Pre-FFT adaptive beamformer based on RLS for OFDM systems

Author

Fan, Ling-Yan ; He, Chen ; Che, Xiao-Lin

Author_Institution

Dept. of Electron. Eng., Shanghai Jiao Tong Univ., China

Volume

3A

fYear

2005

fDate

3-8 July 2005

Firstpage

291

Abstract

In this paper, a pre-fast Fourier transformation (FFT) adaptive beamformer based on RLS is proposed for orthogonal frequency division multiplexing (OFDM) systems, using pilot symbols in the frequency domain. The simulation results show that the proposed beamformer has good convergence performance while reducing computational complexity, and can obtain robust BER performance due to tracking the variance of the channel by the pilot signal.

Keywords

OFDM modulation; array signal processing; convergence of numerical methods; error statistics; fast Fourier transforms; least squares approximations; recursive estimation; time-varying channels; OFDM systems; RLS; convergence performance; fast Fourier transformation; orthogonal frequency division multiplexing; pilot symbols; pre-FFT adaptive beamformer; reduced computational complexity; robust BER performance; time varying channel; Computational complexity; Computational modeling; Convergence; Frequency domain analysis; Helium; Least squares approximation; Linear antenna arrays; OFDM; Resonance light scattering; Robustness;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2005 IEEE

Print_ISBN

0-7803-8883-6

Type

conf

DOI

10.1109/APS.2005.1552238

Filename

1552238