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Artykuły w czasopismach na temat „Visible light wireless communications”

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Data publikacji: 6 września 2023

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1

Almadani, Yousef, David Plets, Sander Bastiaens, et al. "Visible Light Communications for Industrial Applications—Challenges and Potentials." Electronics 9, no. 12 (2020): 2157. http://dx.doi.org/10.3390/electronics9122157.

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Visible Light Communication (VLC) is a short-range optical wireless communication technology that has been gaining attention due to its potential to offload heavy data traffic from the congested radio wireless spectrum. At the same time, wireless communications are becoming crucial to smart manufacturing within the scope of Industry 4.0. Industry 4.0 is a developing trend of high-speed data exchange in automation for manufacturing technologies and is referred to as the fourth industrial revolution. This trend requires fast, reliable, low-latency, and cost-effective data transmissions with fast

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Manousiadis, Pavlos P., Kou Yoshida, Graham A. Turnbull, and Ifor D. W. Samuel. "Organic semiconductors for visible light communications." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 378, no. 2169 (2020): 20190186. http://dx.doi.org/10.1098/rsta.2019.0186.

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Organic semiconductors are an important class of optoelectronic material that are widely studied because of the scope for tuning their properties by tuning their chemical structure, and simple fabrication to make flexible films and devices. Although most effort has focused on developing displays and lighting from these materials, their distinctive properties also make them of interest for visible light communications (VLCs). This article explains how their properties make them suitable for VLC and reviews the main uses that have been explored. On the transmitter side, record white VLC communic

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Lee, Daechun, Kyungmook Choi, Ki-Doo Kim, and Youngil Park. "Visible light wireless communications based on predistorted OFDM." Optics Communications 285, no. 7 (2012): 1767–70. http://dx.doi.org/10.1016/j.optcom.2011.12.048.

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Miramirkhani, Farshad, and Murat Uysal. "Channel modelling for indoor visible light communications." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 378, no. 2169 (2020): 20190187. http://dx.doi.org/10.1098/rsta.2019.0187.

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Visible light communication (VLC) allows the dual use of light-emitting diodes (LEDs) for wireless communication purposes in addition to their primary purpose of illumination. As in any other communication system, realistic channel modelling is a key for VLC system design, analysis and testing. In this paper, we present a comprehensive survey of indoor VLC channel models. In order to set the background, we start with an overview of infrared (IR) channel modelling, which has received much attention in the past, and highlight the differences between visible and IR optical bands. In the light of

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Kinny, Tyran, Franklin Puthuva, Ashore Komban, and Dipti Belekar. "DATA COMMUNICATION USING VISIBLE LIGHT." International Journal of Students' Research in Technology & Management 3, no. 5 (2015): 358–62. http://dx.doi.org/10.18510/ijsrtm.2015.354.

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Visible Light Communication (VLC) using a Light Fidelity system, as proposed by a German physicist—Harald Haas, provides transmission of data through illumination by sending data through an LED light source that varies in intensity that can be controlled and adjusted such that it appears as normal light to the naked human eye. Here the property of persistence of vision of the human eye is exploited for additional application of a free, sustainable and green source that can be used for wireless communication at very fast data rates. This paper focuses on developing a low cost Li-Fi based system

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Ahmed, Iqrar, Heikki Karvonen, Timo Kumpuniemi, and Marcos Katz. "Wireless Communications for the Hospital of the Future: Requirements, Challenges and Solutions." International Journal of Wireless Information Networks 27, no. 1 (2019): 4–17. http://dx.doi.org/10.1007/s10776-019-00468-1.

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Abstract In this conceptual paper, we discuss the concept of hospital of the future (HoF) and the requirements for its wireless connectivity. The HoF will be mostly wireless, connecting patients, healthcare professionals, sensors, computers and medical devices. Spaces of the HoF are first characterized in terms of communicational performance requirements. In order to fulfil the stringent requirements of future healthcare scenarios, such as enhanced performance, security, safety, privacy, and spectrum usage, we propose a flexible hybrid optical-radio wireless network to provide efficient, high-

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Yu, Tai-Cheng, Wei-Ta Huang, Wei-Bin Lee, Chi-Wai Chow, Shu-Wei Chang, and Hao-Chung Kuo. "Visible Light Communication System Technology Review: Devices, Architectures, and Applications." Crystals 11, no. 9 (2021): 1098. http://dx.doi.org/10.3390/cryst11091098.

