> HI, > > 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 > [email protected] > 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 http://www.sbrac.org
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