Thanks Devin and Matt. >From your reply can I say if I don't use AGC and with a fixed value of gain, then I can calculate the RSSI value.
Bin Zan On Tue, Apr 27, 2010 at 3:26 PM, devin kelly <dwwke...@gmail.com> wrote: > Hello Bin, > > My group considered doing this about 4-5 months ago. Things may have > changed now, but at that time it was not possible (or at least not straight > forward to me) to get the gain from the AGC. > > From my understanding, the AGC (automatic gain control) makes getting RSSI > readings difficult because your signal is getting amplified before it gets > sampled. So if you don't know the gain the AGC sets (which varies with > time) it's hard to do RSSI. > > Devin > > On Tue, Apr 27, 2010 at 12:04 PM, bin zan <zanbin2...@gmail.com> wrote: > >> Hello, >> Anyone know if it is correct to roughly estimate RSSI information >> from I/Q values. For example is it correct to say RSSI of a message is equal >> to 10log10(I^2-Q^2). Otherwise, what is the correct way to obtain RSSI value >> in gnuradio? >> >> Thanks, >> Bin >> Winlab >> >> _______________________________________________ >> Discuss-gnuradio mailing list >> Discuss-gnuradio@gnu.org >> http://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> >> > > >
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