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Visible light communication (VLC) is an advanced, highly developed optical wireless communication (OWC) technology that can simultaneously provide lighting and high-speed wireless data transmission. A VLC system has several key advantages: ultra-high data rate, secure communication channels, and a lack of interference from electromagnetic (EM) waves, which enable a wide range of applications. Light-emitting diodes (LEDs) have been considered the optimal choice for VLC systems since they can provide excellent illumination performance. However, the quantum confinement Stark effect (QCSE), crysta

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Chaabawi, N. J. AL, H. Al Furiji, A. Dahir Alramadan, and M. AL Shakban. "Text Transmission Using Visible Light Communication." International Journal of Electrical and Electronics Research 10, no. 3 (2022): 627–31. http://dx.doi.org/10.37391/ijeer.100335.

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Recently, WiFi wireless technology was used to send data by using radio signals, this paper will focus on LiFi technology which is an optical wireless networking technology that uses LEDs for the transmission of data using light-emitting diodes. LiFi production models were capable to transmit 150 megabits per second (Mbps). Visible light communication (VLC) is a facile method to overcome the spectrum crisis of radiofrequency. Light Fidelity (Li-Fi) is the wireless data transfer using LED. In this study LEDs have been used to transfer text between two computers using a processing software metho

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Raj, Hritik, Charu Mitra, Gauri Shankar, Chandan Kumar, and Harsh Raj. "Lifi wireless communication." International Journal of Innovative Research in Physics 2, no. 2 (2021): 15–18. http://dx.doi.org/10.15864/ijiip.2203.

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Li-Fi stands for Light-fidelity. The technology was very new and proposed by the German Physicist Harald Hass in 2011. Li-Fi basically aims to replace Wi-Fi by using light to transmit internet signals. It works on the principle of visible light communication I.e .use of visible light for communication. Though Li-Fi is a system that is capable of transmitting data at high speeds over the visible light, ultraviolet and infrared spectrum but in its present state only LED lambs can be used. It consists of a light bulb which is used as an emitter and a photo diode as a receiver. Li-Fi provides tran

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Zadobrischi, Eduard. "The Concept regarding Vehicular Communications Based on Visible Light Communication and the IoT." Electronics 12, no. 6 (2023): 1359. http://dx.doi.org/10.3390/electronics12061359.

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The most controversial technology—visible light communication—is becoming increasingly promising in the field of wireless networks, being ideal for many indoor and outdoor applications. This article proposes VLC methods and architectures capable of providing high security in vehicles and in their communications with the environment or other cars in traffic. The architectures proposed involve the inclusion of ambient lighting equipment and systems and indoor and outdoor lighting systems, such as headlights, traffic lights, and stoplights. Securing data within vehicular networks and validating t

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Shrestha, Surendra. "Hadamard Coded Modulation for Visible Light Communication." Journal of Nepal Physical Society 4, no. 1 (2017): 96. http://dx.doi.org/10.3126/jnphyssoc.v4i1.17342.

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<p class="Default">In the recent days, Visible Light Communication (VLC), a novel technology that enables standard Light-Emitting-Diodes (LEDs) to transmit data, is gaining significant attention. However, to date, there is very little research on its deployment. The enormous and growing user demand for wireless data is placing huge pressure on existing Wi-Fi technology, which uses the radio and microwave frequency spectrum. Also the radio and microwave frequency spectrum is heavily used and overcrowded. On the other hand, visible light spectrum has huge, unused and unregulated capacity f

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Oh, Seoyeon, Minseok Yu, Seonghyeon Cho, Song Noh, and Hyunchae Chun. "Bi-LSTM-Augmented Deep Neural Network for Multi-Gbps VCSEL-Based Visible Light Communication Link." Sensors 22, no. 11 (2022): 4145. http://dx.doi.org/10.3390/s22114145.

