Channel aware iterative source localization for wireless sensor networks

Engin Maşazade, Ruixin Niu, Pramod K. Varshney, Mehmet Keskinoz

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

In this paper, we propose an energy efficient iterative source localization scheme in wireless sensor networks (WSNs). Instead of sending data from all the sensors to the fusion center, a coarse location estimate is first obtained from a set of anchor sensors. Then, a few non-anchor sensors are activated at a time to refine the location estimate in an iterative manner. We assume that the channels between sensors and the fusion center are subject to fading and noise. The fusion center is assumed to either have the complete or partial channel knowledge. Based on the received information at each iteration, the minimum mean squared error (MMSE) estimate of the source location is approximated using a Monte Carlo method. Then, in order to activate the non-anchor sensors for the next iteration, we develop a mutual information (MI)-based sensor selection scheme. Simulation results for the partial channel knowledge (PCK) and the complete channel knowledge (CCK) are presented to show the performance of the proposed approach.

Original languageEnglish (US)
Title of host publication13th Conference on Information Fusion, Fusion 2010
StatePublished - Dec 1 2010
Externally publishedYes
Event13th Conference on Information Fusion, Fusion 2010 - Edinburgh, United Kingdom
Duration: Jul 26 2010Jul 29 2010

Publication series

Name13th Conference on Information Fusion, Fusion 2010

Other

Other13th Conference on Information Fusion, Fusion 2010
CountryUnited Kingdom
CityEdinburgh
Period7/26/107/29/10

Keywords

  • Mutual information
  • Posterior Cramér-Rao lower bound
  • Sensor selection
  • Source localization
  • Wireless sensor networks

ASJC Scopus subject areas

  • Information Systems

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  • Cite this

    Maşazade, E., Niu, R., Varshney, P. K., & Keskinoz, M. (2010). Channel aware iterative source localization for wireless sensor networks. In 13th Conference on Information Fusion, Fusion 2010 [5711972] (13th Conference on Information Fusion, Fusion 2010).