Three-dimensional node localization algorithm for WSN based on differential RSS irregular transmission model

Jianpo Li, Xinxin Zhong, I. Tai Lu

Research output: Contribution to journalArticle

Abstract

The localization accuracy of the conventional three-dimensional (3D) node localization algorithm based on received signal strength (RSS) is restricted by the random signal strength fluctuation caused by the irregular propagation environments. In this paper, we propose an improved localization algorithm based on a differential RSS distance estimation algorithm to minimize the influence of the path loss exponent error. Furthermore, considering the influence of degree of irregularity (DOI), we propose a new radio model and obtain numerically the relation between DOI and the variation of signal transmission ranges. A spherical shell with certain finite thickness is then used to characterize the transmission range irregularity. The simulation results show the path loss exponent has no effect on localization error in the proposed algorithm. The localization errors for various DOIs are significantly lower than the conventional 3D algorithm for different densities of anchor nodes.

Original languageEnglish (US)
Pages (from-to)391-397
Number of pages7
JournalJournal of Communications
Volume9
Issue number5
DOIs
StatePublished - May 2014

Keywords

  • DOI
  • Irregular transmission model
  • RSS
  • Three-dimensional node localization
  • WSN

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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