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With the remarkable advances in vertical-cavity surface-emitting lasers (VCSELs) in recent decades, VCSELs have been considered promising light sources in the field of optical wireless communications. However, off-the-shelf VCSELs still have a limited modulation bandwidth to meet the multi-Gb/s data rate requirements imposed on the next-generation wireless communication system. Recently, employing machine learning (ML) techniques as a method to tackle such issues has been intriguing for researchers in wireless communication. In this work, through a systematic analysis, it is shown that the ML

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., Liju Sajan. "WIRELESS DATA TRANSFER USING VISIBLE LIGHT COMMUNICATION." International Journal of Research in Engineering and Technology 04, no. 15 (2015): 52–55. http://dx.doi.org/10.15623/ijret.2015.0415014.

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Mapunda, Galefang Allycan, Reuben Ramogomana, Leatile Marata, Bokamoso Basutli, Amjad Saeed Khan, and Joseph Monamati Chuma. "Indoor Visible Light Communication: A Tutorial and Survey." Wireless Communications and Mobile Computing 2020 (December 10, 2020): 1–46. http://dx.doi.org/10.1155/2020/8881305.

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With the advancement of solid-state devices for lighting, illumination is on the verge of being completely restructured. This revolution comes with numerous advantages and viable opportunities that can transform the world of wireless communications for the better. Solid-state LEDs are rapidly replacing the contemporary incandescent and fluorescent lamps. In addition to their high energy efficiency, LEDs are desirable for their low heat generation, long lifespan, and their capability to switch on and off at an extremely high rate. The ability of switching between different levels of luminous in

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Sejan, Mohammad Abrar Shakil, Md Habibur Rahman, Md Abdul Aziz, Dong-Sun Kim, Young-Hwan You, and Hyoung-Kyu Song. "A Comprehensive Survey on MIMO Visible Light Communication: Current Research, Machine Learning and Future Trends." Sensors 23, no. 2 (2023): 739. http://dx.doi.org/10.3390/s23020739.

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Visible light communication (VLC) has contributed new unused spectrum in addition to the traditional radio frequency communication and can play a significant role in wireless communication. The adaptation of VLC technology enhances wireless connectivity both in indoor and outdoor environments. Multiple-input multiple-output (MIMO) communication has been an efficient technique for increasing wireless communications system capacity and performance. With the advantages of MIMO techniques, VLC can achieve an additional degree of freedom. In this paper, we systematically perform a survey of the exi

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Udvary, Eszter. "Visible Light Communication Survey." Infocommunications journal, no. 2 (2019): 22–31. http://dx.doi.org/10.36244/icj.2019.2.3.

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Communication applying visible light technology is a novel approach. Visible Light Communication (VLC) development is motivated by the increasing demand for wireless communication technologies. It has the potential to provide highspeed data communication with good security and improved energy efficiency. The rapid evolution of VLC was sustained by the LEDs performances. The Light-Emitting-Diode (LED) luminaires are capable of switching to the different light intensity at a fast rate. This function can be used for data transmission. This article focuses on the physical layer of the VLC links. I

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Wu, Shaoen, Honggang Wang, and Chan-Hyun Youn. "Visible light communications for 5G wireless networking systems: from fixed to mobile communications." IEEE Network 28, no. 6 (2014): 41–45. http://dx.doi.org/10.1109/mnet.2014.6963803.

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Zvánovec, Stanislav, Zabih Ghassemlooy, Rafael Perez-Jimenez, and Luis Nero Alves. "Editorial to the Special Issue on “Visible Light Communications, Networking, and Sensing”." Sensors 21, no. 12 (2021): 4004. http://dx.doi.org/10.3390/s21124004.

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C. A. D, Pahalson, and Nanchen Nimyel Caleb. "5G Wireless Communications for Future Internet of Things: The Need for Free-Space Optical/Visible Light Communication Technology." International Journal of Computer Science and Mobile Computing 8, no. 12 (2019): 124–32. http://dx.doi.org/10.47760/ijcsmc.2019.v08i12.001.

