Presentation 2008-07-18
Distributed Localization with Unknown Attenuation Coefficient in Wireless Sensor Networks
Yusuke NISHI, Tomoaki OHTSUKI,
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Abstract(in English) Recently, a localization attracts much attention in sensor networks. One of major localization algorithms uses Received Signal Strength Indicator (RSSI). This algorithm needs some prior knowledge of an environment and thus requires prior experiments. To avoid troublesome prior measurements, this report proposes a decentralized localization algorithm with unknown attenuation coefficient. The proposed algorithm has no need to measure radio propagation characteristics, because the algorithm estimates attenuation coefficient besides a source location and a signal energy at unit-distance away from the source. The proposed algorithm has three calculation methods, because they estimate three unknown parameters. We evaluate computational complexities and localization accuracies of the proposed calculation methods. Finally, we show location estimation accuracies of the proposed algorithm by results of computer simulation and experiment.
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Keyword(in English) Sensor Networks / Localization / Distributed / Received Signal Energy / RSSI / Attenuation Coefficient
Paper # USN2008-35
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Conference Date 2008/7/10(1days)
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Registration To Ubiquitous and Sensor Networks(USN)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Distributed Localization with Unknown Attenuation Coefficient in Wireless Sensor Networks
Sub Title (in English)
Keyword(1) Sensor Networks
Keyword(2) Localization
Keyword(3) Distributed
Keyword(4) Received Signal Energy
Keyword(5) RSSI
Keyword(6) Attenuation Coefficient
1st Author's Name Yusuke NISHI
1st Author's Affiliation Graduate School of Fundamental Sience and Technology, Keio University()
2nd Author's Name Tomoaki OHTSUKI
2nd Author's Affiliation Faculty of Science and Technology, Keio University
Date 2008-07-18
Paper # USN2008-35
Volume (vol) vol.108
Number (no) 138
Page pp.pp.-
#Pages 5
Date of Issue