VANET 2.0: Integrating Visible Light with Radio Frequency Communications for Safety Applications

2016 ◽  
pp. 105-116 ◽  
Author(s):  
Yao Ji ◽  
Peng Yue ◽  
Zongmin Cui
Keyword(s):  
Visible Light ◽  
Radio Frequency ◽  
Safety Applications

scholarly journals Efficient Exploitation of Radio Frequency and Visible Light Communication Bands for D2D in Mobile Networks

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 168922-168933 ◽  
Author(s):  
Mehyar Najla ◽  
Pavel Mach ◽  
Zdenek Becvar ◽  
Petr Chvojka ◽  
Stanislav Zvanovec
Keyword(s):  
Visible Light ◽  
Radio Frequency ◽  
Mobile Networks ◽  
Visible Light Communication

scholarly journals Functionalization of eggshell membranes with CuO–ZnO based p–n junctions for visible light induced antibacterial activity against Escherichia coli

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Nicoleta Preda ◽  
Andreea Costas ◽  
Mihaela Beregoi ◽  
Nicoleta Apostol ◽  
Andrei Kuncser ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Antibacterial Activity ◽  
Magnetron Sputtering ◽  
Visible Light ◽  
Radio Frequency ◽  
Metal Oxides ◽  
Inorganic Compounds ◽  
Radio Frequency Magnetron ◽  
Eggshell Membrane ◽  
Radio Frequency Magnetron Sputtering

AbstractBiopolymers provide versatile platforms for designing naturally-derived wound care dressings through eco-friendly pathways. Eggshell membrane (ESM), a widely available, biocompatible biopolymer based structure features a unique 3D porous interwoven fibrous protein network. The ESM was functionalized with inorganic compounds (Ag, ZnO, CuO used either separately or combined) using a straightforward deposition technique namely radio frequency magnetron sputtering. The functionalized ESMs were characterized from morphological, structural, compositional, surface chemistry, optical, cytotoxicity and antibacterial point of view. It was emphasized that functionalization with a combination of metal oxides and exposure to visible light results in a highly efficient antibacterial activity against Escherichia coli when compared to the activity of individual metal oxide components. It is assumed that this is possible due to the fact that an axial p–n junction is created by joining the two metal oxides. This structure separates into components the charge carrier pairs promoted by visible light irradiation that further can influence the generation of reactive oxygen species which ultimately are responsible for the bactericide effect. This study proves that, by employing inexpensive and environmentally friendly materials (ESM and metal oxides) and fabrication techniques (radio frequency magnetron sputtering), affordable antibacterial materials can be developed for potential applications in chronic wound healing device area.

Mobility management for D2D communication combining radio frequency and visible light communications bands

2020 ◽  
Vol 26 (7) ◽  
pp. 5473-5484
Author(s):  
Zdenek Becvar ◽  
Ray-Guang Cheng ◽  
Martin Charvat ◽  
Pavel Mach
Keyword(s):  
Visible Light ◽  
Radio Frequency ◽  
Mobility Management ◽  
D2d Communication ◽  
Visible Light Communications

scholarly journals High-speed visible light communication systems based on Si-substrate LEDs with multiple superlattice interlayers

PhotoniX ◽  
2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Fangchen Hu ◽  
Shouqing Chen ◽  
Yuyi Zhang ◽  
Guoqiang Li ◽  
Peng Zou ◽  
...  
Keyword(s):  
Visible Light ◽  
Radio Frequency ◽  
Communication Systems ◽  
High Speed ◽  
Visible Light Communication ◽  
Data Rate ◽  
Si Substrate ◽  
Theoretical Derivation ◽  
Wall Plug Efficiency ◽  
The Impact

AbstractHigh-speed visible light communication (VLC), as a cutting-edge supplementary solution in 6G to traditional radio-frequency communication, is expected to address the tension between continuously increased demand of capacity and currently limited supply of radio-frequency spectrum resource. The main driver behind the high-speed VLC is the presence of light emitting diode (LED) which not only offers energy-efficient lighting, but also provides a cost-efficient alternative to the VLC transmitter with superior modulation potential. Particularly, the InGaN/GaN LED grown on Si substrate is a promising VLC transmitter to simultaneously realize effective communication and illumination by virtue of beyond 10-Gbps communication capacity and Watt-level output optical power. In previous parameter optimization of Si-substrate LED, the superlattice interlayer (SL), especially its period number, is reported to be the key factor to improve the lighting performance by enhancing the wall-plug efficiency, but few efforts were made to investigate the influence of SLs on VLC performance. Therefore, to optimize the VLC performance of Si-substrate LEDs, we for the first time investigated the impact of the SL period number on VLC system through experiments and theoretical derivation. The results show that more SL period number is related to higher signal-to-noise ratio (SNR) via improving the wall-plug efficiency. In addition, by using Levin-Campello bit and power loading technology, we achieved a record-breaking data rate of 3.37 Gbps over 1.2-m free-space VLC link under given optimal SL period number, which, to the best of our knowledge, is the highest data rate for a Si-substrate LED-based VLC system.

scholarly journals PERANCANGAN DAN ANALISIS PENGIRIMAN DATA DIGITAL BERBASIS VLC DENGAN LED DAN PHOTOTRANSISTOR ARRAY

2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Retno Renggani Nugroho
Keyword(s):  
Low Power ◽  
Visible Light ◽  
Radio Frequency ◽  
Communication System ◽  
Digital Data ◽  
Switching Speed ◽  
Information Carrier ◽  
Led Array ◽  
High Switching Speed

AbstractVisible Light Communication (VLC) is a communication system using visible light as information carrier. The development of VLC is based on the some banning of radio frequency usage and the increasing use of LEDs. LED consumes low power and has high switching speed, which suitable for transmitting data. This study designed VLC prototype with LED array and phototransistor array that sends digital data of text in various sizes. Test is done by combination of different distance and bitrate. As results, this prototype can send and receive data at distance 1-100 cm and speed 2400, 4800, and 9600 bps. Keywords: VLC, LED, Phototransistor, Array. AbstrakVisible Light Communication (VLC) adalah sistem komunikasi yang menggunakan cahaya tampak sebagai pembawa informasinya. Perkembangan VLC didasarkan atas pelarangan penggunaan frekuensi radio di beberapa tempat serta meningkatnya penggunaan LED. Kelebihan LED yaitu mengkonsumsumsi daya rendah serta memiliki kecepatan switching yang tinggi sehingga cocok untuk mentransmisikan data. Pada penelitian ini dirancang prototipe VLC dengan LED array dan phototransistor array. Prototipe ini mengirimkan data digital berupa teks dalam berbagai ukuran. Pengujian dilakukan dengan kombinasi jarak dan bitrate yang berbeda-beda. Prototipe dapat mengirim dan menerima data pada jarak 1-100 cm kecepatan 2400, 4800, dan 9600 bps. Kata kunci: VLC, LED, Phototransistor, Array.

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