Vector quantization over a CDMA channel using soft multiuser decoding

Author

Skoglund, Mikael ; Ottosson, Tony

Author_Institution

Dept. of Inf. Theory, Chalmers Univ. of Technol., Goteborg, Sweden

fYear

1995

fDate

13-17 Nov 1995

Firstpage

117

Lastpage

121

Abstract

The optimal soft decoder for vector quantization over a CDMA channel is presented. It utilizes a-priori source information and channel characteristics to combat channel noise and multiuser interference. Versions of the optimal decoder with lower complexity are also considered. Simulations demonstrate that the soft decoder outperforms the scheme that uses ML-detection plus table look-up VQ decoding

Keywords

channel coding; code division multiple access; computational complexity; decoding; interference suppression; pseudonoise codes; radiofrequency interference; source coding; spread spectrum communication; telecommunication channels; vector quantisation; CDMA channel; a-priori source information; channel characteristics; channel noise; complexity; multiuser interference; soft multiuser decoding; vector quantization; Code division multiaccess; Complexity theory; Decoding; Electromagnetic radiative interference; Interference suppression; Multiuser channels; Pseudonoise coded communication; Source coding; Vector quantization;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 1995. Conference record. Communication Theory Mini-Conference, GLOBECOM '95., IEEE

Print_ISBN

0-7803-2509-5

Type

conf

DOI

10.1109/CTMC.1995.502943

Filename

502943