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      VLC-Based Positioning System for an Indoor Environment Using an Image Sensor and an Accelerometer Sensor

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          Abstract

          Recently, it is believed that lighting and communication technologies are being replaced by high power LEDs, which are core parts of the visible light communication (VLC) system. In this paper, by taking advantages of VLC, we propose a novel design for an indoor positioning system using LEDs, an image sensor (IS) and an accelerometer sensor (AS) from mobile devices. The proposed algorithm, which provides a high precision indoor position, consists of four LEDs mounted on the ceiling transmitting their own three-dimensional (3D) world coordinates and an IS at an unknown position receiving and demodulating the signals. Based on the 3D world coordinates and the 2D image coordinate of LEDs, the position of the mobile device is determined. Compared to existing algorithms, the proposed algorithm only requires one IS. In addition, by using an AS, the mobile device is allowed to have arbitrary orientation. Last but not least, a mechanism for reducing the image sensor noise is proposed to further improve the accuracy of the positioning algorithm. A simulation is conducted to verify the performance of the proposed algorithm.

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          Location systems for ubiquitous computing

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            An in-Depth Survey of Visible Light Communication Based Positioning Systems

            While visible light communication (VLC) has become the candidate for the wireless technology of the 21st century due to its inherent advantages, VLC based positioning also has a great chance of becoming the standard approach to positioning. Within the last few years, many studies on VLC based positioning have been published, but there are not many survey works in this field. In this paper, an in-depth survey of VLC based positioning systems is provided. More than 100 papers ranging from pioneering papers to the state-of-the-art in the field were collected and classified based on the positioning algorithms, the types of receivers, and the multiplexing techniques. In addition, current issues and research trends in VLC based positioning are discussed.
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              An Indoor Visible Light Communication Positioning System Using a RF Carrier Allocation Technique

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                Author and article information

                Contributors
                Role: Academic Editor
                Role: Academic Editor
                Role: Academic Editor
                Role: Academic Editor
                Journal
                Sensors (Basel)
                Sensors (Basel)
                sensors
                Sensors (Basel, Switzerland)
                MDPI
                1424-8220
                28 May 2016
                June 2016
                : 16
                : 6
                : 783
                Affiliations
                School of Electrical Engineering, Soongsil University, Dongjak Gu, Seoul 06978, Korea; phathuynh@ 123456ssu.ac.kr
                Author notes
                [* ]Correspondence: myoo@ 123456ssu.ac.kr ; Tel.: +82-2-820-0717
                Article
                sensors-16-00783
                10.3390/s16060783
                4934209
                27240383
                e5e3e1a1-5764-4cfd-8553-3df20bc6b77f
                © 2016 by the authors; licensee MDPI, Basel, Switzerland.

                This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license ( http://creativecommons.org/licenses/by/4.0/).

                History
                : 29 February 2016
                : 26 May 2016
                Categories
                Article

                Biomedical engineering
                indoor positioning,visible light communication,led,image sensor,accelerometer sensor,photodiode (pd)

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