Energy efficiency of dense wireless sensor networks: To cooperate or not to cooperate

Tony Q.S. Quek, Moe Z. Win, Davide Dardari

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

4 Citations (Scopus)

Abstract

Decentralized detection in a network of wireless sensor nodes involves the fusion of information about a phenomenon of interest (POI) from geographically dispersed nodes. In this paper, we investigate a binary decentralized detection problem in a dense wireless sensor network. We consider a scenario in which sensor observations, conditioned on the alternate hypothesis, are independent but not identically distributed across the sensor nodes. We consider two different fusion architectures, namely, the parallel fusion architecture and the cooperate fusion architecture. For each architecture, we derive expressions for the probability of decision error at the fusion center. We analyze the impact of a realistic sensing model, and flooding protocol on the system reliability and energy consumption for both architectures. We demonstrate that a trade-off exists among spatial diversity gain, average energy consumption, node density, and POI intensity in the cooperative architecture.

Original languageEnglish
Title of host publication2006 IEEE International Conference on Communications, ICC 2006
Pages4479-4484
Number of pages6
DOIs
Publication statusPublished - 2006
Event2006 IEEE International Conference on Communications, ICC 2006 - Istanbul, Turkey
Duration: 2006 Jul 112006 Jul 15

Publication series

NameIEEE International Conference on Communications
Volume10
ISSN (Print)0536-1486

Other

Other2006 IEEE International Conference on Communications, ICC 2006
CountryTurkey
CityIstanbul
Period06-07-1106-07-15

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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