標題: An SFBC-OFDM Receiver to Combat Multiple Carrier Frequency Offsets in Cooperative Communications
作者: Lu, Tsung-Ta
Lin, Hsin-De
Sang, Tzu-Hsien
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
關鍵字: SFBC;OFDM;cooperative communication;multiple frequency offsets;iterative cancellation
公開日期: 2010
摘要: In this paper, a new space-frequency combination technique is proposed for Alamouti coded Orthogonal Frequency Division Multiplexing (OFDM) in the context of cooperative communications. Since cooperative antennas are distributed, there may exist multiple carrier frequency offsets (MCFOs) which cause problems for conventional space-frequency decoding. The proposed algorithm, taking cues from existing MCFO-compensating algorithms [13][19], combines two sets of separately synchronized signal to mitigate inter-carrier interference (ICI). Iterative interference cancellation and a maximum-ratio-combining-like technique are also deployed to further improve performance with low computational complexity. It is observed that the proposed method achieves better bits error rate (BER) performance and has a superior tolerance of multiple CFOs, compared to existing methods.
URI: http://hdl.handle.net/11536/18946
ISBN: 978-1-4244-8016-6
期刊: 2010 IEEE 21ST INTERNATIONAL SYMPOSIUM ON PERSONAL INDOOR AND MOBILE RADIO COMMUNICATIONS (PIMRC)
起始頁: 899
結束頁: 904
顯示於類別:會議論文