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Channel fluctuation measurement for image sensor based I2V-VLC, V2I-VLC, and V2V-VLC
2014 IEEE Asia Pacific Conference on Circuits and Systems (APCCAS), 2014In image sensor based VLC, transmitter acquisition and tracking are critical issue. However, the fluctuation of the VLC transmitter in the image plane caused by vehicle movement, complicates correct data reception. Therefore, in this paper, we present results of channel fluctuation measurements for infrastructure-to-vehicle VLC (I2V-VLC), vehicle-to ...
Masayuki Kinoshita +6 more
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Motion modeling of mobile transmitter for image sensor based I2V-VLC, V2I-VLC, and V2V-VLC
2014 IEEE Globecom Workshops (GC Wkshps), 2014Visible light communication (VLC) using light-emitting diodes (LEDs) is drawing much attention. There are two types of VLC reception devices, a photodiode and an image sensor. VLC using image sensor is called image sensor based VLC. As the receiver only uses the image sensor pixels that sense LED transmission sources and discards other pixels ...
Masayuki Kinoshita +6 more
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Opportunistic Hybrid VLC-IMU Positioning
2020 12th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP), 2020IMU systems can provide positioning without requiring deployed infrastructure. Nonetheless, they suffer from large cumulative errors. On the other hand, visible light communications (VLC) systems can deliver highly accurate positioning as long as communication coverage is assured, which does not always happens in indoor environments.
Carreno, Cristobal +5 more
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Performance Analysis of DF Based mixed VLC-FSO-VLC System
2020 International Conference on Signal Processing and Communications (SPCOM), 2020In this paper the performance of decode-and-forward (DF) based mixed visible light communication-free space optical communication-visible light communication (VLC-FSO-VLC) co-operative system is presented. In the proposed system, the FSO link is used for providing the outdoor connectivity and VLC environment is used for indoor connectivity.
Rima Deka, Sanya Anees
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VLC-IR Dual Switching Transmission System for VLC Sensor Networks
2020 International Conference on Electronics, Information, and Communication (ICEIC), 2020In this paper, we study the dual transmission technique which uses visible light communication and IR in visible light communication IoT system. Conventional visible light communication has a problem that the communication is disconnected when visible light does not reach directly or when a shadow region occurs due to an obstacle.
Doohee Han, Kyujin Lee
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Performance Analysis of DF Based Cascaded VLC-FSO-VLC System
2020 3rd International Conference on Advanced Communication Technologies and Networking (CommNet), 2020This paper investigates the performance of decode-and-forward (DF) based cascaded visible light communication-free space optical communication-visible light communication (VLC-FSO-VLC) co-operative system. In the proposed system, the outdoor connectivity is provided by an FSO link and indoor connectivity is provided through VLC environment.
Rima Deka, Sanya Anees
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Antimicrobial Properties of VLC Liners
Journal of Esthetic and Restorative Dentistry, 1990The antimicrobial activity of several visible light cured glass ionomer and liner materials against three bacteria commonly found in the oral cavity is discussed. Vitrabond light cure glass ionomer produced zones of inhibition against all the bacteria tested in this study.
W, Scherer +3 more
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2019 21st International Conference on Transparent Optical Networks (ICTON), 2019
The achievable data rate in indoor wireless systems that employ visible light communication (VLC) can be limited by multipath propagation. Here, we use computer generated holograms (CGHs) in VLC system design to improve the achievable system data rate. The CGHs are utilized to produce a fixed broad beam from the light source, selecting the light source
Younus, Safwan Hafeedh +4 more
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The achievable data rate in indoor wireless systems that employ visible light communication (VLC) can be limited by multipath propagation. Here, we use computer generated holograms (CGHs) in VLC system design to improve the achievable system data rate. The CGHs are utilized to produce a fixed broad beam from the light source, selecting the light source
Younus, Safwan Hafeedh +4 more
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Proceedings of the 16th International Workshop on Mobile Computing Systems and Applications, 2015
The ubiquity of the lighting infrastructure makes the visible light communication (VLC) well suited for mobile and Internet of Things (IoT) applications in the indoor environment. However, existing VLC systems have primarily been focused on one-way communications from the illumination infrastructure to the mobile device.
Jiangtao Li +5 more
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The ubiquity of the lighting infrastructure makes the visible light communication (VLC) well suited for mobile and Internet of Things (IoT) applications in the indoor environment. However, existing VLC systems have primarily been focused on one-way communications from the illumination infrastructure to the mobile device.
Jiangtao Li +5 more
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Catadioptric interfaces for designing VLC antennae
Applied Optics, 2017This paper presents a model to design bi-aspherical catadioptric lenses with limited image diffraction. A first refractive Cartesian oval surface that does not introduce any spherical aberration is used. When total internal reflection occurs, this surface can also be simultaneously used as a mirror. The reflective characteristics of Cartesian ovals are
Juan Camilo Valencia-Estrada +3 more
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