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 <mailto: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>
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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 59257
www.telecom.tuc.gr/~gsklivanitis
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