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An increasing number of distributed measurement and control applications requires that network nodes are able to estimate the position and the time measured by other devices on a common spatio-temporal reference frame. Accurate packet timestamping is a necessary condition to achieve this goal. However, in the case of wireless networks, timestamping accuracy is generally quite poor due to the combination...
Wireless positioning systems are interesting for a variety of indoor applications such as security, home automation and ambient assisted living (AAL) services. Unfortunately, the accuracy of distance measurement techniques based on short-range wireless communication transceivers is generally quite poor, mainly because of multipath propagation phenomena. In this paper an analytical model describing...
Time synchronization in wireless sensor networks (WSN) is essential to schedule communication and distributed measurement tasks. In this paper a consensus-based synchronization algorithm is used to compensate dynamically both time offsets and clock frequency skews, thus driving all WSN clocks towards a common time scale. The proposed approach does not require either the election of a master node as...
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