Title :
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
fDate :
11/1/2000 12:00:00 AM
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;
Journal_Title :
Consumer Electronics, IEEE Transactions on
