to add multiple new dependencies to GNU >> Radio. >> >> In most cases FEC in comms standards include: >> - encoder >> - decoder >> - puncturing >> - interleaver >> >> All in all, an information word goes into the encoder and a 'rate >> matched' codewords is emitted. On the decoder side a received vector >> represented as LLRs goes into the decoder and a decoded information word >> goes out. >> >> Clearly, the focus should be on the decoder in terms of performance >> because we expect this component to be the one with the heaviest load. >> Though, the other parts of the FEC standard should be implemented as well. >> >> Cheers >> Johannes >> >> >> Am 06.03.19 um 18:52 schrieb Mayank Jhamtani: >> > Hello all, >> > My name is Mayank, and I am interested to participate in GSoC'19 as a >> > student. >> > >> > I would want to work on the project "Standardized High Throughput FEC >> > Codes". This project interests me because I have been studying coding >> > theory for the past two years, and I would love to work on implementing >> > the same. I also have decent experience of coding in C++. >> > I am currently familiarizing myself with GNU Radio, and the gr-fec API >> > in particular. >> > >> > Also, I would be grateful if someone could clarify the exact expected >> > outcomes of the project idea, or give any other useful pointers, so >> that >> > I can better orient my efforts. >> > >> > Regards, >> > -Mayank >> > >> > _______________________________________________ >> > Discuss-gnuradio mailing list >> > Discuss-gnuradio@gnu.org >> > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> > >> _______________________________________________ >> Discuss-gnuradio mailing list >> Discuss-gnuradio@gnu.org >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> >
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