Multiuser detection in DS-CDMA systems based on a lattice code decoder

Author

Dangl, M.A. ; Egle, J. ; Teich, W.G. ; Lindner, J.

Author_Institution

Depariment of Inf. Technol., Ulm Univ., Germany

Volume

2

fYear

2002

fDate

2-5 Sept. 2002

Firstpage

500

Abstract

Usually, multiple access interference in DS-CDMA systems represents the capacity limiting factor. In this paper, we propose a multiuser detection algorithm based on a lattice code decoder that offers moderate computational complexity. The bit error rate converges asymptotically to the maximum-likelihood curve for large signal-to-noise ratios. Numerical results verify the performance in comparison to conventional detection schemes.

Keywords

code division multiple access; computational complexity; error statistics; maximum likelihood decoding; multiuser detection; spread spectrum communication; DS-CDMA systems; bit error rate; bounded distance decoding; capacity limiting factor; computational complexity; joint detection; lattice code decoder; maximum-likelihood curve; multiple access interference; multiuser detection; multiuser detection algorithm; signal-to-noise ratios; Computational complexity; Decoding; Detectors; Information technology; Interference; Lattices; Matched filters; Multiaccess communication; Multiuser detection; Niobium;

fLanguage

English

Publisher

ieee

Conference_Titel

Spread Spectrum Techniques and Applications, 2002 IEEE Seventh International Symposium on

Print_ISBN

0-7803-7627-7

Type

conf

DOI

10.1109/ISSSTA.2002.1048592

Filename

1048592