Adaptive beamforming algorithm for OFDM systems with antenna arrays

Author

Kim, Chan Kyu ; Lee, Kwangchun ; Cho, Yong Soo

Author_Institution

IMT-2000 Div., ETRI, Taejon, South Korea

Volume

46

Issue

4

fYear

2000

fDate

11/1/2000 12:00:00 AM

Firstpage

1052

Lastpage

1058

Abstract

This paper presents an adaptive beamforming algorithm for an OFDM system with an adaptive array antenna. The proposed algorithm for adaptive beamforming in the OFDM system is derived by (1) calculating the pilot error signals in the frequency domain, (2) transforming the frequency-domain error signals into time-domain error signals, (3) updating the filter coefficients of the adaptive beamformer in the direction of minimizing the MSE. The convergence behavior and performance improvement of the proposed approach are investigated through computer simulation by applying it to the conventional OFDM system

Keywords

OFDM modulation; adaptive antenna arrays; array signal processing; convergence of numerical methods; direction-of-arrival estimation; filtering theory; frequency-domain analysis; mean square error methods; time-domain analysis; DOA estimation; MSE minimisation; OFDM systems; SINR; adaptive array antenna; adaptive beamforming algorithm; computer simulation; convergence; filter coefficients updating; frequency domain; frequency-domain error signals; pilot error signals; time-domain error signals; Adaptive arrays; Adaptive filters; Adaptive systems; Antenna arrays; Array signal processing; Computer errors; Convergence; Frequency domain analysis; OFDM; Time domain analysis;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/30.920461

Filename

920461