Proceedings ArticleDOI
Power-Efficient Clock Synchronization using Two-Way Timing Message Exchanges in Wireless Sensor Networks
Kyoung-Lae Noh,Qasim M. Chaudhari,Erchin Serpedin,Bruce W. Suter +3 more
- pp 1143-1149
TLDR
Novel clock skew estimators for the protocols based on two-way timing message exchanges to achieve long term reliability of synchronization by significantly increasing the re-synchronization period are proposed.Abstract:
A number of time synchronization protocols for wireless sensor networks (WSNs) have been recently proposed aiming at maximizing the accuracy and minimizing the power efficiency. This paper proposes novel clock skew estimators for the protocols based on two-way timing message exchanges to achieve long term reliability of synchronization. The proposed clock synchronization mechanism is far more power efficient than the conventional ones by significantly increasing the re-synchronization period. Moreover, it can be applied to the conventional protocols without any additional overhead. In fact, the proposed estimators assume simple steps and low complexity, a feature which is strongly demanding for WSNs consisting of cheap and small nodesread more
Citations
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Journal ArticleDOI
A combined hardware-software approach for acoustic sensor network synchronization
TL;DR: An approach for synchronizing a wireless acoustic sensor network using a two-stage procedure employing a Kalman filter with a dedicated observation error model and a gossiping algorithm which estimates the average clock frequency and phase of the sensor nodes.
Proceedings ArticleDOI
An energy-efficient clock synchronization protocol for Wireless Sensor Networks
TL;DR: In this article, a combined synchronization protocol based on the IEEE 1588 standard for wired networks and the PBS (Pairwise Broadcast Synchronization) protocol for sensor networks is proposed.
Dissertation
Étude et développement d'une plateforme de communication pour les réseaux de capteurs acoustiques sans fil : application au contrôle-santé des rails par corrélation du bruit ambiant
TL;DR: In this paper, a prototype-plateforme de communication without fil base on ZigBee/IEEE 802.15.4 is presented, and a solution for synchronisation des capteurs lors du prelevement du signal basee sur la norme IEEE 802.14.4 a ete proposee and validee par une campagne de mesures.
Proceedings ArticleDOI
Multi-hop time synchronization for Underwater Acoustic Networks
TL;DR: This paper proposes a multi-hop time synchronization scheme for Underwater Acoustic Networks (MSUAN), and uses OPNET to simulate MSUAN, and the simulation result under pyramid topology shows that even the hop accumulates to 8, for MS UAN, the average offset error is maintained at about 58us and the average skew error is below 2ppm.
Journal ArticleDOI
Least Squares-Based Estimation of Relative Clock Offset and Frequency in Sensor Networks with High Latency
TL;DR: This work proposes, study, and demonstrates the effectiveness of several alternative least squares-based estimators for Time Synchronization for High Latency (TSHL), and seeks to improve the accuracy of TSHL.
References
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Journal ArticleDOI
Clock synchronization for wireless sensor networks: a survey
TL;DR: In this paper, a survey and evaluation of clock synchronization protocols based on a palette of factors such as precision, accuracy, cost, and complexity is presented, which can help developers either in choosing an existing synchronization protocol or in defining a new protocol that is best suited to the specific needs of a sensor network application.
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Digital signal processing for sonar
TL;DR: This paper is a tutorial which describes "main stream" sonar digital signal processing functions along with the associated implementation considerations to promote further cross-fertilization of ideas amongdigital signal processing applications in sonar, radar, speech, communications, seismology, and other related fields.
Proceedings ArticleDOI
Time Synchronization for High Latency Acoustic Networks
Affan A. Syed,John Heidemann +1 more
TL;DR: Although at very short distances existing protocols are adequate, TSHL shows twice the accuracy at 500m, demonstrating the need to model both clock skew and propagation latency, and it achieves precise time synchronization with minimal energy cost.
Journal ArticleDOI
Analysis of synchronization algorithms with time-out control over networks with exponentially symmetric delays
TL;DR: It is shown that the MnLD algorithm achieves the best accuracy over symmetric links without having to impose a strict TO control, which substantially speeds up the algorithm.