A novel low-complexity near-ML multiuser detector for DS-CDMA and MC-CDMA systems

Author

Li, Yi-Lin ; Lee, Yumin

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan

Volume

1

fYear

2002

fDate

17-21 Nov. 2002

Firstpage

493

Abstract

We propose a novel low-complexity multi-user detection algorithm based on tree search for a unified signal model that applies to both direct sequence code-division multiple access (DS-CDMA) and multi-carrier CDMA (MC-CDMA) systems. Simulation results show that the proposed algorithm outperforms most previously proposed multi-user detection schemes, and can achieve near-optimal (maximum likelihood) performance with very low complexity.

Keywords

code division multiple access; computational complexity; maximum likelihood detection; multiuser detection; search problems; spread spectrum communication; DS-CDMA detectors; MC-CDMA systems; direct sequence code-division multiple access; low-complexity near-ML multiuser detector; maximum likelihood performance; multi-carrier CDMA; near-optimal performance; simulation results; tree search; unified signal model; Detectors; Frequency diversity; Gaussian noise; Matched filters; Maximum likelihood detection; Multiaccess communication; Multicarrier code division multiple access; Multiple access interference; Multiuser detection; Symmetric matrices;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 2002. GLOBECOM '02. IEEE

Print_ISBN

0-7803-7632-3

Type

conf

DOI

10.1109/GLOCOM.2002.1188128

Filename

1188128