A new low-complexity beamformer-RAKE receiver for WCDMA

Author

Alam, F. ; Shim, Donghee ; Woerner, Brian D.

Author_Institution

Bradley Dept. of Electr. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA

Volume

1

fYear

2002

fDate

2002

Firstpage

160

Lastpage

164

Abstract

We demonstrate the performance of a beamformer-RAKE receiver at the uplink of a wideband code division multiple access (WCDMA) system. The receiver employs maximum signal to interference and noise ratio (MSINR) criterion to form its beams in the spatial domain. We propose a new iterative algorithm to solve the generalized eigenvalue problem (GE) resulting from the MSINR beamforming criterion. This algorithm, termed adaptive matrix inversion (AMI), has linear computational complexity with the number of antenna elements. We show the performance gain compared to that of another proposed method

Keywords

array signal processing; broadband networks; cellular radio; code division multiple access; computational complexity; eigenvalues and eigenfunctions; matrix inversion; multiuser channels; noise; radio receivers; radiofrequency interference; 3G cellular service; MSINR beamforming criterion; WCDMA system; adaptive matrix inversion; antenna elements; generalized eigenvalue problem; linear computational complexity; low-complexity beamformer-RAKE receiver; maximum signal to interference and noise ratio; performance gain; spatial domain beams; third generation cellular service; uplink; wideband code division multiple access; Adaptive arrays; Ambient intelligence; Array signal processing; Computational complexity; Eigenvalues and eigenfunctions; Interference; Iterative algorithms; Multiaccess communication; Signal to noise ratio; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2002. ICC 2002. IEEE International Conference on

Conference_Location

New York, NY

Print_ISBN

0-7803-7400-2

Type

conf

DOI

10.1109/ICC.2002.996837

Filename

996837