Now I have a strange problem. When I add the parameter "log" to the function "self.connect", the FFT bin values I got are all zero. But if I just use self.connect(self.u, s2v, fft, c2mag, stats), some FFT bin values will be very large, even bigger than 5000 sometimes. Should I add the parameter "log"? Do you know how to solve this problem? Thanks.
On Tue, Apr 9, 2013 at 3:58 PM, Nemanja Savic <[email protected]> wrote: > I was designing something similar. It's a block that calculates square > value of the signal and there are two "thresholds", first is power > threshold and the second is time threshold, which means that in order to be > detected, burst must have appropriate power and duration. This explains > nothing, but maybe you will get some ideas. > > Best > > > On Mon, Apr 8, 2013 at 5:16 PM, Jincheng Zhang <[email protected]>wrote: > >> Hi, Omer,**** >> >> ** ** >> >> That’s exactly what I want to do. But I use the usrp_spectrum_sense.py to >> get each channel’s power and then compare with the threshold. Maybe you >> should try the usrp_spectrum_sense.py.**** >> >> ** ** >> >> _______________________________________________ >> Discuss-gnuradio mailing list >> [email protected] >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> >> > > > -- > Nemanja Savić > -- Best regards, Jincheng Zhang Department of Information Engineering The Chinese University of Hong Kong http://personal.ie.cuhk.edu.hk/~zj012/ <http://www.jxqc.org/>
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