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Re: [Discuss-gnuradio] Received Signal Power ?

From: Kresimir Dabcevic
Subject: Re: [Discuss-gnuradio] Received Signal Power ?
Date: Fri, 2 Sep 2011 14:19:31 +0200

On Fri, 02 Sep 2011 14:12:24 +0200, Kresimir Dabcevic <address@hidden> wrote:

> -----Original Message-----
> From: address@hidden [mailto:address@hidden]
> Sent: Fri 9/2/2011 11:55 AM
> To: address@hidden
> 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

via signal processing blocks (this is what Marcus Leech referred me to do, you could find that post somewhere in the archives).


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