Yeah, I think benchmark_rate doesn't even use FEC. Cheers, Martin
On 03/07/2016 11:14 PM, Marcus Müller wrote: > Ah! There's samples per symbol (which I think you're reffering to) and > "code rate", which is a term from channel coding theory. Don't confuse > the two! > > So, the minimum samples per symbol is indeed 2 (everything below > wouldn't really have a pulse shape). > If you want higher data rate, increase the sampling rate. > > Your questions really indicate that it might really make sense to > slightly improve your digital communications basics. I think you should > really take the time to read about modulation, constellations, pulse > shaping, memoryless channels, symbol error rates, bit error rates, > noise, SNR, Eb/N0..., i.e. the first half of a textbook on digital > communications. None of what we've discussed are really GNU Radio > problems, but things you'd directly deduct from a solid understanding of > the theory beneath. Getting that understanding will of course take time, > but not having that understanding costs you at least that much time, too. > > Best regards, > Marcus > > On 03/08/2016 02:16 AM, SangHyuk Kim wrote: >> Dear Martin. >> >> In benchmark_tx.py example, I want to transmit packet by maximum bit rate. >> >> As I know, 1/2 is default coding rate. So, I can't achieve higher speed. >> >> So, my question : >> - How can I modify coding rate (default 1/2) ? >> In other word, which source file handle coding rate ? >> >> Thanks >> >> 2016-03-08 6:20 GMT+09:00 Martin Braun <[email protected] >> <mailto:[email protected]>>: >> >> SangHyuk, >> >> you'll need to provide some more detail on what you're asking, >> what you >> want to achieve, what you're using... etc. >> >> Cheers, >> M >> >> On 03/06/2016 05:43 PM, SangHyuk Kim wrote: >> > Hi all. >> > >> > I want to use high code rate for high throughput >> > >> > But, I can't find proper block to do. >> > >> > Can I change code rate using GNU radio? >> > >> > Also, is it possible using benchmark_tx.py (one of the example file >> > provided) ? >> > >> > Thanks. >> > >> > >> > _______________________________________________ >> > Discuss-gnuradio mailing list >> > [email protected] <mailto:[email protected]> >> > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> > >> >> >> _______________________________________________ >> Discuss-gnuradio mailing list >> [email protected] <mailto:[email protected]> >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> >> >> >> >> _______________________________________________ >> Discuss-gnuradio mailing list >> [email protected] >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > _______________________________________________ Discuss-gnuradio mailing list [email protected] https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
