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http://dx.doi.org/10.6109/jkiice.2012.16.8.1789

IEEE 802.15.4a based Localization Algorithm for Location Accuracy Enhancement in the NLOS Environment  

Cha, Jae-Young (건국대학교)
Kong, Young-Bae (한국원자력연구소)
Choi, Jeung-Won (국방과학연구소)
Ko, Jong-Hwan (국방과학연구소)
Kwon, Young-Goo (건국대학교)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.16, no.8, 2012 , pp. 1789-1798 More about this Journal
Abstract
IEEE 802.15.4a standard can provide a variety of location-based services for ZigBee or wireless network applications by adapting the time-of-arrival (TOA) ranging technique. The non-line-of-sight (NLOS) condition is the critical problem in the IEEE 802.15.4a networks, and it can significantly degrade the performance of the TOA-based localization. To enhance the location accuracy due to the NLOS problem, this paper proposes an energy-efficient low complexity localization algorithm. The proposed approach performs the ranging with the multicast method, which can reduce the message overhead due to packet exchanges. By limiting the search region for the location of the node, the proposed approach can enhance the location accuracy. Experimental results show that the proposed algorithm outperforms previous algorithms in terms of the energy consumption and the localization accuracy.
Keywords
IEEE 802.15.4a; NLOS environment; localization; TOA ranging;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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