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A Cluster-Based MDS Scheme for Range-Free Localization in Wireless Sensor Networks

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3 Author(s)
Minhan Shon ; Sch. of Inf. & Commun. Eng., Sungkyunkwan Univ., Suwon, South Korea ; Wook Choi ; Hyunseung Choo

A wide range of applications used on wireless sensor networks requires the location information of sensor nodes. Some conventional localization techniques employ GPS or other location-tracking devices installed on sensor nodes. On the other hand, other methods provide location information by taking into account node connectivity only. One example of such methods is a multidimensional scaling-MAP (MDS-MAP), which provides the most accurate location information to date. MDS-MAP, however, has a computational overhead of O(n3) in a network of n nodes and also it intrinsically generates significant localization accuracy error in an environment with holes. This paper proposes a cluster-based MDS scheme for range-free localization, CMDS for short, which addresses the shortcomings of MDS-MAP and yields higher accuracy in all environments. Simulation results demonstrate that in a sensor network environment with holes, the proposed scheme gives up to 23% improvement in localization accuracy over hierarchical MDS (HMDS), which is an enhanced version of the conventional MDS-MAP.

Published in:

Cyber-Enabled Distributed Computing and Knowledge Discovery (CyberC), 2010 International Conference on

Date of Conference:

10-12 Oct. 2010

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