Hybrid BFSK/MPSK modulation employing GAC codes

In this paper a hybrid binary frequency shift keying/multiple phase shift keying (BFSK/MPSK) modulation technique employing generalised array codes (GAC) and trellis decoding is proposed. The performances of the GAC employing the hybrid BFSK/MPSK are compared with those employing BPSK, MPSK schemes and the corresponding uncoded MPSK scheme.