Blind RLS based space-time adaptive 2-D RAKE receivers for DS-CDMA communication systems

Author

Chen, Yung-Fang ; Zoltowski, Michael D.

Author_Institution

Dept. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA

Volume

48

Issue

7

fYear

2000

fDate

7/1/2000 12:00:00 AM

Firstpage

2145

Lastpage

2150

Abstract

The goal of a blind two-dimensional (2-D) RAKE receiver for DS-CDMA is to cancel strong multiuser access interference (MUAI) while optimally combining the signal of interest´s (SOI) multipath. The weight vector yielding the optimum SINR for bit decisions may be computed as the “largest” generalized eigenvector of a matrix pencil composed of the SOI plus MUAI and MUAI alone space-time correlation matrices. An alternative blind 2-D RAKE receiver is presented based on RLS-type space-time adaptive filtering that offers competitive performance. The applicability of the scheme to the IS-95 uplink is addressed

Keywords

adaptive filters; cellular radio; code division multiple access; eigenvalues and eigenfunctions; filtering theory; interference suppression; least squares approximations; matrix algebra; multipath channels; multiuser channels; radio links; radio receivers; radiofrequency interference; recursive filters; space-time adaptive processing; spread spectrum communication; DS-CDMA communication systems; IS-95 uplink; RLS-type space-time adaptive filtering; bit decisions; blind 2D RAKE receiver; blind RLS; cellular communications system; direct sequence code division multiple access; generalized eigenvector; matrix pencil; multiuser access interference cancellation; optimum SINR; performance; signal of interest multipath; space-time adaptive 2D RAKE receivers; space-time correlation matrices; weight vector; Antenna arrays; Fading; Fingers; Interference cancellation; Multiaccess communication; Multipath channels; Resonance light scattering; Signal processing algorithms; Signal to noise ratio; Two dimensional displays;

fLanguage

English

Journal_Title

Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1053-587X

Type

jour

DOI

10.1109/78.847797

Filename

847797