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IEICE Transactions on Communications 2008 E91-B(12):4013-4016; doi:10.1093/ietcom/e91-b.12.4013
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Copyright © 2008 The Institute of Electronics, Information and Communication Engineers

Regular Section -- Letters -- Network

An Efficient RSS-Based Localization Scheme with Calibration in Wireless Sensor Networks

Cong TRAN-XUAN1, Eunchan KIM2 and Insoo KOO1

1 The authors are with School of Electrical Engineering, University of Ulsan, Korea. E-mail: iskoo{at}ulsan.ac.kr, 2 The author is with the Department of Information and Communications, Gwangju Institute of Science and Technology, Korea.


  Abstract

In wireless sensor networks (WSNs), localization using the received signal strength (RSS) method is famous for easy adaptation and low cost where measuring the distance between sensor nodes. However, in real localization systems, the RSS is strongly affected by many surrounding factors and tends to be unstable, so that it degrades accuracy in distance measurement. In this paper, we propose the angle-referred calibration based RSS method where angle relation between sensor nodes is used to perform the calibration for better performance in distance measurement. As a result, the proposed scheme shows that it can provide high precision.

Key Words: wireless sensor networks, angle-referred calibration, received signal strength, lateration

Manuscript received May 7, 2008. Manuscript revised July 22, 2008.


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