An subspace-based blind multiuser detection in dispersive CDMA channels

Author

Cai, Guoquan ; Yu, Dapeng ; Song, Wentao

Author_Institution

Shangai JiaoTong Univ., Shanghai, China

Volume

2

fYear

2004

fDate

31 May-2 June 2004

Firstpage

779

Abstract

This work investigates the discrete-time MIMO model of the dispersive CDMA channel. Then based on the identified signal subspace parameters and the channel response, two liner detectors that are a zero-forcing detector and a minimize-mean-square-error (MMSE) detector are analyzed. The simulation result shows that the linear MMSE detectors are capable of suppressing both multiple-access interference (MAI) and intersymbol interference (ISI) and the performance of the MMSE detector outperforms the matched filter.

Keywords

MIMO systems; blind equalisers; code division multiple access; discrete time systems; dispersive channels; interference suppression; intersymbol interference; least mean squares methods; multiuser detection; ISI; MAI; MMSE; channel response; discrete-time MIMO model; dispersive CDMA channel; identified signal subspace parameter; intersymbol interference; minimize-mean-square-error detector; multiple-access interference; zero-forcing detector; Detectors; Dispersion; Interference suppression; Intersymbol interference; MIMO; Multiaccess communication; Multiple access interference; Multiuser detection; Signal analysis; Signal processing;

fLanguage

English

Publisher

ieee

Conference_Titel

Emerging Technologies: Frontiers of Mobile and Wireless Communication, 2004. Proceedings of the IEEE 6th Circuits and Systems Symposium on

Print_ISBN

0-7803-7938-1

Type

conf

DOI

10.1109/CASSET.2004.1322005

Filename

1322005