Subspace based blind multiuser detection asynchronous MC-CDMA systems

Author

Lin, Lili

Author_Institution

Coll. of Inf. & Electron. Eng., Zhejiang GongShang Univ., Hangzhou, China

Volume

1

fYear

2005

fDate

23-26 Sept. 2005

Firstpage

639

Lastpage

643

Abstract

Firstly, this paper extends the subspace based intersymbol decorrelating (IS-DEC) detector for code division multiple access (CDMA) system to multicarrier CDMA (MC-CDMA) system. Secondly, a modified projection approximation subspace tracking deflation (M-PASTd) algorithm is proposed and developed elaborately. Then, the M-PASTd algorithm is applied to the blind adaptive implementation of IS-DEC detector for uplink of MC-CDMA systems. Simulation results show that the IS-DEC detector implemented by M-PASTd has good similarity with the optimal decorrelating detector, and provides better bit error rate (BER) performance.

Keywords

code division multiple access; error statistics; multiuser detection; BER; asynchronous MC-CDMA systems; bit error rate; blind adaptive implementation; code division multiple access system; modified projection approximation subspace tracking deflation; subspace based blind multiuser detection; subspace based intersymbol decorrelating detector; uplink; Approximation algorithms; Bit error rate; Decorrelation; Delay effects; Detectors; Frequency; Multiaccess communication; Multicarrier code division multiple access; Multiple access interference; Multiuser detection;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing, 2005. Proceedings. 2005 International Conference on

Print_ISBN

0-7803-9335-X

Type

conf

DOI

10.1109/WCNM.2005.1544125

Filename

1544125