Re: [Discuss-gnuradio] GSOC - Introduction and Project Idea Discussion
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 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 > 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 >> > ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] GSOC - Introduction and Project Idea Discussion
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 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 > ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] GSOC - Introduction and Project Idea Discussion
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
[Discuss-gnuradio] GSOC - Introduction and Project Idea Discussion
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
