Distributed diversity in ultrawide bandwidth wireless sensor networks

Tony Q.S. Quek, Moe Z. Win, Marco Chiani

Research output: Contribution to journalConference articlepeer-review

15 Citations (Scopus)

Abstract

In this paper we consider a decentralized detection problem in ultrawide bandwidth (UWB) wireless sensor network (WSN). The system model assumes that all sensor nodes have established an ad-hoc network for sharing the information before sending the common message to the fusion center. The architecture is asynchronous and communication channels between the local sensors to the fusion center are subjected to fading and noise. Our communication strategy employs a UWB transmitted-reference (TR) signaling scheme. We first analyze the asymptotic performance of our communication strategy via the Chernoff bound and show that the upper bound on the probability of decision error at the fusion center decays exponentially with increasing number of nodes. Simple link budget analysis is given to demonstrate the need for distributed diversity in energy constrained large scale WSN. We also derive the required average transmission power per bit of each node to achieve a target BER at the fusion center and quantify the energy efficiency of our communication strategy.

Original languageEnglish
Pages (from-to)1355-1359
Number of pages5
JournalIEEE Vehicular Technology Conference
Volume61
Issue number2
Publication statusPublished - 2005
Event2005 IEEE 61st Vehicular Technology Conference -VTC 2005 - Spring Stockholm: Paving the Path for a Wireless Future - Stockholm, Sweden
Duration: 2005 May 302005 Jun 1

All Science Journal Classification (ASJC) codes

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

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