Báo cáo hóa học: " Research Article Analysis of Distributed Consensus Time Synchronization with Gaussian Delay over Wireless "

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Research Article Analysis of Distributed Consensus Time Synchronization with Gaussian Delay over Wireless | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2009 Article ID 528161 9 pages doi 2009 528161 Research Article Analysis of Distributed Consensus Time Synchronization with Gaussian Delay over Wireless Sensor Networks Gang Xiong and Shalinee Kishore Department of Electrical and Computer Engineering Lehigh University Bethlehem PA 18015 USA Correspondence should be addressed to Shalinee Kishore skishore@ Received 28 June 2008 Accepted 6 May 2009 Recommended by Visa Koivunen This paper presents theoretical results on the convergence of the distributed consensus timing synchronization DCTS algorithm for wireless sensor networks assuming general Gaussian delay between nodes. The asymptotic expectation and mean square of the global synchronization error are computed. The results lead to the definition of a time delay balanced network in which average timing consensus between nodes can be achieved despite random delays. Several structured network architectures are studied as examples and their associated simulation results are used to validate analytical findings. Copyright 2009 G. Xiong and S. Kishore. 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. 1. Introduction Wireless sensor networks are typically comprised of inexpensive small-sized power-limited terminals. In a variety of applications sensor nodes are required to maintain accurate time synchronization for example moving object tracking reconnaissance and surveillance environmental monitoring and so forth 1 . This necessitates algorithms that achieve and maintain global time synchronization at all network nodes that is algorithms that align all nodes to a common notion of time. Due to imperfections in low-cost hardware nodes and the decentralized nature of wireless sensor networks global .

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