Cooperative simultaneous localization and synchronization: Toward a low-cost hardware implementation
Paper i proceeding, 2014

Cooperative sensor self-localization (CSL) in wireless networks usually requires the nodes to be equipped with specific ranging hardware including ultra-wideband or ultrasonic distance sensors. Such designs are not suitable for application in low-cost, low-power sensor networks. Here, we demonstrate how low-cost, low-power, asynchronous sensor nodes can be used to perform CSL (and, simultaneously, distributed synchronization) by means of time-stamped communication without additional ranging hardware. Our method combines a belief propagation message passing algorithm for cooperative simultaneous localization and synchronization (CoSLAS) with a MAC-layer time stamping scheme.We validate the models underlying the CoSLAS algorithm by means of measurements, and we demonstrate that the localization accuracy achieved by our hardware implementation is far better than that corresponding to the time resolution and measurement errors of the hardware.

Sensor nodes

Distributed synchronization

Localization accuracy

Synchronization Asynchronous sensor

Signal processing

Sensor networks

Belief propagation

Hardware implementations


B. Etzlinger

Johannes Kepler Universitat Linz

Florian Meyer

Technische Universitat Wien

Henk Wymeersch

Signaler och system, Kommunikationssystem, informationsteori och antenner, Kommunikationssystem

Franz Hlawatsch

Technische Universitat Wien

G.R.J. Müller

Johannes Kepler Universitat Linz

A. Springer

Johannes Kepler Universitat Linz

Proceedings of the IEEE Sensor Array and Multichannel Signal Processing Workshop

2151870X (eISSN)

33-36 6882331


Elektroteknik och elektronik