It'll probably ball park the figure. You can then cross-validate it with the error rate.
On Wed, Jul 6, 2011 at 11:50 AM, George Sklivanitis < george.sklivani...@gmail.com> wrote: > ** > On 7/6/11 8:20 PM, Colby Boyer wrote: > > One method would be to use a single pole IIR filter to get an average of > the noise floor energy, and compare that with the average symbol energy. > > On Wed, Jul 6, 2011 at 6:49 AM, George Sklivanitis < > george.sklivani...@gmail.com> wrote: > >> Hello all, >> >> Lately, I am experimenting with a point-to-point SDR link where my >> transmitter uses On-Off Keying modulation while the receiver follows >> techniques for efficient signal processing and detection (non-coherent, >> coherent). My major problem is how can I measure the input SNR as a ratio of >> the power of the received signal to the power of noise, given also that we >> ignore the quantity of NF (Noise Figure). >> >> Thank you in advance for your concern, >> >> GS >> >> >> -- >> Sklivanitis Georgios >> M.Sc. Student >> Telecommunications Division, >> Department of Electronics and Computer Engineering >> Technical University of Crete, >> Kounoupidiana Campus, Office 145.A10 >> Chania, Crete, 73100, Greece >> Tel. : 28210 59257 >> www.telecom.tuc.gr/~gsklivanitis<http://www.telecom.tuc.gr/%7Egsklivanitis> >> >> >> _______________________________________________ >> USRP-users mailing list >> usrp-us...@lists.ettus.com >> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >> > > Hello again, > > Could it be sufficient enough to say that we measure the noise's variance > as the variance of the data captured when nobody transmits in the desired > frequency and then the ratio of the received signal energy to the noise's > energy plus 1 will give us the estimated Signal-to-Noise ratio? > > Thanks, > GS > > -- > Sklivanitis Georgios > M.Sc. Student > Telecommunications Division, > Department of Electronics and Computer Engineering > Technical University of Crete, > Kounoupidiana Campus, Office 145.A10 > Chania, Crete, 73100, Greece > Tel. : 28210 59257www.telecom.tuc.gr/~gsklivanitis > >
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