NDLI: Topology optimisation-based distributed estimation in relay assisted wireless sensor networks

Content Provider	IET Digital Library
Author	Yan, Jing Chen, Cailian Luo, Xiaoyuan Liang, Hao Guan, Xinping Yang, Xian
Abstract	This study studies a distributed estimation problem in relay assisted wireless sensor networks (WSNs). Different from most existing works, the network consists of two kinds of nodes, that is, sensor nodes (SNs) which is capable of sensing and computing and relay nodes (RNs), which is only capable of simple data aggregation. The problem of how to coordinate two kinds of nodes to facilitate distributed estimation is challenging because of their heterogeneous capability. The authors first develop a min-weighted rigid graph-based topology optimisation scheme to reduce the redundancy of communication links such that the energy consumption in the relay assisted WSN can be reduced. With the optimised topology, a consensus-based estimation algorithm is proposed for SNs and RNs, respectively. The asymptotic unbiasedness and consistency of the estimation algorithm are analysed in the presence of measurement and communication noises. The proposed method is applied to estimate the distribution of slab temperature in the hot rolling process. It is demonstrated that the topology optimisation reduces communication energy consumption, while the deployment of RNs improves temperature estimation accuracy as compared to a homogeneous WSN with SNs only.
Starting Page	2219
Ending Page	2229
Page Count	11
ISSN	17518644
Volume Number	8
e-ISSN	17518652
Issue Number	Issue 18, Dec (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-cta/8/18
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-cta.2014.0163
Journal	IET Control Theory & Applications
Publisher Date	2014-11-04
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Communication Link Communication Network Design, Planning And Routing Data Aggregation Distributed Estimation Energy Consumption Estimation Algorithm Graph-based Topology Optimisation Scheme Relay Assisted Wireless Sensor Network Relay Network Relay Node Sensor Node Telecommunication Telecommunication Network Topology Wireless Sensor Network WSN
Content Type	Text
Resource Type	Article
Subject	Control and Optimization Control and Systems Engineering Human-Computer Interaction Electrical and Electronic Engineering Computer Science Applications

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