NDLI: Timing Synchronization for Interleaved OFDMA Uplink System

Content Provider	IEEE Xplore Digital Library
Author	En Zhou Hui Zhao Wenbo Wang
Copyright Year	2006
Description	Author affiliation: Wireless Signal Process. & Network Lab., Beijing Univ. of Posts & Telecommun. (En Zhou; Hui Zhao; Wenbo Wang)
Abstract	This paper presents a symbol timing synchronization method for interleaved OFDMA uplink system in broadband multipath Rayleigh channel. The proposed timing synchronization method contains two steps: coarse and fine time synchronization. The coarse time synchronization is desired to locate the strongest path while the fine time synchronization is desired to locate the first path and both of the coarse and fine time synchronizations are performed in time domain. Two OFDM symbols are designed for timing synchronization, of which the first is for coarse time synchronization and the second is for fine time synchronization. The user specific pilot signals are constructed in the whole obtained system band in the coarse timing preamble while the user exclusive subcarrier set in the fine timing preamble. In fine time synchronization scheme, for the user specific pilot signals are constructed in different subchannels, they have special ideal autocorrelation and cross-correlation properties, which can well suppress the multi-user interferences. Simulations have been performed in MATRICE channel C, which demonstrate that the proposed timing synchronization method can work well in interleaved OFDMA uplink system. And the proposed timing estimator is also robust in frequency asynchronous environment
Sponsorship	IEEE Circuits and Syst. Soc. HKUST UESTC City Univ. of Hong Kong
Starting Page	1147
Ending Page	1152
File Size	6067780
Page Count	6
File Format	PDF
ISBN	0780395840
DOI	10.1109/ICCCAS.2006.284850
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-06-25
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Interference suppression Base stations OFDM Rayleigh channels Signal processing Downlink Frequency estimation Timing Autocorrelation Frequency synchronization
Content Type	Text
Resource Type	Article

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