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http://hdl.handle.net/10397/106967
Title: | Accuracy analysis and improvement of visible light positioning based on VLC system using orthogonal frequency division multiple access | Authors: | Xu, Y Wang, Z Liu, P Chen, J Han, S Yu, C Yu, J |
Issue Date: | 25-Dec-2017 | Source: | Optics express, 25 Dec. 2017, v. 25, no. 26, p. 32618-32630 | Abstract: | In this paper, we proposed a system that realized simultaneously visible light positioning (VLP) and visible light communications (VLC) in the same band by using orthogonal frequency division multiple access (OFDMA). This system used the power of data sequence as the metric to estimate the transmission distances and consequently the receiver’s position, without deteriorating the VLC’s throughput. We theoretically analyzed the positioning errors in both overdetermined and determined VLP systems. In overdetermined VLP system, optimal selection of master light-emitting diode (LED) avoided the fluctuation of positioning error. Excluding the LED with longest transmission distance changed the overdetermined VLP system to determined VLP system, and reduced the positioning error. The power allocation scheme reduced further the positioning error in determined VLP system. This method was fast and e ective. The well-matched theoretical and Monte-Carlo (MC) simulation results validated our proposed VLP based on VLC system using OFDMA. | Publisher: | Optica Publishing Group | Journal: | Optics express | EISSN: | 1094-4087 | DOI: | 10.1364/OE.25.032618 | Rights: | © 2017 Optical Society of America under the terms of the OSA Open Access Publishing Agreement (https://opg.optica.org/library/license_v1.cfm) © 2017 Optical Society of America. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved. The following publication Yitong Xu, Zixiong Wang, Peixi Liu, Jian Chen, Shiying Han, Changyuan Yu, and Jinlong Yu, "Accuracy analysis and improvement of visible light positioning based on VLC system using orthogonal frequency division multiple access," Opt. Express 25, 32618-32630 (2017) is available at https://doi.org/10.1364/OE.25.032618. |
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