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IoT networks have some important characteristics. Some key requirements of the IoT are low device cost, low deployment cost, high energy efficiency, high security and privacy, and support for a large number of devices. The LED-based OWC systems have all the great features required to support the IoT. The key technologies currently used for IoT connectivity are Zigbee, Bluetooth Low Energy (BLE), and WiFi. ZigBee is a low-cost, low-power, wireless mesh network standard that has been widely used for IoT applications. The Internet of Things (IoT) based on the tactile internet will also be an esse

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Beguni, Cătălin, Alin-Mihai Căilean, Sebastian-Andrei Avătămăniței, et al. "In-Vehicle Visible Light Communications Data Transmission System Using Optical Fiber Distributed Light: Implementation and Experimental Evaluation." Sensors 22, no. 18 (2022): 6738. http://dx.doi.org/10.3390/s22186738.

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Visible light communications emerges as a promising wireless communication technology that has been found suitable for numerous indoor and outdoor applications. In this article, a new in-vehicle VLC system is designed, implemented, and experimentally evaluated. The purpose of this new system is to provide car passengers with optical wireless communications. The proposed system consists of a VLC emitter integrated into the vehicle’s ambient lighting system and a mobile VLC receiver. Unlike any previous works, this article proposes a VLC emitter in which the light from a 3 W LED is distributed o

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Lin, Xin. "Wavelength-Adaptation Underwater Optical Wireless Sensor Network Using Visible Light Communications." Advances in Computer and Communication 1, no. 1 (2020): 7–15. http://dx.doi.org/10.26855/acc.2020.12.002.

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LIN, Xin. "Adaptive Control for LED-Based Underwater Wireless Communications Using Visible Light." IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E100.A, no. 1 (2017): 185–93. http://dx.doi.org/10.1587/transfun.e100.a.185.

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Leccese, Fabio, and Giuseppe Schirripa Spagnolo. "State-of-the art and perspectives of underwater optical wireless communications." ACTA IMEKO 10, no. 4 (2021): 25. http://dx.doi.org/10.21014/acta_imeko.v10i4.1097.

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In scientific, military, and industrial sectors, the development of robust and efficient submarine wireless communication links is of enormous interest. Underwater wireless communications can be carried out through acoustic, radio frequency (RF), and optical waves. Underwater optical communication is not a new idea, but it has recently been considered because seawater exhibits a window of reduced absorption both in the visible spectrum and long-wavelength UV light (UV-A). Compared to its bandwidth limited acoustic counterpart, underwater optical wireless communications (UOWCs) can support high

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Matsushima, Tomoko K., Shoichiro Yamasaki, Kyohei Ono, and Hirokazu Tanaka. "Visible-Light CDMA Communications Using Inverted Spread Sequences." Electronics 11, no. 12 (2022): 1823. http://dx.doi.org/10.3390/electronics11121823.

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Visible-light communication (VLC) using light-emitting diodes (LEDs) is gaining attention in the wireless communication field. LEDs can be used as data transmitters without losing their main functionality as lighting devices. In some VLC applications, such as traffic signs and road signals in intelligent transportation systems, high brightness is required to help people recognize the signs and signals conveyed by the light sources. In this paper, the use of inverted modified prime sequence codes (MPSCs) is shown to be efficient for increasing brightness in an optical code-division multiple acc

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Bao, Song Jian. "LED Visible Light Communication System Design and Performance Optimization Based on Ethernet." Applied Mechanics and Materials 336-338 (July 2013): 1920–24. http://dx.doi.org/10.4028/www.scientific.net/amm.336-338.1920.

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To satisfy the requirements of visible light wireless communication technology, designed LED visible light communication application system based on Ethernet. Influence factors of system performance were studied and took specific measures to optimize system performance. Reduced the influence of background light, improved the communication distance, inhibited LED light source tailing phenomenon, and improved the rate of the edge of the LED. The LED visible light communication technology blends into the Ethernet, provides a new solution for wireless broadband access, this solution has the broad

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Faruq, Omar, Kazi Rubaiyat Shahriar Rahman, Nusrat Jahan, Sakib Rokoni, and Mosa Rabeya. "Li-Fi technology-based long-range FSO data transmit system evaluation." Sustainable Engineering and Innovation 5, no. 1 (2023): 85–98. http://dx.doi.org/10.37868/sei.v5i1.id192.

