Soft-decision output at sequential detection algorithms in digital mobile radio systems

Author

Zimmermann, Gerd ; Rupprecht, Werner

Author_Institution

Inst. of Commun. Eng., Kaiserslautern Univ., Germany

fYear

1994

fDate

8-10 Jun 1994

Firstpage

292

Abstract

To improve the performance of the channel decoding in receivers for digital mobile radio systems the detector should be able to deliver reliability information about the symbol decisions (soft-decision). This paper is concerned with procedures which allow a soft-decision output at sequential detection algorithms. Simulation results obtained with these algorithms for the GSM system show the achievable gain over hard-decision detectors and allow a comparison to the more complex Soft-Output Viterbi-algorithm

Keywords

cellular radio; digital radio; land mobile radio; radio receivers; radiowave propagation; sequential decoding; signal detection; telecommunication channels; GSM system; channel decoding; digital mobile radio systems; hard-decision detectors; receivers; reliability information; sequential detection algorithms; simulation results; soft-decision output; soft-output Viterbi algorithm; symbol decisions; Data communication; Detection algorithms; Detectors; Fading; GSM; Land mobile radio; Maximum likelihood decoding; Maximum likelihood estimation; Receivers; Speech;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1994 IEEE 44th

Conference_Location

Stockholm

ISSN

1090-3038

Print_ISBN

0-7803-1927-3

Type

conf

DOI

10.1109/VETEC.1994.345118

Filename

345118