ICASSP 2006 - May 15-19, 2006 - Toulouse, France

Technical Program

Paper Detail

Paper:SPCOM-L7.3
Session:Wireless Sensor Networks
Time:Friday, May 19, 14:40 - 15:00
Presentation: Lecture
Topic: Signal Processing for Communication: Distributed and collaborative signal processing
Title: SOI-KF: Distributed Kalman Filtering with Low-Cost Communications using the Sign Of Innovations
Authors: Alejandro Ribeiro, Georgios Giannakis, Stergios Roumeliotis, University of Minnesota, United States
Abstract: We derive and analyze distributed state estimators of dynamical stochastic processes, whereby low communication cost is effected by requiring the transmission of a single bit per observation. Following a Kalman filtering (KF) approach, we develop recursive algorithms for distributed state estimation based on the sign of innovations (SOI). Even though SOI-KF can afford minimal communication overhead, we prove that in terms of performance and complexity it comes very close to the clairvoyant KF which is based on the analog-amplitude observations. Reinforcing our conclusions, we show that the SOI-KF applied to distributed target tracking based on distance only observations yields accurate estimates at low communication cost.



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