Variational message passing for joint localization and synchronization in wireless sensor networks

Weijie Yuan, Nan Wu*, Hua Wang, Bin Li, Jingming Kuang

*Corresponding author for this work

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

5 Citations (Scopus)

Abstract

We consider an asynchronous sensor network where target sensors aim to locate themselves unambiguously. Timing information is a vital requirement for time-based localization. Joint localization and synchronization estimation can improve position accuracy and reduce both communication overhead and power cost. In this paper, a novel distributed cooperative joint localization and synchronization algorithm based on factor graph and variational message passing (VMP) is proposed. We linearize the nonlinear terms in observation function in order to obtain a closed Gaussian form solution of the joint estimation problem. Simulation results show that the proposed joint localization and synchronization method performs very close to those sample based approaches with much lower complexity and communication overhead.

Original languageEnglish
Title of host publication2014 IEEE/CIC International Conference on Communications in China, ICCC 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages437-441
Number of pages5
ISBN (Electronic)9781479941469
DOIs
Publication statusPublished - 12 Jan 2015
Event2014 IEEE/CIC International Conference on Communications in China, ICCC 2014 - Shanghai, China
Duration: 13 Oct 201415 Oct 2014

Publication series

Name2014 IEEE/CIC International Conference on Communications in China, ICCC 2014

Conference

Conference2014 IEEE/CIC International Conference on Communications in China, ICCC 2014
Country/TerritoryChina
CityShanghai
Period13/10/1415/10/14

Keywords

  • Factor graph
  • Gaussian message passing
  • Joint localization and synchronization
  • Variational method
  • Wireless sensor network

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