Noncoherent sequence detection of trellis coded CPFSK over Rician channels

Author

Teng, Chen-Chia ; Fonseka, John P. ; Korn, Israel

Author_Institution

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

Volume

4

fYear

2001

fDate

2001

Firstpage

2935

Abstract

In this study, noncoherent sequence detection of trellis coded continuous phase frequency shift keying (CPFSK) signals is considered over Rician fading channels with maximum ratio combining (MRC) diversity. A soft decision differential phase detector (SD-DPD) that chooses a differential phase subregion among a preselected set of subregions at the end of every interval is considered. The output of the SD-DPD is then used to calculate metrics for Viterbi decoding. Different trellis codes are analyzed over fading channels with different fading parameters, different numbers of diversity branches, and different numbers of differential phase subregions in the SD-DPD. Numerical results indicate that a suboptimal receiver that maintains the same set of metrics for all signal-to-noise ratios (SNR) performs close to optimal decoding

Keywords

Rician channels; Viterbi decoding; continuous phase modulation; differential detection; diversity reception; frequency shift keying; maximum likelihood detection; modulation coding; noise; phase detectors; radio receivers; trellis codes; MRC diversity; Rician channels; SNR; Viterbi decoding; continuous phase frequency shift keying; differential phase subregion; differential phase subregions; diversity branches; fading channels; fading parameters; maximum likelihood sequence detection; maximum ratio combining diversity; noncoherent sequence detection; optimal decoding; signal-to-noise ratios; soft decision differential phase detector; suboptimal receiver; trellis coded CPFSK; trellis codes; Convolutional codes; Decoding; Diversity reception; Fading; Frequency shift keying; Phase detection; Phase frequency detector; Rician channels; Signal to noise ratio; Viterbi algorithm;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2001. VTC 2001 Spring. IEEE VTS 53rd

Conference_Location

Rhodes

ISSN

1090-3038

Print_ISBN

0-7803-6728-6

Type

conf

DOI

10.1109/VETECS.2001.944139

Filename

944139