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Visible light is used by a technology known as Light Fidelity to establish wireless internet connections very quickly. This article offers line-of-sight communication between the transmitter and receiver using LED technology. Li-Fi technology is a method that transmits data using LED light, which is faster and more efficient than Wi-Fi. Since it is practically ubiquitous, light can be used for communication as well. A cutting-edge technology called optical communication includes a subset called Li-Fi. By sending out visible light, the Li-Fi device enables wireless intranet communication. An in

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Kim, Sung-Man, and Seong-Min Kim. "Wireless visible light communication technology using optical beamforming." Optical Engineering 52, no. 10 (2013): 106101. http://dx.doi.org/10.1117/1.oe.52.10.106101.

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Riurean, S., M. Leba, A. Ionica, O. Stoicuta, and C. Buioca. "Visible light wireless data communication in industrial environments." IOP Conference Series: Materials Science and Engineering 572 (August 2, 2019): 012095. http://dx.doi.org/10.1088/1757-899x/572/1/012095.

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Gong, Chen. "Visible Light Communication and Positioning: Present and Future." Electronics 8, no. 7 (2019): 788. http://dx.doi.org/10.3390/electronics8070788.

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Riurean, Simona. "Design and Evaluation of Visible Light Wireless Data Communication Models." Journal of Digital Science 2, no. 2 (2020): 3–13. http://dx.doi.org/10.33847/2686-8296.2.2_1.

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The technologies based on the radio frequency used for wireless transmission indoor are more congested than ever these days, therefore several wireless communication alternatives are intensively searched. Some most promising technologies are based on the optical part of the electromagnetic spectrum. The benefits and drawbacks in optical wireless data communication models design are presented in this work. The key characteristics of the VLC systems are briefly discussed, as well. Some models developed for wireless data transfer in visible light communication and infrared are presented, and thei

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Bamiedakis, N., R. V. Penty, and I. H. White. "Carrierless amplitude and phase modulation in wireless visible light communication systems." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 378, no. 2169 (2020): 20190181. http://dx.doi.org/10.1098/rsta.2019.0181.

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Visible light communications (VLCs) have attracted considerable interest in recent years owing to the potential to simultaneously achieve data transmission and illumination using low-cost light-emitting diodes (LEDs). However, the high-speed capability of such links is typically limited by the low bandwidth of LEDs. As a result, spectrally efficient advanced modulation formats have been considered for use in VLC links in order to mitigate this issue and enable higher data rates. Carrierless amplitude and phase (CAP) modulation is one such spectrally efficient scheme that has attracted signific

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Li, Xiaoji, Leiming Sun, Jiemei Huang, and Fanze Zeng. "Channel Polarization Scheme for Ocean Turbulence Channels in Underwater Visible Light Communication." Journal of Marine Science and Engineering 11, no. 2 (2023): 341. http://dx.doi.org/10.3390/jmse11020341.

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Underwater wireless communication technology plays an important role in marine environment monitoring and ecological protection. Underwater optical wireless communications (UWOCs) can currently achieve a transmission distance of hundreds of meters, and the rate can reach hundreds of Mbps or even Gbps, with low power consumption and high-speed features. In addition, UWOC also has the advantages of a small transceiver size and strong anti-electromagnetic interference ability, which is especially suitable for scenarios where underwater volume and power consumption are relatively limited. However,

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He, Cuiwei, and Chen Chen. "A Review of Advanced Transceiver Technologies in Visible Light Communications." Photonics 10, no. 6 (2023): 648. http://dx.doi.org/10.3390/photonics10060648.

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Visible Light Communication (VLC) is an emerging technology that utilizes light-emitting diodes (LEDs) for both indoor illumination and wireless communications. It has the potential to enhance the existing WiFi network and connect a large number of high-speed internet users in future smart home environments. Over the past two decades, VLC techniques have made significant strides, resulting in transmission data rates increasing from just a few Mbps to several tens of Gbps. These achievements can be attributed to the development of various transceiver technologies. At the transmitter, LEDs shoul

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Leccese, Fabio, and Giuseppe Schirripa Spagnolo. "LED-to-LED wireless communication between divers." ACTA IMEKO 10, no. 4 (2021): 80. http://dx.doi.org/10.21014/acta_imeko.v10i4.1177.

