Model-Based Design of Tree WSNs for Decentralized Detection †

Sensors

Ashraf Tantawy¹  Xenofon Koutsoukos²  Gautam Biswas² 

[1] RasGas Company Limited, Doha 24200, Qatar;Institute for Software Integrated Systems, Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, TN 37235, USA; E-Mails:

关键词: cyber-physical systems;    decentralized detection;    tree sensor networks;    networked information fusion;    wireless sensor network;    multiaccess communication;    transmission control policy;    modeling;    simulation;    optimization;   

DOI  :  10.3390/s150820608

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.