Re: MPSK SNR Estimator Probe

[Marcus Müller]

Hi Symon,

As explained in our FAQ[1], you need to have a source of known power and observe it. Then 
you can put your observation of signals of interest into relation to that.

In this case, you'd need a reference transmitter for PSK of known power at your receiver 
input.

Best regards,
Marcus

[1] 
https://wiki.gnuradio.org/index.php/FAQ#How_do_I_know_the_exact_voltage/power_of_my_received_input_signal?


On 14.02.23 10:28, Szymon Kowalewski wrote:
> Hi all,
>
> I have a problem when trying to measure noise/signal power. I have been trying to use 
> the SNR Estimator probe. The documentation states that "Some calibration is required to 
> convert dBx of the signal and noise power estimates to real measurements, such as dBm.". 
> What type of calibration is needed and what is actually measured by this block (what is 
> dBx)?
>
> Kr,
> Szymon