An online calibration algorithm for the CDMA-based adaptive antenna array

Author

Lee, Chong Hyun ; Kim, Soohong ; Chun, Joohwan ; Lee, Jong Heun

Author_Institution

Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Taejon, South Korea

Volume

2

fYear

2000

fDate

Oct. 29 2000-Nov. 1 2000

Firstpage

1586

Abstract

We propose a new adaptive calibration algorithm for a CDMA-based antenna array in the presence of unknown gain and phase errors. The algorithm does not require any additional reference signal for calibration and can be applied to both the uplink and downlink. To speed up the convergence rate of the proposed algorithm, we use phase compensated input signals obtained by phase conjugate operation. We verify the algorithm using field data measured through a custom-built W-CDMA test-bed built by SK-telecom.

Keywords

adaptive antenna arrays; array signal processing; calibration; code division multiple access; convergence of numerical methods; direction-of-arrival estimation; land mobile radio; least mean squares methods; multiuser channels; online operation; radio links; spread spectrum communication; CDMA-based adaptive antenna array; DOA estimation; LMS algorithm; RLS algorithm; SK-telecom; W-CDMA test-bed; adaptive calibration algorithm; convergence rate; direction of arrival estimate; downlink beamforming; field data; gain error; online calibration algorithm; phase compensated input signals; phase conjugate operation; phase error; uplink beamforming; wideband DS-CDMA service; Adaptive arrays; Antenna arrays; Calibration; Convergence; Detectors; Downlink; Least squares approximation; Phase detection; Phased arrays; Receiving antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems and Computers, 2000. Conference Record of the Thirty-Fourth Asilomar Conference on

Conference_Location

Pacific Grove, CA, USA

ISSN

1058-6393

Print_ISBN

0-7803-6514-3

Type

conf

DOI

10.1109/ACSSC.2000.911257

Filename

911257