NDLI: Efficient Frequency Offset Estimation and Tracking for Reuse-1 OFDMA Systems

Content Provider	IEEE Xplore Digital Library
Author	Bhargava, Y. Giridhar, K.
Copyright Year	2006
Description	Author affiliation: Dept. of Electr. Eng., Indian Inst. of Technol., Madras (Bhargava, Y.; Giridhar, K.)
Abstract	Orthogonal frequency division multiplexing (OFDM) systems are highly sensitive to frequency synchronization errors which cause inter-carrier interference, leading to degradation in the system performance. In this paper, a pragmatic timing and frequency synchronization scheme for reuse-1 OFDMA systems that is compatible with IEEE 802.16d/e wireless MAN standard is proposed. The algorithm uses cyclic prefix correlation technique to both estimate and track OFDMA frame boundary and fractional frequency offset. Once the preamble is captured, the integral part of the frequency offset and cell-specific preamble code can be estimated. This novel scheme is computationally efficient and robust to co-channel interference and multipath fading. Simulation results show that the proposed algorithm gives excellent performance even at very low signal to interference noise ratios
Starting Page	1
Ending Page	4
File Size	208935
Page Count	4
File Format	PDF
ISBN	1424405483
DOI	10.1109/TENCON.2006.343926
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-11-14
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Frequency estimation OFDM Frequency synchronization Degradation System performance Timing Wireless sensor networks Noise robustness Interchannel interference Fading
Content Type	Text
Resource Type	Article

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