Re: [Discuss-gnuradio] Pi/4 Mod-Demod

2014-10-10 Thread Mike Jameson
Osmo-Tetra uses Pi/4-DQPSK: http://tetra.osmocom.org/trac/wiki/osmo-tetra Mike -- Mike Jameson M0MIK BSc MIET Email: m...@scanoo.com Web: http://scanoo.com On Fri, Oct 10, 2014 at 11:05 AM, PEEL Luke wrote: > All, > > > > I’m interested in, and looking into the Pi/4 QPSK modulation technique

Re: [Discuss-gnuradio] Pi/4 Mod-Demod

2014-10-10 Thread Sylvain Munaut
Hi, > I’m interested in, and looking into the Pi/4 QPSK modulation technique > (http://en.wikipedia.org/wiki/Phase-shift_keying#.CF.80_.2F4.E2.80.93QPSK). > > Has anyone worked on this before and does anyone have any blocks or code > that I could use for reference while making my own? Any help, l