Hi Brennan, This is great. I am curious, has this been released or you are still working on it?
Thanks Milos On Thu, 31 Jan 2019 at 20:35, Brennan Ashton <bash...@brennanashton.com> wrote: > In addition to what Ron mentioned there is an FPGA implementation of the > LDPC portion of DVB-S2 that I will be releasing late February (I hoped to > be ready to relase it by FOSDEM, but work got in the way) which achieves > the full bitrate. The initial release will not be integrated with RFNoC, > but that could be added at a later date. Right now it is mostly running on > the Ultra96 board. > > --Brennan > > On Thu, Jan 31, 2019, 11:56 AM Ron Economos <w...@comcast.net wrote: > >> The processing requirement for DVB-S2 are significant, especially the >> receiver. Since you're using an X-series USRP, I'll guess you're >> interested in satellite downlinks which can be 30 to 50 Msyms/s. >> >> Basically, the requirement would be the most powerful system you can >> afford. Something with an Intel i9 or Xeon Gold/Platinum series processor. >> >> Even then, real-time processing for the receiver will be limited unless >> you use an FPGA or GPU for the LDPC decoding. >> >> The good news is that I've ported an SIMD optimized LDPC decoder to GNU >> Radio. >> >> https://github.com/drmpeg/gr-dvbs2rx >> >> Which is ported from: >> >> https://github.com/xdsopl/LDPC >> >> However, it's still not capable of satellite bitrates. >> >> Ron >> >> On 1/31/19 10:33, Maria Jesus Cañavate Sanchez wrote: >> > Hi there! >> > >> > My name is Maria and I would like to make a question regarding the >> > kind of PC characteristics which would be required to be able to >> > process the signal in real-time (on the PC) when using the maximum >> > bandwidth available on the USRP X-series. >> > >> > The scenario would be the following one: we would like to use GNU >> > radio to send and receive DVB-S2 signals. Hence, the PC will do all >> > the processing to check the BER, constellation, EVM, etc. Do you think >> > it is possible to use a PC (with SSD drive and some suggested >> > requirements) which could do the processing in real time or the only >> > way to achieve that bandwidth in real time would be using the FPGA of >> > the USRP? If the second case, then I guess we will do the processing >> > off-line =) >> > >> > Thank you very much in advance! >> > >> > Best regards, >> > >> > Maria Jesus >> > >> > _______________________________________________ >> > 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 > -- *Dr. Milos Milosavljevic* Communications DSP/FPGA Engineer *Spire Global UK Limited* Unit 5A, Sky Park 5, 45 Finnieston Street, Glasgow, G3 8JU United Kingdom *+44 (0)1413 439 <+44%207881%20295658>146* *+44 (0)7954 161 6 <+44%207881%20295658>79*
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