Title :
Trellis coding of non-coherent multiple symbol full response M-ary CPFSK with modulation index 1/M
Author :
Lee, Ho-Kyoung ; Divsalar, Dariush ; Weber, Charles
Author_Institution :
Commun. Sci. Inst., Univ. of Southern California, Los Angeles, CA, USA
Abstract :
The paper introduces a trellis coded modulation (TCM) scheme for non-coherent multiple full response M-ary CPFSK with modulation index 1/M. A proper branch metric for the trellis decoder is obtained by employing a simple approximation of the modified Bessel function for large signal to noise ratio (SNR). Pairwise error probability of coded sequences is evaluated by applying a linear approximation to the Rician random variable. Examples are presented for trellis codings of non-coherent binary CPFSK by using the Ungerboeck´s (1982) set partitioning method. Asymptotic upper bounds on bit error probability are evaluated for the given coded systems, and simulation results are also presented
Keywords :
Bessel functions; Rician channels; decoding; error statistics; frequency shift keying; random processes; sequences; trellis coded modulation; Rician random variable; Ungerboeck´s set partitioning method; asymptotic upper bounds; bit error probability; branch metric; coded sequences; linear approximation; modified Bessel function; modulation index 1/M; noncoherent multiple symbol full response M-ary CPFSK; pairwise error probability; signal to noise ratio; trellis coded modulation; trellis coding; trellis decoder; Bandwidth; Decoding; Differential phase shift keying; Error probability; Linear approximation; Modulation coding; Pairwise error probability; Random variables; Signal to noise ratio; Upper bound;
Conference_Titel :
Military Communications Conference, 1994. MILCOM '94. Conference Record, 1994 IEEE
Conference_Location :
Fort Monmouth, NJ
Print_ISBN :
0-7803-1828-5
DOI :
10.1109/MILCOM.1994.473999