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<p class="Abstract">For military divers, having a robust, secure, and undetectable wireless communication system available is a fundamental element. Wireless intercoms using acoustic waves are currently used. These systems, even if reliable, have the defect of being easily identifiable and detectable. Visible light can pass through sea water. Therefore, light can be used to develop short-range wireless communication systems. To realize secure close-range underwater wireless communication, the Underwater Optical Wireless Communication (UOWC) can be a valid alternative to acoustic wireless

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Abdalla, Iman, Michael B. Rahaim, and Thomas D. C. Little. "Interference in multi-user optical wireless communications systems." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 378, no. 2169 (2020): 20190190. http://dx.doi.org/10.1098/rsta.2019.0190.

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Visible light communications (VLC) (including LiFi) represent a subset of the broader field of optical wireless communications. Where narrow beams, typical of free space optical communications are largely free from interference. VLC encompasses use cases involving combined illumination and data access and supporting a wireless access point (AP) model. The use of many units provides scaling of spatial coverage for both lighting and data access. However, AP replication in close proximity creates many interference challenges that motivate the investigation embodied in this paper. In particular, w

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Zadobrischi, Eduard. "Analysis and Experiment of Wireless Optical Communications in Applications Dedicated to Mobile Devices with Applicability in the Field of Road and Pedestrian Safety." Sensors 22, no. 3 (2022): 1023. http://dx.doi.org/10.3390/s22031023.

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Current developments and the need for high-performance devices that provide safe and reliable communications present a future perspective by using visible light as an alternative solution that can substantially improve road and pedestrian safety. The daily use of smartphones is imperative; thus one can build on this premise a system dedicated to the aforementioned problem. However, the problem of the visible light communication channel (VLC) is highly dynamic and becomes extremely unpredictable in terms of exposure to noise sources. Developing applications dedicated to direct communications wi

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Jalil, Reyhane, Adnan Sabbar, Hassan Falah Fakhruldeen, and Feryal Ibrahim Jabbar. "Design and implementation of PC to PC data transmission using wireless visible light communication system." Indonesian Journal of Electrical Engineering and Computer Science 26, no. 3 (2022): 1423. http://dx.doi.org/10.11591/ijeecs.v26.i3.pp1423-1428.

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In this paper a laser-based <span>visible light communication system for PC to PC data transmission has been designed, simulated, and implemented. This type of communication uses light waves in the visible spectrum (380 nm to 750 nm) to deliver data. Visible light communication is any way of transmitting data using visible light. In order to avoid being detected by human eyes, this kind of communication sends information at a slower rate than human vision. Visible light communication is significantly more reliable and capable of high information transmission rates than existing wireless

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Loureiro, Pedro A., Fernando P. Guiomar, and Paulo P. Monteiro. "Visible Light Communications: A Survey on Recent High-Capacity Demonstrations and Digital Modulation Techniques." Photonics 10, no. 9 (2023): 993. http://dx.doi.org/10.3390/photonics10090993.

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In order to deal with the increasing number of mobile devices and with their demand for Internet services, particularly social media platforms, streaming video, and online gaming, Radio-Frequency (RF) wireless networks have been pushed to their capacity limits. In addition to this, 80% of the total data traffic is carried out by users inside buildings. Therefore, new technologies have started to be considered for indoor wireless communications. Visible Light Communications (VLC) can provide both illumination and communications, appearing as an alternative or complement to RF wireless networks.

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Azhar, Ahmad Helmi, Tuan-Anh Tran, and Dominic O'Brien. "A Gigabit/s Indoor Wireless Transmission Using MIMO-OFDM Visible-Light Communications." IEEE Photonics Technology Letters 25, no. 2 (2013): 171–74. http://dx.doi.org/10.1109/lpt.2012.2231857.

