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Sensors 2015, 15(8), 20608-20647; doi:10.3390/s150820608

Model-Based Design of Tree WSNs for Decentralized Detection

1
RasGas Company Limited, Doha 24200, Qatar
2
Institute for Software Integrated Systems, Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, TN 37235, USA
This paper is an extended version of our paper published in Tantawy, A.; Koutsoukos, X.; Biswas, G. A Cross-Layer Design for Decentralized Detection in Tree Sensor Networks. In Proceeding of IEEE 8th International Conference on Distributed Computing in Sensor Systems (DCOSS), Hangzhou, China, 16–18 May 2012. This paper is also a generalization of our paper “Tantawy, A.; Koutsoukos, X.; Biswas, G. Cross-layer Design for Decentralized Detection in WSNs, EURASIP J. Adv. Sig. Proc, 2014, 2014, 43”.
*
Author to whom correspondence should be addressed.
Academic Editor: Albert Cheng
Received: 1 January 2015 / Accepted: 3 August 2015 / Published: 20 August 2015
(This article belongs to the Special Issue Cyber-Physical Systems)
View Full-Text   |   Download PDF [1958 KB, uploaded 20 August 2015]   |  

Abstract

The classical decentralized detection problem of finding the optimal decision rules at the sensor and fusion center, as well as variants that introduce physical channel impairments have been studied extensively in the literature. The deployment of WSNs in decentralized detection applications brings new challenges to the field. Protocols for different communication layers have to be co-designed to optimize the detection performance. In this paper, we consider the communication network design problem for a tree WSN. We pursue a system-level approach where a complete model for the system is developed that captures the interactions between different layers, as well as different sensor quality measures. For network optimization, we propose a hierarchical optimization algorithm that lends itself to the tree structure, requiring only local network information. The proposed design approach shows superior performance over several contentionless and contention-based network design approaches. View Full-Text
Keywords: cyber-physical systems; decentralized detection; tree sensor networks;networked information fusion; wireless sensor network; multiaccess communication;transmission control policy; modeling; simulation; optimization cyber-physical systems; decentralized detection; tree sensor networks;networked information fusion; wireless sensor network; multiaccess communication;transmission control policy; modeling; simulation; optimization
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. (CC BY 4.0).

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Tantawy, A.; Koutsoukos, X.; Biswas, G. Model-Based Design of Tree WSNs for Decentralized Detection. Sensors 2015, 15, 20608-20647.

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