Adaptive antenna arrays for cellular CDMA communication systems

Author

Wang, Yiping ; Cruz, J.R.

Author_Institution

Sch. of Electr. Eng., Oklahoma Univ., Norman, OK, USA

Volume

3

fYear

1995

fDate

9-12 May 1995

Firstpage

1725

Abstract

The use of an adaptive antenna array at the base station in the reverse link of cellular communication systems is proposed. Two kinds of adaptive methods are considered. First, the recursive least squares (RLS) algorithm, which is a reference signal based method, is used to adjust the weight coefficients of the array. For eigenstructure based methods, the ESPRIT algorithm is used for angle of arrival (AOA) estimation and the linear least squares estimate (LLSE) is used to determine the adaptive array weights. The improvement in performance is quantified by comparison with the omnidirectional antenna system using realistic simulations. The comparisons of different adaptive arrays are discussed and analyzed

Keywords

adaptive antenna arrays; adaptive estimation; cellular radio; code division multiple access; direction-of-arrival estimation; eigenvalues and eigenfunctions; least squares approximations; recursive estimation; ESPRIT algorithm; adaptive antenna array; adaptive array weights; angle of arrival estimation; base station; cellular CDMA communication systems; eigenstructure based methods; linear least squares estimate; recursive least squares algorithm; reference signal based method; reverse link; weight coefficients; Adaptive algorithm; Adaptive arrays; Antenna arrays; Base stations; Convergence; Least squares approximation; Multiaccess communication; Resonance light scattering; Time division multiple access; White noise;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1995. ICASSP-95., 1995 International Conference on

Conference_Location

Detroit, MI

ISSN

1520-6149

Print_ISBN

0-7803-2431-5

Type

conf

DOI

10.1109/ICASSP.1995.480030

Filename

480030