On Fri, 02 Sep 2011 14:12:24 +0200, Kresimir Dabcevic <[email protected]> wrote:
> > > > -----Original Message----- > From: [email protected] [mailto:[email protected]] > Sent: Fri 9/2/2011 11:55 AM > To: [email protected] > Cc: Kresimir Dabcevic > Subject: RE: RE: [Discuss-gnuradio] Received Signal Power ? >Hi all, > > Thanks for the answer! But isn't there a functionality in the XCVR2450 > daughterboard, which already measures the RSSI value? > > Isn't there like a function which could output this value? > Yes, there is an onboard sensor, http://files.ettus.com/uhd_docs/manual/html/dboards.html#xcvr-2450 , but it produces HIGHLY inaccurate results. You can access its values with read_rssi(). > Secondly. Capturing the samples right at the output of the USRP, > meaning within "gr.fft_filter_ccc" or maybe within the > "gr.probe_avg_mag_sqrd_c"? Just take the stream from the USRP and perform 10*LOG10(DECIMATE(SINGLE_POLE_IIR_FILTER(COMPLEX_TO_MAG**2(SIGNAL)))) via signal processing blocks (this is what Marcus Leech referred me to do, you could find that post somewhere in the archives). Regards, Kresimir
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