NDLI: A Blind Synchronizer for OFDM Systems Based on SINR Maximization in Multipath Fading Channels

Content Provider	IEEE Xplore Digital Library
Author	Chin, W.-L. Chen, S.-G.
Copyright Year	1967
Abstract	This paper presents a blind synchronizer for orthogonal frequency-division multiplexing (OFDM) systems based on signal-to-interference-and-noise ratio (SINR) maximization. Due to the incurred losses from intersymbol interference (ISI) and intercarrier interference (ICI) introduced by synchronization errors, the SINR of the received data drastically drops. By taking advantage of this characteristic, both the symbol time and carrier frequency offsets are intuitively estimated by maximizing the SINR metric. For the SINR metric, two blind SINR estimations are investigated. The estimations do not need prior knowledge of the channel profiles and transmitted data. As such, the proposed maximum SINR (MSINR) synchronization algorithm is nondata aided so that the transmission efficiency can be improved. Moreover, to reduce the computational complexity, the early-late gate technique is proposed for the implementation of the synchronizer. Simulation results exhibit better performance for the MSINR algorithm than conventional techniques in multipath fading channels.
Sponsorship	IEEE Vehicular Technology Society
Starting Page	625
Ending Page	635
Page Count	11
File Size	610418
File Format	PDF
ISSN	00189545
Volume Number	58
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-02-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	OFDM Signal to noise ratio Fading Frequency synchronization Intersymbol interference Frequency division multiplexing Frequency estimation Communication standards Sampling methods Digital audio broadcasting signal-to-interference-and-noise-ratio (SINR) maximization Blind synchronization early–late gate (ELG) orthogonal frequency-division multiplexing (OFDM) SINR Maximization Blind Synchronization Early-late Gate
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Automotive Engineering Computer Networks and Communications Electrical and Electronic Engineering Aerospace Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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