Multiple-symbol differential detection of GMSK for mobile communications

Author

Abrardo, Andrewa ; Benelli, Giuliano ; Cau, Gianfranco R.

Author_Institution

Dept. of Electron. Eng., Florence Univ., Italy

Volume

44

Issue

3

fYear

1995

fDate

8/1/1995 12:00:00 AM

Firstpage

379

Lastpage

389

Abstract

A new multiple differential detection (MDD) sequence estimator is described which uses a decision feedback for the demodulation of a GMSK signal. This technique is based upon a maximum-likelihood sequence estimation of the transmitted phases rather than on a symbol-by-symbol detection. An upper and a lower bound on the bit error probability of the described detector in the case of an AWGN channel and a two-ray Rayleigh fading channel are derived. The performance of the detection algorithm in a mobile radio communication system is obtained through computer simulation. Comparisons with the coherent detection algorithm show that the proposed detection algorithm is quite attractive both in an AWGN and in a multipath channel

Keywords

Gaussian channels; Rayleigh channels; automatic repeat request; error statistics; estimation theory; fading; land mobile radio; maximum likelihood detection; maximum likelihood estimation; minimum shift keying; multipath channels; sequences; AWGN channel; GMSK; bit error probability; decision feedback; demodulation; detection algorithm; lower bound; maximum-likelihood sequence estimation; mobile communications; multipath channel; multiple differential detection sequence estimator; multiple-symbol differential detection; performance; transmitted phases; two-ray Rayleigh fading channel; upper bound; AWGN; Demodulation; Detection algorithms; Detectors; Error probability; Feedback; Maximum likelihood detection; Maximum likelihood estimation; Phase detection; Phase estimation;

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/25.406604

Filename

406604