> > On 16.06.2015 08:26, bob wole wrote: > > Hi, > > > > I just stared working on FEC in gnuradio. I found that there is > > gr-fec. I want to know that which literature , books/papers, was > > followed during the implementation of the gr-fec so that I can go > > through the c++ implementation more productively and add > > something. > > > > > > -- Bob > > > - > > > Hi, > > > > I just stared working on FEC in gnuradio. I found that there is gr-fec. > I > > want to know that which literature , books/papers, was followed during > the > > implementation of the gr-fec so that I can go through the c++ > > implementation more productively and add something. > > > > > > -- > > Bob > > > > Hi Bob, > > Have a look at the manual. The API itself is quite well described I think: > > http://gnuradio.org/doc/doxygen/page_fec.html > > It doesn't cover the very recently added TPC and LDPC implementations. > http://gnuradio.org/doc/doxygen/classgr_1_1fec_1_1ldpc__decoder.html > http://gnuradio.org/doc/doxygen/classgr_1_1fec_1_1ldpc__decoder.html > http://gnuradio.org/doc/doxygen/classgr_1_1fec_1_1tpc__encoder.html > http://gnuradio.org/doc/doxygen/classgr_1_1fec_1_1tpc__decoder.html > > Those could use work on their documentation. > > We're also about to merge in another approach to LDPC encoding and decoding > based on Tracie Perez's GSoC work. You can see the wip branch here: > > https://github.com/trondeau/gnuradio/tree/fec/ldpc_methods > > And the GSoC presentations: > http://www.trondeau.com/grcon2013-presentations#gsoc-perez > http://www.trondeau.com/grcon2013-presentations#gsoc-manu > > Johannes Demel is working on polar codes this summer. > > What's your particular interest in FEC? Are you looking to use it or > implement other codes not already in gr-fec? For the FEC API itself, there > is no other reference than the manual page and a presentation from the > original author at our GRCons: > > http://www.trondeau.com/grcon14-presentations#tut-mccarthy > http://www.trondeau.com/grcon2013-presentations#tut-mccarthy > > Tom >
Hi Tom, Thanks for the links. I am targeting Turbo Codes mainly for short frame size. I found one presentation on turbo codes http://gnuradio.squarespace.com/storage/grcon14/presentations/Sep18_02_Karra_TurboCodes.pdf but I could not find its source code in gnuradio. Are Turbo codes implemented in gnuradio? if yes, in which version can I find it? One more question, I am targeting short frame length burst, currently which FEC in gnuradio can give me best gain in this case? -- Bob
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