Re: [Discuss-gnuradio] ENERGY DETECTOR

[Timothy R. Newman]

On 12/9/2009 7:49 AM, abbasi9999 wrote:
> HI ALL
>
> I'm trying to implement ENERGY DETECTOR using gnu radio.
> Is there any library or modules to help. Especially when implementing energy
> detection we need to estimate the awgn.
> I've searched in
> http://gnuradio.org/doc/doxygen/
> but i cannot find any relative information.
>
> regards,
>
>    
This can all be done using the usrp_spectrum_sense script or even 
looking at usrp_fft to see how this is done.  One way to estimate the 
noise is have a known "quiet time" where you measure the energy of the 
channel and use a threshold derived from that as the signal detection 
threshold.

Tim