Title :
Comparison of pre-FFT and post-FFT beamforming in wireless LANs
Author :
Li Ping´an ; Sun Qin ; Zhao Fengfei
Author_Institution :
School of Information Engineering, Wuhan University of Technology, 430070, China
Abstract :
In this paper, performance of the pre- and post-FFT beamforming schemes are investigated based on the IEEE 802.11g WLAN indoor channel model. A multi-cluster space-time channel with “Bell” shape Doppler power spectrum is used in the simulation to compare the performance between the two different schemes. Two beamforming algorithms, the DOA-based and the dominant-eigenvector-based, are considered in the WLAN OFDM systems for each scheme.
Keywords :
OFDM; beamforming; post-FFT; pre-FFT;
Conference_Titel :
Wireless, Mobile and Multimedia Networks, 2006 IET International Conference on
Conference_Location :
hangzhou, China
Print_ISBN :
0-86341-644-6
