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Optical OFDM for Visible Light Communications and Visible Light Positioning
2019This thesis addresses key aspects of practical visible light communication (VLC) systems. The research can be divided into three main topics. First, the limited data rate of current VLC systems is addressed in two ways. A performance analysis of the most important VLC modulation formats has been described and a new receiver for one of these schemes has
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Indoor Positioning System Using Visible Light and Accelerometer
Journal of Lightwave Technology, 2014Indoor positioning system is a critical part in location-based services. Highly precise positioning systems can support different mobile applications in future wireless systems. Positioning systems using existing wireless networks have low deployment costs, but the position error can be up to several meters. While there are positioning systems proposed
Muhammad Yasir +2 more
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Visible light positioning and communication cooperative systems
2017 16th International Conference on Optical Communications and Networks (ICOCN), 2017A cooperative system for visible light positioning (VLP) and visible light communication (VLC) is proposed based on the spread-spectrum plugin of optical identification (OPID). By keeping the existing VLC frame structure untouched, two different implementation schemes were designed by adding the location information field into the communication ...
Jian Chen, Xiaodi You
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Optimizing Visible Light Illumination and Positioning
2020The fast electrical switching of electrical signals in an LED illumination bulb allows it to be used for both Visible Light Communication (VLC) and Visible Light Positioning (VLP). An indoor simple, fast, geometric positioning system called the Binary Search Algorithm which uses RSSI trilateration is introduced. It is robust against noise. When dealing
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Visible Light indoor positioning through colored LEDs
2017 IEEE International Conference on Communications Workshops (ICC Workshops), 2017The need to manage connectivity, when Internet access is granted indoor via Visible Light Communications, leads to acquire information about user position. This is useful for accessing the medium via space division multiplexing and/or giving rise to handover procedure or, more, providing access to location based contents, as for example, in large ...
PERGOLONI, STEFANO +4 more
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Indoor Positioning Based on Visible Light Communication
ACM Computing Surveys, 2019The emergent context-aware applications in ubiquitous computing demands for obtaining accurate location information of humans or objects in real-time. Indoor location-based services can be delivered through implementing different types of technology, among which is a recent approach that utilizes LED lighting as a medium for Visible Light Communication
Milad Afzalan, Farrokh Jazizadeh
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Visible Light Positioning Considering Multi-Path Reflections
2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring), 2019In this paper, a novel visible light positioning (VLP) system is proposed. The new system includes multiple dual-mode light-emitting diode (DM-LED) lamps with different radiation lobe mode numbers (RLMN) and a user device equipped with a photodiode (PD). Specifically, a method utilizing a radiation angle measurement (RAM) approach for DM-LED is devised,
Zhengpeng Li, Lei Zhao, Ming Jiang
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Indoor positioning with OFDM Visible Light Communications
2016 13th IEEE Annual Consumer Communications & Networking Conference (CCNC), 2016Visible Light Communication (VLC) technology using light emitting diodes (LEDs) has been gaining increasing attention in recent years as it is appealing for a wide range of applications such as indoor positioning. Orthogonal frequency division multiplexing (OFDM) has been applied to indoor wireless optical communications in order to mitigate the effect
Mohammadreza Aminikashani +2 more
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ALS-P: Light Weight Visible Light Positioning via Ambient Light Sensor
IEEE INFOCOM 2019 - IEEE Conference on Computer Communications, 2019Visible light positioning (VLP) is a promising direction for indoor localization. VLP depends on Visible light communication (VLC) to receive location anchors sent by light bulbs. In order to decode high-frequency VLC signals, today’s VLP systems require the receiver to equip either rolling shutter cameras or high-frequency light sensors, which bring ...
Zeyu Wang +4 more
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Test platform for visible light positioning
2020Mestrado em Engenharia Eletrónica e ...
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