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http://dx.doi.org/10.3837/tiis.2019.01.016

Surface Centroid TOA Location Algorithm for VLC System  

Zhang, Yuexia (Beijing Information Science & Technology University Information and communication engineering institute)
Chen, Hang (Beijing Information Science & Technology University Information and communication engineering institute)
Chen, Shuang (Beijing Information Science & Technology University Information and communication engineering institute)
Jin, Jiacheng (Beijing Information Science & Technology University Information and communication engineering institute)
Publication Information
KSII Transactions on Internet and Information Systems (TIIS) / v.13, no.1, 2019 , pp. 277-290 More about this Journal
Abstract
The demand for indoor positioning is increasing day by day. However, the widely used positioning methods today cannot satisfy the requirements of the indoor environment in terms of the positioning accuracy and deployment cost. In the existing research domain, the localization algorithm based on three-dimensional space is less accurate, and its robustness is not high. Visible light communication technology (VLC) combines lighting and positioning to reduce the cost of equipment deployment and improve the positioning accuracy. Further, it has become a popular research topic for telecommunication and positioning in the indoor environment. This paper proposes a surface centroid TOA localization algorithm based on the VLC system. The algorithm uses the multiple solutions estimated by the trilateration method to form the intersecting planes of the spheres. Then, it centers the centroid of the surface area as the position of the unknown node. Simulation results show that compared with the traditional TOA positioning algorithm, the average positioning error of the surface centroid TOA algorithm is reduced by 0.3243 cm and the positioning accuracy is improved by 45%. Therefore, the proposed algorithm has better positioning accuracy than the traditional TOA positioning algorithm, and has certain application value.
Keywords
TOA algorithm; centroid of surface; visible light communication; indoor location; three-dimensional space;
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