title: Distributed Synchronization Technique for OFDMA-Based Wireless Mesh Networks Using a Bio-Inspired Algorithm.
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.
authors.affiliation: School of Electrical and Electronic Engineering, Chung-Ang University, Seoul 156-756, Korea. kimmj@cau.ac.kr.
authors.forename: Mi Jeong
authors.initials: MJ
authors.lastname: Kim
authors.affiliation: School of Electrical and Electronic Engineering, Chung-Ang University, Seoul 156-756, Korea. aod0527@naver.com.
authors.forename: Sung Joon
authors.initials: SJ
authors.lastname: Maeng
authors.affiliation: School of Electrical and Electronic Engineering, Chung-Ang University, Seoul 156-756, Korea. yscho@cau.ac.kr.
authors.forename: Yong Soo
authors.initials: YS
authors.lastname: Cho
mesh_terms: D000465:Algorithms; D003195:Computer Communication Networks; D003198:Computer Simulation; D008962:Models, Theoretical; D013997:Time Factors; D059015:Wireless Technology
keywords: OFDMA; bio-inspired algorithm; distributed synchronization; frequency synchronization; time difference of arrival; time synchronization; wireless mesh network