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无线传感器网络RBS的优化算法 被引量：8

Improved algorithm of RBS for wireless sensor networks
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摘要 通过对无线传感器网络时间同步以及RBS(参考广播同步)算法的研究,提出了一种RBS的优化算法。在RBS算法时间同步的过程中,针对节点时钟的不稳定性,以及节点间消息交换延迟所引起的同步误差,基于已存在的RBS时间同步算法,利用贝叶斯估计的先验知识和后验分布来减少同步误差。通过使用opnet仿真软件进行仿真,实验显示优化后的算法比原算法的同步精度有了显著的提高。 Based on studying on time synchronization and RBS （reference broadcast synchronization） algorithm in wireless sensor network, improved time synchronization algorithm is improved. During the RBS algorithm time synchronization, the synchronization error introduced by instability of the clock frequency and variable delays of message exchange between pair-wise synchronization nodes; it can reduce the synchronization error by Bayesian estimation＇ s prior information and posterior distribution based on existing synchronization algorithms. The simulation shows that the improved algorithms are better than the original one in the synchronization precision.
作者 孙佳伟 曾子维 庄兵
机构地区 辽宁科技大学计算机科学与工程学院 鞍山市科技局
出处 《计算机工程与设计》 CSCD 北大核心 2009年第1期66-68,84,共4页 Computer Engineering and Design
基金 辽宁省教育厅科学技术研究基金项目(05L002)
关键词 无线传感器网络 时间同步 参考广播同步 同步误差 贝叶斯估计 wireless sensor network time synchronization RBS synchronization error Bayesian estimation
分类号 TP393 [自动化与计算机技术—计算机应用技术]
  • 相关文献

参考文献10

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二级参考文献43

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共引文献1818

同被引文献76

  • 1杨宗凯,赵大胜,王玉明,程文青,何建华.无线传感器网络时钟同步算法综述[J].计算机应用,2005,25(5):1170-1172. 被引量：29
  • 2吉林,丁华平,沈庆宏.基于无线传感器网络的桥梁结构健康监测[J].南京大学学报（自然科学版）,2011,47(1):19-24. 被引量：20
  • 3周贤伟,韦炜,覃伯平.无线传感器网络的时间同步算法研究[J].传感技术学报,2006,19(1):20-25. 被引量：48
  • 4周书民,周建勇,潘仕彬,孙亚民.无线传感网络中时钟同步的研究[J].电子技术应用,2006,32(9):24-26. 被引量：11
  • 5任丰原,董思颖,何滔,林闯.基于锁相环的时间同步机制与算法[J].软件学报,2007,18(2):372-380. 被引量：50
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引证文献8

二级引证文献9

计算机工程与设计
2009年 第1期

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