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Clock parameters in wireless sensors experience slow changes due to low‐cost construction and environmental conditions. In this paper, a filter‐based distributed protocol, called FBP, is proposed to dynamically achieve clock synchronization for wireless sensor networks. The idea of FBP is derived from a first‐order filter which is robust to environmental noises. The proposed protocol is fully distributed,...
Clock synchronization is an issue of vital importance in applications of WSNs. This paper proposes a proportional integral estimator-based protocol (EBP) to achieve clock synchronization for wireless sensor networks. As each local clock skew gradually drifts, synchronization accuracy will decline over time. Compared with existing consensus-based approaches, the proposed synchronization protocol improves...
This paper proposes a filter-based distributed protocol to realize time synchronization under time-varying clock parameters. The proposed protocol is derived from a first-order controller and is fully distributed, meaning that by relying merely on its local clock readings and reading announcements from its neighbouring sensor nodes, each node in WSNs can dynamically update its virtual clock and bound...
In this paper, we present a new distributed protocol to achieve the synchronization of time variations and initial times simultaneously. The protocol combines the design methods of controller and estimator to obtain more precise synchronization with higher robustness against noisy inputs mainly generated by crystal oscillators of clocks. Furthermore, the control input is ensured bounded while achieving...
In this paper, a new distributed algorithm is presented to achieve the consensus of time variations and that of initial time simultaneously. By combining both controller and estimator design methods, it obtains higher synchronization precision with stronger robustness against noisy inputs resulted from crystal oscillators. Furthermore, the control input is ensured bounded to make our algorithm realizable...
This paper presents a new distributed power-efficient method consisting of clock synchronization achieving and maintaining protocols. The achieving protocol can realize synchronization of time variations and initial time errors independently and simultaneously with an energy-efficient communication scheme designed in the paper. Then a stopping criterion is proposed to degrade the protocol into a maintaining...
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