Why not use an nco for fsk? Not sure if you're using gnuradio but you can look at the cpfsk modulator as a reference.
On Monday, June 29, 2015, Michael Ossmann <[email protected]> wrote: > On Sun, Jun 28, 2015 at 08:49:40AM -0700, Peter Shipley wrote: > > > > As you may have guessed, my generated IQ stream was made with a loop > > calling sin/cos and timing the transitions to times where I&Q can swap > > symmetrically ( without jumping ). > > what is then proper method for making phase transitions? > > One method is to smoothly lower the amplitude to zero at the transition > and then back up to full amplitude by mid-symbol. This is done, for > example, in PSK31. A simpler approach is to use an FIR low pass filter > on your waveform before transmission. > > Mike > _______________________________________________ > HackRF-dev mailing list > [email protected] <javascript:;> > https://pairlist9.pair.net/mailman/listinfo/hackrf-dev >
_______________________________________________ HackRF-dev mailing list [email protected] https://pairlist9.pair.net/mailman/listinfo/hackrf-dev
