An improved OPAST algorithm for spatio-temporal multiuser detection technique based on subspace tracking

Author

Zhang, Hui ; Ren, Guangliang ; Zhang, Huining ; Zhang, Jin

Author_Institution

Nat. Key Lab. of ISN, Xidian Univ., Xi´´an

fYear

2004

fDate

7-7 Sept. 2004

Firstpage

401

Lastpage

404

Abstract

An improved OPAST algorithm for spatio-temporal multiuser detection technique is proposed to increase the system capacity and improve the SNR in DS-CDMA systems employing the antenna arrays. The improved OPAST algorithm called newOPAST is based on the OPAST algorithm and can be applied in the overloaded DS-CDMA systems. Simulation results show that the newOPAST algorithm has low complexity and a stable global convergence property, and its performance is close to that of the classical algorithms with high complexity in the blind spatio-temporal multiuser detection

Keywords

antenna arrays; code division multiple access; computational complexity; convergence; multiuser detection; spread spectrum communication; DS-CDMA system; OPAST algorithm; antenna array; computational complexity; convergence property; spatiotemporal multiuser detection technique; subspace tracking; Additive white noise; Antenna arrays; Convergence; Gaussian noise; Laboratories; Multiaccess communication; Multiuser detection; Noise robustness; Receiving antennas; Statistics;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications Systems, 2004. ICCS 2004. The Ninth International Conference on

Conference_Location

Singapore, China

Print_ISBN

0-7803-8549-7

Type

conf

DOI

10.1109/ICCS.2004.1359407

Filename

1359407