M-ary coded modulation assisted genetic algorithm based multiuser detection for CDMA systems

Author

Ng, S.X. ; Yen, K. ; Hanzo, L.

Author_Institution

Dept. of Electr. & Comput. Sci., Southampton Univ., UK

Volume

2

fYear

2003

fDate

20-20 March 2003

Firstpage

779

Abstract

In this contribution we propose a novel M-ary coded modulation assisted genetic algorithm based multiuser detection (CM-GA-MUD) scheme for synchronous CDMA systems. The performance of the proposed scheme was investigated using quadrature-phase-shift-keying (QPSK), 8-level PSK and 16-level quadrature amplitude modulation (16QAM) when communicating over AWGN and narrowband Rayleigh fading channels. When compared with the optimum MUD scheme, the GA-MUD subsystem is capable or reducing the computational complexity significantly. On the other hand, the CM subsystem is capable of obtaining considerable coding gains despite being fed with sub-optimal information provided by the GA-MUD output.

Keywords

AWGN channels; Rayleigh channels; code division multiple access; computational complexity; genetic algorithms; modulation coding; multiuser detection; quadrature amplitude modulation; quadrature phase shift keying; 16QAM; 8PSK; AWGN; CDMA system; CM-GA-MUD scheme; M-ary coded modulation assisted genetic algorithm based multiuser detection; QPSK; additive white Gaussian noise; code division multiple access; coding gain; computational complexity; narrowband Rayleigh fading channel; quadrature amplitude modulation; quadrature phase shift keying; AWGN; Code division multiplexing; Genetic algorithms; Modulation coding; Multiaccess communication; Multiuser detection; Narrowband; Phase shift keying; Quadrature amplitude modulation; Quadrature phase shift keying;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Networking, 2003. WCNC 2003. 2003 IEEE

Conference_Location

New Orleans, LA, USA

ISSN

1525-3511

Print_ISBN

0-7803-7700-1

Type

conf

DOI

10.1109/WCNC.2003.1200469

Filename

1200469