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An Efficient Time Synchronization Protocol for Underwater Acoustic Networks with Capability of Prediction

  • Northwestern Polytechnical University Xian

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Time synchronization protocol plays an important role in underwater acoustic (UWA) networks. Nodes need to be coordinated to work as a whole and achieve their functions as sensation and actuation. Many existing time synchronization protocols for UWA networks have been developed to achieve this goal. However, existing protocols can't meet needs of UWA networks in accuracy and energy cost. In this paper, we propose an efficient time synchronization protocol (EF-Sync) for UWA networks. It can fully utilize exchanged messages to make a bidirectional error estimation of clock skew error. And meanwhile, with the help of prediction by using the exponential smoothing algorithm which can be adjusted according to the channel quality, EF-Sync can compensate the clock offset with high accuracy. The simulation results show that it achieves a remarkable higher accuracy with low energy cost.

Original languageEnglish
Title of host publicationOCEANS 2018 MTS/IEEE Charleston, OCEAN 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538648148
DOIs
StatePublished - 7 Jan 2019
EventOCEANS 2018 MTS/IEEE Charleston, OCEANS 2018 - Charleston, United States
Duration: 22 Oct 201825 Oct 2018

Publication series

NameOCEANS 2018 MTS/IEEE Charleston, OCEAN 2018

Conference

ConferenceOCEANS 2018 MTS/IEEE Charleston, OCEANS 2018
Country/TerritoryUnited States
CityCharleston
Period22/10/1825/10/18

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Keywords

  • Bidirectional error estimation
  • Exponential smoothing method
  • Underwater acoustic (UWA) networks

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