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B. Etzlinger, F. Meyer, A. Springer, F. Hlawatsch, H. Wymeersch:
"Cooperative Simultaneous Localization and Synchronization: A Distributed Hybrid Message Passing Algorithm";
Vortrag: Asilomar Conference on Signals, Systems, and Computers, Pacific Groove, CA; 03.11.2013 - 06.11.2013; in: "Asilomar 2013", (2013), 5 S.

Localization and synchronization in wireless networks are strongly related when they are based on inter-node time measurements.
We leverage this relation by presenting a message passing algorithm for cooperative simultaneous localization and synchronization (CoSLAS). The proposed algorithm jointly estimates the locations and clock parameters of the network nodes in a fully decentralized manner while requiring time measurements and communications only between neighboring nodes and making only minimal assumptions about the network topology. Low computation and communication requirements are achieved by a hybrid use of sample-based and Gaussian belief propagation. Our simulations demonstrate performance advantages of the proposed CoSLAS algorithm over separate state-of-the-art localization and synchronization algorithms.

Network synchronization, localization, distributed estimation, belief propagation, particle methods, Gaussian message passing, factor graph, CoSLAS

http://publik.tuwien.ac.at/files/PubDat_223573.pdf