Multiuser detection employing particle swarm optimization in space-time CDMA systems

Author

Zhao, Ying ; Zheng, Junli

Author_Institution

Dept. of Electron. Eng., Tsinghua Univ., Beijing, China

Volume

2

fYear

2005

fDate

12-14 Oct. 2005

Firstpage

972

Lastpage

974

Abstract

This paper is focused on the problem of multiuser detection (MUD) using the modified particle swarm optimization (PSO) algorithm for direct-sequence code-division multiple-access (DS-CDMA) systems with space-time block codes (STBC). This novel approach is robust and near-far resistant with a parallel processing structure and a relatively feasible implementation. Simulation results validate the proposed detectors take advantage of the particle swarm algorithm and have a significant performance improvement in terms of multiple access interference (MAI) mitigation.

Keywords

block codes; code division multiple access; mobile radio; multiuser detection; particle swarm optimisation; radiofrequency interference; space-time codes; spread spectrum communication; DS-CDMA systems; direct-sequence code-division multiple-access; multiple access interference mitigation; multiuser detection; parallel processing structure; particle swarm optimization algorithm; space-time CDMA systems; space-time block codes; Detectors; Evolutionary computation; Maximum likelihood detection; Multiaccess communication; Multiple access interference; Multiuser detection; Optimization methods; Particle swarm optimization; Receiving antennas; Robustness;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications and Information Technology, 2005. ISCIT 2005. IEEE International Symposium on

Print_ISBN

0-7803-9538-7

Type

conf

DOI

10.1109/ISCIT.2005.1567029

Filename

1567029