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Torres-Zapata, Edmundo, Victor Guerra, Jose Rabadan, Martin Luna-Rivera, and Rafael Perez-Jimenez. "MAC/PHY Comprehensive Visible Light Communication Networks Simulation." Sensors 20, no. 21 (2020): 6014. http://dx.doi.org/10.3390/s20216014.

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In this paper, the effect of channel conditions on the global behavior of a wireless Visible Light Communications (VLC) optical network are studied. It presents a system-level simulator that considers jointly a channel propagation model and the MAC mechanisms to have a realistic description of the network, even in situations where the emitted signal is heavily affected by reflections in any close surface or obstacle. The resulting platform also accurately evaluates both Line-Of-Sight (LOS) and Non-LOS (NLOS) contributions on each node and enables the effective use of Carrier Sense Multiple Acc

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Lian, Jie, Mohammad Noshad, and Maïté Brandt-Pearce. "Indoor multiuser visible light communication systems using Hadamard-coded modulation." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 378, no. 2169 (2020): 20190183. http://dx.doi.org/10.1098/rsta.2019.0183.

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Visible light communications (VLC) is a short-range optical wireless communication technology that uses light-emitting diodes (LEDs) as lighting devices and data transmitters. This paper describes a multiuser VLC system using Hadamard-coded modulation (HCM) for indoor data transmission. Considering the peak transmitted power limit of the LEDs, a DC-reduced HCM (DCR-HCM) is used to reduce the nonlinear clipping distortion. Since the Hadamard codewords have different bandwidth requirements for a given symbol rate, they can be assigned to users with varying hardware capabilities. Optimally assign

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Shi, Jianyang, Wenqing Niu, Yinaer Ha, et al. "AI-Enabled Intelligent Visible Light Communications: Challenges, Progress, and Future." Photonics 9, no. 8 (2022): 529. http://dx.doi.org/10.3390/photonics9080529.

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Visible light communication (VLC) is a highly promising complement to conventional wireless communication for local-area networking in future 6G. However, the extra electro-optical and photoelectric conversions in VLC systems usually introduce exceeding complexity to communication channels, in particular severe nonlinearities. Artificial intelligence (AI) techniques are investigated to overcome the unique challenges in VLC, whereas considerable obstacles are found in practical VLC systems applied with intelligent learning approaches. In this paper, we present a comprehensive study of the intel

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Kim, So-Yong, Cheol-Min Kim, and Seok-Joo Koh. "Framework of IoT Services over Unidirectional Visible Lights Communication Networks." Electronics 9, no. 9 (2020): 1349. http://dx.doi.org/10.3390/electronics9091349.

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Visible Light Communication (VLC) has been noted as an emerging technology for communications in wireless local area networks. VLC provides some distinctive features over the conventional wireless access technologies, such as Wi-Fi, Bluetooth, or ZigBee. The most prominent feature of VLC is that it can provide more exact location information, since it is based on a particular light. In addition, VLC can reduce the frequency interferences from numerous wireless channels, since it uses a completely different radio frequency channel from the conventional wireless access technologies. Thus, VLC ca

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Aller, Daniel G., Diego G. Lamar, Juan Rodriguez, et al. "Adapting Techniques to Improve Efficiency in Radio Frequency Power Amplifiers for Visible Light Communications." Electronics 9, no. 1 (2020): 131. http://dx.doi.org/10.3390/electronics9010131.

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It is well known that modern wireless communications systems need linear, wide bandwidth, efficient Radio Frequency Power Amplifiers (RFPAs). However, conventional configurations of RFPAs based on Class A, Class B, and Class AB exhibit extremely low efficiencies when they manage signals with a high Peak-to-Average Power Ratio (PAPR). Traditionally, a number of techniques have been proposed either to achieve linearity in the case of efficient Switching-Mode RFPAs or to improve the efficiency of linear RFPAs. There are two categories in the application of aforementioned techniques. First, techni

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D. Ponnimbaduge Perera, Tharindu, Akashkumar Rajaram, Sangay Chedup, Dushantha Nalin K. Jayakody, and Bin Chen. "Hybrid RF/visible light communication in downlink wireless system." International Journal of Engineering & Technology 7, no. 2.28 (2018): 272. http://dx.doi.org/10.14419/ijet.v7i2.28.12943.

