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

Sensors

Mi Jeong Kim²  Sung Joon Maeng²  Yong Soo Cho¹ 

[1] School of Electrical and Electronic Engineering, Chung-Ang University, Seoul 156-756, Korea;

关键词: wireless mesh network;    OFDMA;    bio-inspired algorithm;    distributed synchronization;    time difference of arrival;    time synchronization;    frequency synchronization;   

DOI  :  10.3390/s150818287

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.