Title :
A Novel Pre-FFT Beamforming for an OFDM System with an Antenna Array in WLAN
Author :
Ping, Li ; Zhaofengfei
Author_Institution :
Wuhan Technol. Univ.
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;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2006. WiCOM 2006.International Conference on
Conference_Location :
Wuhan
Print_ISBN :
1-4244-0517-3
DOI :
10.1109/WiCOM.2006.53