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The spectrum crunch in Radio Frequency (RF) Communication and the prospect of Visible Light Communication (VLC) as an alternative to RF has made way for high speed VLC deployment. The ubiquitous coverage of RF and the high speed data rate achieved with VLC, make the two technologies complimentary to each other, making the hybrid RF/VLC an emerging trend in wireless networks. This study presents a downlink communication of a hybrid RF-VLC, where the signal received through RF channel by a relay is decoded and the symbols are converted into an electrical signals. The electrical signal is fed to

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Bao, Jing-Jing, Qiang Mai, and Jih-Fu Tu. "Study of Cooperative Strategy Based on Space–Time Labeling Diversity in Indoor Visible Light Communication Systems." Symmetry 12, no. 5 (2020): 702. http://dx.doi.org/10.3390/sym12050702.

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As an emerging technique of wireless communication, visible light communication is experiencing a boom in the global communications field, and the dream of accessing the Internet with light is fast becoming a reality. Multiple input multiple output, which is a key technique in radio frequency communication, can multiply channel capacity. However, it suffers the trouble of too large channel correlation when directly applied to visible light communication. The aims of this paper were to investigate spatial modulation and cooperative communication, then put forward a cooperative strategy based on

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Kim, Byung Wook. "Secrecy Dimming Capacity in Multi-LED PAM-Based Visible Light Communications." Wireless Communications and Mobile Computing 2017 (2017): 1–6. http://dx.doi.org/10.1155/2017/4094096.

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Recently, mobile cloud computing (MCC) has gained a lot of interest for researchers building the next-generation mobile applications. Because unauthorized access may cause serious problems, security and privacy with MCC have become significant issues. This paper addresses the secrecy dimming capacity of secure transmission in MCC over visible light communication (VLC) channels. By obtaining the entropy-maximizing symbol probability of multiple light emitting diode- (LED-) based pulse amplitude modulation (PAM), mathematical analysis of the secrecy dimming capacity of VLC was derived. Simulatio

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DARLIS, ARSYAD RAMADHAN, LITA LIDYAWATI, and DECY NATALIANA. "Implementasi Visible Light Communication (VLC) Pada Sistem Komunikasi." ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika 1, no. 1 (2017): 13. http://dx.doi.org/10.26760/elkomika.v1i1.13.

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ABSTRAKPerkembangan teknologi telah menunjukkan peningkatan yang cukup signifikan, terutama untuk bidang komunikasi. Hal ini terbukti dengan banyaknya media komunikasi baik itu nirkabel dan kabel. Pada penelitian ini dimanfaatkan cahaya tampak sebagai media dalam sistem komunikasi, dimana selama ini cahaya hanya digunakan sebagai penerangan saja. Visible Light Communication (VLC) adalah sebuah teknologi komunikasi yang memanfaatkan pancaran cahaya tampak dari lampu pada sistem komunikasi. Sistem komunikasi visible light ini terdiri dari pemancar dan penerima. Pemancar terdiri dari Light Emitti

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Perković, Toni, Tonko Kovačević, and Mario Čagalj. "BlinkComm: Initialization of IoT Devices Using Visible Light Communication." Wireless Communications and Mobile Computing 2018 (June 7, 2018): 1–16. http://dx.doi.org/10.1155/2018/8523078.

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Many applications from the Internet of Things (IoT) domain used in healthcare, smart homes, and cities involve a large number of interconnected wireless devices. To ensure privacy, confidentiality, and integrity of the information, devices should be initialized prior to any communication. In this paper, we present a secure initialization method for constrained IoT devices such as wireless sensors devices and/or actuators. The solution uses visible light communication (VLC) for the initial configuration of the IoT devices. The VLC system consists of a modulated light source such as a smartphone

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Li, X., N. Bamiedakis, X. Guo, et al. "Wireless Visible Light Communications Employing Feed-Forward Pre-Equalization and PAM-4 Modulation." Journal of Lightwave Technology 34, no. 8 (2016): 2049–55. http://dx.doi.org/10.1109/jlt.2016.2520503.

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