Noncoherent sequence detection of trellis-coded CPFSK with MRC diversity over fading channels

Author

Teng, C.-C. ; Fonseka, J.P. ; Korn, I.

Author_Institution

Sch. of Eng. & Comput. Sci., Texas Univ., Richardson, TX, USA

Volume

149

Issue

2

fYear

2002

fDate

4/1/2002 12:00:00 AM

Firstpage

92

Lastpage

98

Abstract

Soft-decision differential phase detection (SD-DPD) with Viterbi decoding is proposed for the detection of trellis-coded FSK signals over a fading channel. The soft detector detects the differential phase and chooses a subregion among a preselected set of subregions at the end of every interval. The effect of the number of subregions is studied. The proposed system is analysed over a Rician channel with maximum ratio combining diversity. Numerical results indicate that SD-DPD with Viterbi decoding performs significantly better than hard-decision decoding, and diversity improves performance. Numerical results also indicate that a suboptimal receiver that maintains the same set of metrics for all signal-to-noise ratios performs close to optimal decoding

Keywords

Rician channels; Viterbi decoding; continuous phase modulation; diversity reception; frequency shift keying; maximum likelihood decoding; maximum likelihood detection; modulation coding; radio receivers; ML sequence detection; MRC diversity; Rician channel; SNR; Viterbi decoding; differential phase; fading channels; hard-decision decoding; maximum likelihood decoding; maximum ratio combining diversity; noncoherent sequence detection; optimal decoding; signal-to-noise ratio; soft-decision differential phase detection; suboptimal receiver; subregion; trellis-coded CPFSK; trellis-coded FSK signals;

fLanguage

English

Journal_Title

Communications, IEE Proceedings-

Publisher

iet

ISSN

1350-2425

Type

jour

DOI

10.1049/ip-com:20020245

Filename

1013311