Re: [Discuss-gnuradio] How to calculate SNR?

[Martin Braun]

On 03/25/2014 11:04 PM, zielalaoui wrote:
> Hi azza and Martin,
> I have the same problem, that is my flowgraph.
> <http://gnuradio.4.n7.nabble.com/file/n47201/SNR_rx.jpg> 
> The SNR values have not sens. For example, with 0.065 transmitting power i
> had values between 0.06 and -0.012. may be the problem is how to use the
> block in the flowgraph. 
> I appreciate your help
> Zakaria 

Well, you need to provide valid PSK symbols.
Have a look at gr-digital/examples/snr_estimators.py.

M