Minimum variance filter with packet dropouts in wireless sensor networks

Authors:
Yonggui Liu;Bugong Xu
Affiliations:
School of automation science and engineering, South China University of Technology, Guangzhou, China;School of automation science and engineering, South China University of Technology, Guangzhou, China
Venue:
ICICS'09 Proceedings of the 7th international conference on Information, communications and signal processing
Year:
2009

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Abstract

This paper is concerned with the filtering problem for both discrete-time stochastic linear (DTSL) system and discrete-time stochastic nonlinear (DTSN) system. In DTSL system, an optimal filter with packet dropouts is designed across unreliable wireless sensor networks (WSNs); In DTSN system, a suboptimal filter is derived by similar method over unreliable WSNs. An application example is given and corresponding simulation results show that the proposed filters are effective compared by standard Kalman filter (KF) or extended Kalman filter (EKF) in WSNs.