Hello I would like to be able to measure the received signal power by the USRP2's antenna at any compatible frequency. My idea is store the value of the received signal power in a variable, which I'll use to determine if the channel is busy or not (based on a configurable threshold).
I've taken a look at USRP2_fft example and I've thought this: [USRP2 source] --> [Complex to Mag ^2]--> [FFT sink] When I run this graph (using grc) in a computer, I obtain the USRP2's measurement modulus. On another computer I run a program which generates 802.11 a/g/p frames. The result is: there's a big difference between received signals (when I'm sending 802.11 frames and when I'm not sending). My questions are: - Is it a good way to test the 'RSSI' by the USRP2's antenna? Is it accurate? - How could I store some resultant samples in a file (instead of graphical sink)? If I could do this, I'll be able to estimate whether the channel is busy or not. - Does it exist another method to do the RSSI measurement "easily"? - I've been reading and googling before posting, and I found this post http://lists.gnu.org/archive/html/discuss-gnuradio/2007-08/msg00088.html but it's from 08/2007. Is it possible to check the value of "rssi registers" directly? Are they deprecated because they're related to USRP1 & inband signaling? Regards, J. Gutierrez _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
