NDLI: Low Complexity Blind Residual Carrier Offset Estimation in OFDM-Based Wireless LAN Systems

Content Provider	IEEE Xplore Digital Library
Author	Samir Attallah Wu Yan Bergmans, J.W.M.
Copyright Year	2007
Description	Author affiliation: Dept. of Electr. & Comput. Eng., National Univ. of Singapore (Samir Attallah; Wu Yan)
Abstract	In Liu and Toreli (1998), a blind carrier frequency offset (CFO) estimation method was proposed for orthogonal frequency multiplexing (OFDM) systems. This method makes use of the fact that in practical OFDM systems, there are some subcarriers that do not carry any data. However, the computation complexity of the method is rather high. In this paper, based on practical considerations, we propose a low complexity blind CFO estimation method. We derive an approximate closed-form solution for the CFO estimate. We show that the proposed algorithm achieves similar performance as the method in Liu and Toreli (1998) with significantly reduced computational complexity. For relatively large CFO values, we show that we could use the iterative algorithm in Wu et al. (2005) to improve the performance of the proposed algorithm.
Starting Page	1970
Ending Page	1975
File Size	230663
Page Count	6
File Format	PDF
ISBN	1424406587
ISSN	15253511
DOI	10.1109/WCNC.2007.369
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-03-11
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless LAN OFDM Frequency synchronization Frequency estimation Iterative algorithms AWGN Computational complexity Fading Communications Society Frequency division multiplexing
Content Type	Text
Resource Type	Article

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