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Paper detail

Joint localization and clock synchronization for wireless sensor networks

A fully-asynchronous network with one target sensor and a few anchors (nodes with known locations) is considered. Localization and synchronization are traditionally treated as two separate problems. In this paper, localization and synchronization is studied under a unified framework. We present a new model in which time-stamps obtained either via two-way communication between the nodes or with a broadcast based protocol can be used in a simple estimator based on least-squares (LS) to jointly estimate the position of the target node as well as all the unknown clock-skews and clock-offsets. The Cramér-Rao lower bound (CRLB) is derived for the considered problem and is used as a benchmark to analyze the performance of the proposed estimator.

preprint2013arXivOpen access
Sundeep Prabhakar ChepuriGeert LeusAlle-Jan van der Veen
math.ITInformation Theory
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Sundeep Prabhakar ChepuriGeert LeusAlle-Jan van der Veen

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