Title :
Adaptive distributed estimation over wireless sensor networks with packet losses
Author :
Speranzon, Alberto ; Fischione, Carlo ; Johansson, Bjorn ; Johansson, Björn
Author_Institution :
Unilever, Bebington
Abstract :
A distributed adaptive algorithm to estimate a time-varying signal, measured by a wireless sensor network, is designed and analyzed. The presence of measurement noises and of packet losses is considered. Each node of the network locally computes adaptive weights that guarantee to minimize the estimation error variance. Decentralized conditions on the weights, which ensure the stability of the estimates throughout the overall network, are also considered. A theoretical performance analysis of the scheme is carried out both in the presence of perfect and lossy links. Numerical simulations illustrate performance for various network topologies and packet loss probabilities.
Keywords :
adaptive estimation; telecommunication network topology; wireless sensor networks; adaptive distributed estimation; estimation error variance; network topology; packet losses; time-varying signal; wireless sensor networks; Adaptive algorithm; Adaptive systems; Algorithm design and analysis; Computer networks; Estimation error; Loss measurement; Noise measurement; Signal analysis; Signal design; Wireless sensor networks; Distributed filtering; Networked Embedded System; Wireless sensor networks;
Conference_Titel :
Decision and Control, 2007 46th IEEE Conference on
Conference_Location :
New Orleans, LA
Print_ISBN :
978-1-4244-1497-0
Electronic_ISBN :
0191-2216
DOI :
10.1109/CDC.2007.4434928
