dqpsk.py module depends on mpsk_receiver_cc. In file $GNURADIO/gnuradio-core/src/lib/general/gr_mpsk_receiver_cc.h there is information:
* This block takes care of receiving M-PSK modulated signals through phase, frequency, and symbol * synchronization. It performs carrier frequency and phase locking as well as symbol timing recovery. * It works with (D)BPSK, (D)QPSK, and (D)8PSK as tested currently. It should also work for OQPSK and * PI/4 DQPSK. On Thu, Jan 22, 2009 at 7:02 AM, Tommi Rouvali <to...@rouvali.com> wrote: > > Hello, > > I have been thinking about this. I have access to two TETRA terminals. > The down side is I am beginner in Gnu Radio and DSP in general. > > Is the π/4 DQPSK modulation really supported by Gnu radio? Any examples > about this? > > > Grzegorz Suder wrote: > >> Hello, >> I've looked through Wiki and discussion archives but I haven't found >> answer for my question. Is there any working code for Gnu Radio that is able >> to receive Tetra subscriber (not base station) signal and convert it into >> bitstream? I believe that demodulation is already done (DQPSK as I know) but >> there is still timing and slot separation issue. Seems that there were >> attempts to introduce support for inband signaling for Gnu Radio but last >> information I've found are from 2007. >> Regards, >> ------------------------------------------------------------------------ >> >> _______________________________________________ >> Discuss-gnuradio mailing list >> Discuss-gnuradio@gnu.org >> http://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> >> > > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio >
_______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
