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Sensors 2015, 15(8), 18287-18301; doi:10.3390/s150818287

Distributed Synchronization Technique for OFDMA-Based Wireless Mesh Networks Using a Bio-Inspired Algorithm

School of Electrical and Electronic Engineering, Chung-Ang University, Seoul 156-756, Korea
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Academic Editor: Leonhard M. Reindl
Received: 1 June 2015 / Revised: 16 July 2015 / Accepted: 22 July 2015 / Published: 28 July 2015
(This article belongs to the Section Sensor Networks)
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Abstract

In this paper, a distributed synchronization technique based on a bio-inspired algorithm is proposed for an orthogonal frequency division multiple access (OFDMA)-based wireless mesh network (WMN) with a time difference of arrival. The proposed time- and frequency-synchronization technique uses only the signals received from the neighbor nodes, by considering the effect of the propagation delay between the nodes. It achieves a fast synchronization with a relatively low computational complexity because it is operated in a distributed manner, not requiring any feedback channel for the compensation of the propagation delays. In addition, a self-organization scheme that can be effectively used to construct 1-hop neighbor nodes is proposed for an OFDMA-based WMN with a large number of nodes. The performance of the proposed technique is evaluated with regard to the convergence property and synchronization success probability using a computer simulation. View Full-Text
Keywords: wireless mesh network; OFDMA; bio-inspired algorithm; distributed synchronization; time difference of arrival; time synchronization; frequency synchronization wireless mesh network; OFDMA; bio-inspired algorithm; distributed synchronization; time difference of arrival; time synchronization; frequency synchronization
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Kim, M.J.; Maeng, S.J.; Cho, Y.S. Distributed Synchronization Technique for OFDMA-Based Wireless Mesh Networks Using a Bio-Inspired Algorithm. Sensors 2015, 15, 18287-18301.

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