Thanks Firas, The transmitter which I want to detect the cycle for (You are correct that I want to find that repitition cycle). I am little bit confused to know what is the duty cycle of it. But I can simply tell that it always transmitt a fix packet (with bitrate=500kbps) of 1220 micro sec including preamble. It means that after every T ms (T is repetition cycle time and can be a fixed value from range: 1ms...200ms, I selected 10ms for ablove given data) it transmitts a 1220 microsec long signal.
Is it sufficient??? Could you have a look at code and especially the decimation process and the filter_coefficients??? Best Regards Firas A. wrote: > > > Hi, > >> On Wed, 4/22/09, kaleem ahmad <kaleem_...@yahoo.com> wrote: >> >> Hi All, >> >> I am trying to detect the cycle (or period) time of a cyclic data >> transmitter by sensing the channel. The transmitter can be any general >> e.g. >> FSK/ZigBee/Bluetooth etc, and transmitting a fixed packet after every 'T' >> ms. I am interested to detect this T using GNURadio/USRP. >> > > You info is not enough. > > For a cyclic transmitter there is a transmission duty cycle and repetition > cycle. From what I understand, you are trying to measure repitition cycle. > > But, > > What is the duty cycle of your transmitter (the time it will stay ON)? > > For example, Blue tooth is a frequency hopping device. It hops 1600 > hop/sec. This means the duty cycle for it is 625usec. > > > > > > Best Regards, > > Firas > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > -- View this message in context: http://www.nabble.com/cycle-period-detection-of-a-cyclic-periodic-transmitter-tp23171564p23174531.html Sent from the GnuRadio mailing list archive at Nabble.com. _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
