Title :
Adaptive beamforming for an OFDM system
Author :
Kim, Chan Kyu ; Choi, Songin ; Cho, Yong Soo
Author_Institution :
Electron. & Telecommun. Res. Inst., Taejon, South Korea
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. 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; frequency-domain analysis; mean square error methods; time-domain analysis; DOA; MSE; OFDM system; adaptive array antenna; adaptive beamforming algorithm; computer simulation; convergence behavior; filter coefficients; frequency-domain error signals; performance improvement; pilot error signals; time-domain error signals; Adaptive arrays; Adaptive filters; Adaptive systems; Antenna arrays; Array signal processing; Computer errors; Computer simulation; Convergence; OFDM; Time domain analysis;
Conference_Titel :
Vehicular Technology Conference, 1999 IEEE 49th
Conference_Location :
Houston, TX
Print_ISBN :
0-7803-5565-2
DOI :
10.1109/VETEC.1999.778102
