A Simple and Efficient Approach for Space-Frequency Channel Estimation and Beamforming in OFDM Systems

Author

Li Ping´an ; Qin, Sun

Author_Institution

Wuhan Univ. of Technol.

Volume

2

fYear

2006

fDate

25-28 June 2006

Firstpage

1077

Lastpage

1080

Abstract

In this paper, a simple method for space-frequency channel estimation in an orthogonal frequency division multiplexing (OFDM) system with an antenna array is proposed. The space-frequency channel impulse response is estimated in the frequency domain. The estimated channel is further used to implement joint space-frequency channel equalization in the uplink and the beamforming in the downlink. Compared with the existing systems where independent beamforming and channel equalization in frequency domain are conducted, the proposed method can significantly reduce the complexity of the system without loss of performance. Simulations are conducted to show the effectiveness of the proposed approach

Keywords

OFDM modulation; antenna arrays; array signal processing; channel estimation; equalisers; frequency-domain analysis; transient response; OFDM system; antenna array; beamforming; channel equalization; channel impulse response; frequency domain analysis; orthogonal frequency division multiplexing; space-frequency channel estimation; AWGN; Antenna arrays; Array signal processing; Channel estimation; Fading; Frequency domain analysis; Frequency estimation; OFDM; Space technology; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, Circuits and Systems Proceedings, 2006 International Conference on

Conference_Location

Guilin

Print_ISBN

0-7803-9584-0

Electronic_ISBN

0-7803-9585-9

Type

conf

DOI

10.1109/ICCCAS.2006.284834

Filename

4064075