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1. 西安电子科技大学通信工程学院 西安 710071
2. 桂林电子科技大学信息与通信学院 桂林 541004
[ "赵响,女,西安电子科技大学博士生,主要研究方向为无线传感器网络中的定位与同步。" ]
[ "林基明,男,桂林电子科技大学教授,主要研究方向为移动通信、无线传感器网络中的定位与同步。" ]
网络出版日期:2014-10,
纸质出版日期:2014-10-20
移动端阅览
赵响, 林基明. 网络随机指数噪声环境下时钟同步与定位的联合研究[J]. 电信科学, 2014,30(10):99-102.
Xiang Zhao, Jiming Lin. Joint Research on Clock Synchronization and Localization in Wireless Sensor Network with Stochastic Exponentially Distributed Noise[J]. Telecommunications science, 2014, 30(10): 99-102.
赵响, 林基明. 网络随机指数噪声环境下时钟同步与定位的联合研究[J]. 电信科学, 2014,30(10):99-102. DOI: 10.3969/j.issn.1000-0801.2014.10.015.
Xiang Zhao, Jiming Lin. Joint Research on Clock Synchronization and Localization in Wireless Sensor Network with Stochastic Exponentially Distributed Noise[J]. Telecommunications science, 2014, 30(10): 99-102. DOI: 10.3969/j.issn.1000-0801.2014.10.015.
在无线传感器网络中,基于消息到达时间的时钟同步与定位联合研究是一项重要的研究课题。网络的随机时延一般用指数分布描述。基于消息到达时间的测量值,推出了在指数随机噪声条件下同步与定位的联合最大似然估计(JMLE)算法以及联合最佳线性无偏估计(JBLUE)算法。仿真表明,与已有的联合算法相比,提出的JMLE算法与JBLUE算法估计精度较高。
Joint clock synchronization and localization based on the time of arrival(TOA)measurements is a very important research topic for many wireless sensor network applications. The exponentially distributed link delay is usually used to describe the practical network link condition. The joint maximum likelihood estimation(JMLE)on clock synchronization and localization problem was first proposed based on the TOA measurements. JMLE was optimal only for Gaussian delay
as for the exponentially distributed delay
the joint best linear unbiased estimation (JBLUE)was then proposed. The result is derived via simulation: JMLE and JBLUE are always superior to the latest joint algorithm
with the highest estimation accuracy.
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