Open Access

An Efficient Multibit Aggregation Scheme for Multihop Wireless Sensor Networks

  • Bhushan G. Jagyasi1Email author,
  • Bikash K. Dey2,
  • S. N. Merchant2 and
  • U. B. Desai2
EURASIP Journal on Wireless Communications and Networking20092008:649581

https://doi.org/10.1155/2008/649581

Received: 14 December 2007

Accepted: 2 December 2008

Published: 11 January 2009

Abstract

A single-hop wireless sensor network for distributed detection has been considered in the majority of the existing literature. However, a wireless sensor network for an event detection application with cheap and short range sensors is likely to be a multihop network. Here we consider a distributed detection problem in a multihop wireless sensor network with tree topology. We propose an optimum multibit decision fusion rule derived from the previously known optimum likelihood ratio for a single-hop network with star topology. Subsequently, we present an efficient multibit decision fusion rule for a multihop wireless sensor network with tree topology. Through numerical results, the proposed scheme is shown to achieve a significant improvement in detection accuracy over existing distributed detection schemes.

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Authors’ Affiliations

(1)
TCS Innovation Labs, Mumbai, Tata Consultancy Services
(2)
SPANN Laboratory, Electrical Engineering Department, Indian Institute of Technology

Copyright

© Bhushan G. Jagyasi et al. 2008

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.