Forum: GNU Radio obtaining duration of Idle and busy cycles

170520ee183081fdd5c823f41877b86b?d=identicon&s=25 Sahoo, Anirudha (Guest)
on 2012-10-18 23:51
(Received via mailing list)
Hi,
  I am trying to use "usrp_sprectrum_sense.py" to obtain
Idle (white space) and busy cycles of a channel (say channel 1
of WiFi).
  I was thinking of doing it the following way:
Continuously get the FFT (and hence power in db) of
center frequency of channel 1. Whenever the power is
very low (below a threshold), assume the channel was
idle, otherwise channel was busy.
  Let us say, I found that 10 consecutive fft readings indicated
that channel was idle, can I assume that the corresponding
idle period was 10xtime to get one FFT reading? Is "time to get one
FFT reading" equal to "dwell_delay"? If not, what is its value?
  If the above method is not accurate/correct, any other method
which would work?
  Thanks

-Anirudh
62c6afe77dc83ea1bbb16ff0b2a5a88d?d=identicon&s=25 sumitstop (Guest)
on 2012-10-22 17:17
(Received via mailing list)
I think that to get one FFT reading shall equal dwell_delay + tune delay





--
View this message in context:
http://gnuradio.4.n7.nabble.com/obtaining-duration...
Sent from the GnuRadio mailing list archive at Nabble.com.
Please log in before posting. Registration is free and takes only a minute.
Existing account

NEW: Do you have a Google/GoogleMail, Yahoo or Facebook account? No registration required!
Log in with Google account | Log in with Yahoo account | Log in with Facebook account
No account? Register here.