A Novel Pre-FFT Beamforming for an OFDM System with an Antenna Array in WLAN

Author

Ping, Li ; Zhaofengfei

Author_Institution

Wuhan Technol. Univ.

fYear

2006

fDate

22-24 Sept. 2006

Firstpage

1

Lastpage

4

Abstract

In this paper, a new pre-fast Fourier transformation (FFT) beamforming approach is proposed for an orthogonal frequency division multiplexing (OFDM) system with an antenna array in wireless local area network (WLAN). Compared with the OFDM system based on traditional beamforming or principle eigen-vector beamforming, it can offer almost the same performance with significant reduction in system structure as well as computational complexity. In addition, it outperforms the system with a switched-beam beamformer. Simulations are conducted to show the effectiveness of the proposed approach

Keywords

OFDM modulation; antenna arrays; array signal processing; computational complexity; eigenvalues and eigenfunctions; fast Fourier transforms; wireless LAN; OFDM system; WLAN; antenna array; computational complexity; orthogonal frequency division multiplexing system; pre-FFT beamforming; pre-fast Fourier transformation beamforming; principle eigen-vector beamforming; switched-beam beamformer; wireless local area network; AWGN; Antenna arrays; Array signal processing; Computational complexity; Computational modeling; Direction of arrival estimation; OFDM; Receiving antennas; Switches; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing, 2006. WiCOM 2006.International Conference on

Conference_Location

Wuhan

Print_ISBN

1-4244-0517-3

Type

conf

DOI

10.1109/WiCOM.2006.53

Filename

4149230