Goodman Roy wrote am 2008-07-15 00:26:
Hi all,
I would
like to know if it is possible to sense the whole
band,2.4-2.4835GHz, through the USRP? However, the ADC can only
support 64Msamples/sec. How can I scan the whole ISM band and draw the
spectrogram of the ISM band,2.4-2.4835GHz, through the USRP?
You can receive 32MHz at a time, but you are limited to 8MHz through the
USB bus. You cannot scan the whole 2.4Ghz ISM band at a time, but you
can step through it. If you want to detect unused frequencies you'd
probably just want to calculate the power over a reasonable time
interval to decide if some is using the band in question.
You may want take a look at
gnuradio-examples/python/usrp/usrp_spectrum_sense.py [1]
Patrick
[1]
http://gnuradio.org/trac/browser/gnuradio/branches/releases/3.1/gnuradio-examples/python/usrp/usrp_spectrum_sense.py
--
Engineers motto: cheap, good, fast: choose any two
Patrick Strasser <patrick dot strasser at student dot tugraz dot at>
Student of Telematik, Techn. University Graz, Austria
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