Thanks, Tom! Yeah, I have avoided the MPSK SNR blocks because I figured they were specific to PSK.
Very Respectfully, Dan CaJacob On Thu, Dec 19, 2013 at 10:30 AM, Tom Rondeau <t...@trondeau.com> wrote: > On Mon, Dec 16, 2013 at 11:22 PM, Dan CaJacob <dan.caja...@gmail.com> > wrote: > > I'd like to report some signal metrics for satellite downlinks. SNR > would > > seem to be one example, but most algorithms I see for SNR assume that you > > are generating a signal from a separate clean signal and noise source, > each > > with known power. What I have are recordings of real, narrow-band, > digital > > FM signals. I don't have a very strong DSP background. > > > > Can anyone point me to a good textbook that covers such practical > > applications? > > > > Thanks for your help! > > Hi Dan, > > SNR estimations are quite tricky in real life. If you look at the > digital::mpsk_snr_est blocks, there are multiple implementation inside > that do SNR estimations for M-ary PSK constellations. The different > algorithms have varying accuracy and (mostly) proportional complexity. > But as the name implies, this won't work for FM. > > Looking at Google, I found a short paper from Virginia Tech, > co-authored by Steve Ellingson. I know Steve a bit, though he came > just as I was finishing up my work there, and he tends to be pretty > good with these things. So it's likely a good start mathematically for > what you need. > > http://www.ece.vt.edu/swe/asmr/docs/ASMR_R16_Kumar2.pdf > > Tom >
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