Suboptimal decoding of vector quantization over a frequency-selective Rayleigh fading CDMA channel

Author

Nguyen, Son X. ; Nguyen, Ha H.

Author_Institution

Dept. of Electr. Eng., Saskatchewan Univ., Saskatoon, Sask.

fYear

2005

fDate

1-4 May 2005

Firstpage

888

Lastpage

891

Abstract

The complexity of the optimal decoding for vector quantization (VQ) in code division multiple access (CDMA) communications is prohibitive for implementation. It was recently shown that a suboptimal scheme that combines a soft-output multiuser detector and individual VQ decoders provides a flexible tradeoff between decoder´s complexity and performance. The work however, only considers an AWGN channel model. This paper extends the technique to a frequency-selective Rayleigh fading channel. Simulation results indicate that such a suboptimal decoder also performs very well over this type of channel

Keywords

AWGN channels; Rayleigh channels; channel coding; code division multiple access; decoding; multiuser detection; vector quantisation; AWGN channel model; code division multiple access; decoder complexity; frequency-selective Rayleigh fading CDMA channel; soft-output multiuser detector; suboptimal decoding; vector quantization decoders; AWGN channels; Channel coding; Decoding; Detectors; Fading; Frequency; Multiaccess communication; Multiuser detection; Rayleigh channels; Vector quantization;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Computer Engineering, 2005. Canadian Conference on

Conference_Location

Saskatoon, Sask.

ISSN

0840-7789

Print_ISBN

0-7803-8885-2

Type

conf

DOI

10.1109/CCECE.2005.1557119

Filename

1557119