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Re: [Discuss-gnuradio] rssi question

From: Marcus D. Leech
Subject: Re: [Discuss-gnuradio] rssi question
Date: Thu, 30 Sep 2010 23:49:35 -0400
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I am working on the USRP2 and gnuradio. And I want to use them to get the rssi (like bluetooth). Through reading the former posts for rssi on GNU Radio mailing list, using the rssi.v is the solution. But I still have some questions about the rssi.v. I am a fresh man and looking for some helps through with baby step questions as follows:
1. I can not find any rssi.v in lastest version gnuradio (version 3.3.0), instead, the rssi.v file is found in gr-bluetooth project folder (it is another project which set up based on the gnuradio and used to deal with the bluetooth signal). Is it OK to copy the rssi.v file from the Internet and add it into the gnuradio folder?
2. The rssi.v file is a  Verilog file?? I do not how to use it. Is there any links to explain this?? (I try.. but did not find it)
Thanks a lot.
------------ LION
_______________________________________________ Discuss-gnuradio mailing list address@hidden http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Since it's a Verilog file, I assume that it's for deriving RSSI values in the firmware in the FPGA, or perhaps for reading whatever RSSI
  registers a given hardware RX module might provide.

But signal strength (RSSI) can b easily computed in software from your signals--there's an RMS Power block that can be used.
  It produces linear units, but you could then plug that into a log power block to get dB if you want dB units.  There's no need to
  have the hardware do that calculation--it's very simple and straightforward.

Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium

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