Clock synchronization of wireless sensor networks

Yik Chung Wu, Qasim Chaudhari, Erchin Serpedin

Research output: Contribution to journalArticle

361 Citations (Scopus)

Abstract

Clock synchronization is a critical component in the operation of wireless sensor networks (WSNs), as it provides a common time frame to different nodes. It supports functions such as fusing voice and video data from different sensor nodes, time-based channel sharing, and coordinated sleep wake-up node scheduling mechanisms. Early studies on clock synchronization for WSNs mainly focused on protocol design. However, the clock synchronization problem is inherently related to parameter estimation, and, recently, studies on clock synchronization began to emerge by adopting a statistical signal processing framework. In this article, a survey on the latest advances in the field of clock synchronization of WSNs is provided by following a signal processing viewpoint. This article illustrates that many of the proposed clock synchronization protocols can be interpreted and their performance assessed using common statistical signal processing methods. It is also shown that advanced signal processing techniques enable the derivation of optimal clock synchronization algorithms under challenging scenarios.

Original languageEnglish
Article number5670639
Pages (from-to)124-138
Number of pages15
JournalIEEE Signal Processing Magazine
Volume28
Issue number1
DOIs
Publication statusPublished - 1 Jan 2011

Fingerprint

Clock Synchronization
Wireless Sensor Networks
Clocks
Wireless sensor networks
Synchronization
Signal Processing
Signal processing
Vertex of a graph
Network protocols
Support Function
Sleep
Wake
Sensor nodes
Parameter estimation
Parameter Estimation
Sharing
Scheduling
Sensor
Scenarios

ASJC Scopus subject areas

  • Signal Processing
  • Electrical and Electronic Engineering
  • Applied Mathematics

Cite this

Clock synchronization of wireless sensor networks. / Wu, Yik Chung; Chaudhari, Qasim; Serpedin, Erchin.

In: IEEE Signal Processing Magazine, Vol. 28, No. 1, 5670639, 01.01.2011, p. 124-138.

Research output: Contribution to journalArticle

Wu, Yik Chung ; Chaudhari, Qasim ; Serpedin, Erchin. / Clock synchronization of wireless sensor networks. In: IEEE Signal Processing Magazine. 2011 ; Vol. 28, No. 1. pp. 124-138.
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