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Compensation of Linear Multiscale Doppler for OFDM-Based Underwater Acoustic Communication Systems
Joint Authors
Neasham, J. A.
Tsimenidis, Charalampos C.
Abdelkareem, A. E.
Sharif, B. S.
Source
Journal of Electrical and Computer Engineering
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-07-18
Country of Publication
Egypt
No. of Pages
16
Main Subjects
Engineering Sciences and Information Technology
Information Technology and Computer Science
Abstract EN
In particular cases, such as acceleration, it is required to design a receiver structure that is capable of accomplishing time varying Doppler compensation.
In this paper, two approaches are taken into consideration in order to estimate the symbol timing offset parameter.
The first method employed to achieve an estimate of this particular parameter is based upon centroid localization and this prediction is reinforced by a second technique which utilises linear prediction, based on the assumption that the speed changes linearly during the OFDM symbol time.
Subsequently, the two estimations of the symbol timing offset parameter are smoothed in order to obtain a fine tuned approximation of the Doppler scale.
Additionally, the effects of weighting coefficients on smoothing the Doppler scale and on the performance of the receiver are also investigated.
The proposed receiver is investigated, incorporating an improvement that includes fine tuning of the coarse timing synchronization in order to accommodate the time-varying Doppler.
Based on this fine-tuned timing synchronization, an extension to the improved receiver is presented to assess the performance of two point correlations.
The proposed algorithms' performances were investigated using real data obtained from an experiment that took place in the North Sea in 2009.
American Psychological Association (APA)
Abdelkareem, A. E.& Sharif, B. S.& Tsimenidis, Charalampos C.& Neasham, J. A.. 2012. Compensation of Linear Multiscale Doppler for OFDM-Based Underwater Acoustic Communication Systems. Journal of Electrical and Computer Engineering،Vol. 2012, no. 2012, pp.1-16.
https://search.emarefa.net/detail/BIM-448860
Modern Language Association (MLA)
Abdelkareem, A. E.…[et al.]. Compensation of Linear Multiscale Doppler for OFDM-Based Underwater Acoustic Communication Systems. Journal of Electrical and Computer Engineering No. 2012 (2012), pp.1-16.
https://search.emarefa.net/detail/BIM-448860
American Medical Association (AMA)
Abdelkareem, A. E.& Sharif, B. S.& Tsimenidis, Charalampos C.& Neasham, J. A.. Compensation of Linear Multiscale Doppler for OFDM-Based Underwater Acoustic Communication Systems. Journal of Electrical and Computer Engineering. 2012. Vol. 2012, no. 2012, pp.1-16.
https://search.emarefa.net/detail/BIM-448860
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-448860