Subspace-based multiuser detector for DS-CDMA systems over flat fading channels

Author

Ye, Getian ; Bi, Guoan ; Fu, Hongyi

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Inst., Singapore

Volume

1

fYear

2000

fDate

2000

Firstpage

522

Abstract

An adaptive multiuser detector based on signal subspace estimation is proposed for a synchronous DS-CDMA system over flat fading channels. It is shown that under this scheme, the linear MMSE detector can be obtained. Based on the training sequence transmitted by the desired user, the proposed detector does not require knowledge of the code sequence and the propagation channel response of the desired user. The proposed adaptive multiuser detection technique is shown to be computationally efficient and robust against the near-far problem

Keywords

Rayleigh channels; adaptive signal detection; cellular radio; code division multiple access; least mean squares methods; multiuser channels; personal communication networks; spread spectrum communication; Rayleigh fading; adaptive multiuser detector; computationally efficient algorithm; flat fading channels; linear MMSE detector; mobile cellular communication systems; near-far problem robustness; personal communication systems; signal subspace estimation; signal subspace tracking algorithm; simulation results; subspace-based multiuser detector; synchronous DS-CDMA system; training sequence; Adaptive arrays; Adaptive signal detection; Bismuth; Detectors; Fading; Least squares approximation; Multiaccess communication; Multiuser detection; Resonance light scattering; Steady-state;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference Proceedings, 2000. VTC 2000-Spring Tokyo. 2000 IEEE 51st

Conference_Location

Tokyo

ISSN

1090-3038

Print_ISBN

0-7803-5718-3

Type

conf

DOI

10.1109/VETECS.2000.851512

Filename

851512