|Subject:||Re: [Discuss-gnuradio] Modifying code rate|
|Date:||Tue, 8 Mar 2016 08:14:53 +0100|
|User-agent:||Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.1.0|
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.
On 03/08/2016 02:16 AM, SangHyuk Kim wrote:
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