Andrew Rose wrote:
2. 1200Hz/1800Hz continuous-phase FSK encoding 1200 bits per second. i.e. each output bit is either 1 cycle of a 1200Hz wave (1-bit) or 1.5 cycles of an 1800Hz wave (0-bit). The start of each bit is at a zero-crossing (although there are obviously zero-crossings which aren't the start of a bit).
What you are describing is called Mean Shift Keying. It is a specialized form of FSK that is designed to have more efficient
bandwidth utilization. I would guess that you could use the Gaussian Mean Shift Keying (GMSK) demodulator, or construct your own using a quadrature demodulator and a root-rased-cosine filter. @(^.^)@ Ed _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
