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Re: [Discuss-gnuradio] Carrier sense on USRP

From: Eric Blossom
Subject: Re: [Discuss-gnuradio] Carrier sense on USRP
Date: Fri, 21 Apr 2006 16:59:52 -0700
User-agent: Mutt/1.5.9i

On Fri, Apr 21, 2006 at 07:54:58PM -0400, amit malani wrote:
> Hello..
> i am wondering how carrier sense could be implemented on USRP....
> can those PLLs on FPGA be brought to some use?
> Can I do something on the lines of takeing running average
> Will constantly keep a track of  the incoming samples of the received
> signals...
> calcuate the running average and
> Will decide some noise floor/threshold for decision...
> I hve very less knowledge of digital signal processing...
> will this idea work?

No need for PLLs, just compute something like RMS power.
Also, though you could do it in the FPGA, you could also do it on the


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