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
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