Fusion of censored decisions in wireless sensor networks

Ruixiang Jiang, Biao Chen

Research output: Contribution to journalArticle

144 Scopus citations

Abstract

Sensor censoring has been introduced for reduced communication rate in a decentralized detection system where decisions made at peripheral nodes need to be communicated to a fusion center. In this letter, the fusion of decisions from censoring sensors transmitted over wireless fading channels is investigated. The knowledge of fading channels, either in the form of instantaneous channel envelopes or the fading statistics, is integrated in the optimum and suboptimum fusion rule design. The sensor censoring and the ensuing fusion rule design have two major advantages compared with the previous work. 1) Communication overhead is dramatically reduced. 2) It allows incoherent detection, hence, the phase information of transmission channels is no longer required. As such, it is particularly suitable for wireless sensor network applications with severe resource constraints.

Original languageEnglish (US)
Pages (from-to)2668-2673
Number of pages6
JournalIEEE Transactions on Wireless Communications
Volume4
Issue number6
DOIs
StatePublished - Nov 1 2005

Keywords

  • Censoring sensor
  • Decision fusion
  • Fading channels
  • Wireless sensor networks

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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