Re: [Discuss-gnuradio] RSSI value in USRP2

[Brian Padalino]

On Fri, Jul 10, 2009 at 12:21 PM, Eric Lo<address@hidden> wrote:
> But is there any good method to estimate SNR or RSSI ?

Both are pretty much unrelated.

SNR you will be able to get based on your demodulation on the host.

RSSI is based on the gain settings you choose for your amplifiers.
The incoming power as seen by the ADC can be seen as the magnitude
squared of your complex signal which determines how much dynamic range
you are using of your ADC.

In general, signal strength is a measure of how much energy you're
converting (both signal and noise) whereas SNR is a measure of the
quality of your signal with respect to noise (aka, a measure of how
much converted energy is useful).

I hope this is helpful.

Brian