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• Author : Zabih Ghassemlooy,Luis Nero Alves,Stanislav Zvanovec,Mohammad-Ali Khalighi
• Publisher :Unknown
• Release Date :2017-06-26
• Total pages :568
• ISBN : 9781315350240

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Summary : Visible Light Communications, written by leading researchers, provides a comprehensive overview of theory, stimulation, design, implementation, and applications. The book is divided into two parts – the first devoted to the underlying theoretical concepts of the VLC and the second part covers VLC applications. Visible Light Communications is an emerging topic with multiple functionalities including data communication, indoor localization, 5G wireless communication networks, security, and small cell optimization. This concise book will be of valuable interest from beginners to researchers in the field.

• Author : Jin-Yuan Wang
• Publisher :Unknown
• Release Date :2017-07-26
• Total pages :164
• ISBN : 9789535134077

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Summary : Visible light communication (VLC) has drawn much attention recently. Compared to the traditional radio frequency wireless communications (RFWC), VLC has many advantages, such as worldwide availability, high security, large bandwidth, immunity to radio frequency interference, and unlicensed spectrum. Due to its superiority, VLC has become a complementary solution to the overcrowded RFWC. This book intends to introduce the latest research progress in VLC, which covers the novel modulation techniques for VLC, the multiple input multiple output (MIMO) techniques for VLC, the collaborative communication techniques for VLC, and the practical applications of VLC. The book is a useful resource for researchers, engineers, scientists, and students interested in understanding and designing VLC systems.

• Author : Zhaocheng Wang,Qi Wang,Zhengyuan Xu,Wei Huang
• Publisher :Unknown
• Release Date :2017-11-29
• Total pages :368
• ISBN : 9781119331384

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Summary : A complete and comprehensive reference on modulation and signal processing for visible light communication This informative new book on state-of-the-art visible light communication (VLC) provides, for the first time, a systematical and advanced treatment of modulation and signal processing for VLC. Visible Light Communications: Modulation and Signal Processing offers a practical guide to designing VLC, linking academic research with commercial applications. In recent years, VLC has attracted attention from academia and industry since it has many advantages over the traditional radio frequency, including wide unregulated bandwidth, high security, and low cost. It is a promising complementary technique in 5G and beyond wireless communications, especially in indoor applications. However, lighting constraints have not been fully considered in the open literature when considering VLC system design, and its importance has been underestimated. That’s why this book—written by a team of experts with both academic research experience and industrial development experience in the field—is so welcome. To help readers understand the theory and design of VLC systems, the book: Details many modern techniques on both modulation and signal processing aspects Links academic research with commercial applications in visible light communications as well as other wireless communication systems Combines theoretical rigor with practical examples in presenting optical camera communication systems Visible Light Communications: Modulation and Signal Processing serves as a useful tool and reference book for visible light communication professionals, as well as wireless communication system professionals and project managers. It is also an important guide for undergraduates and graduates who want to conduct research in areas of wireless communications.

• Author : Mohsen Kavehrad,Reza Aminikashani
• Publisher :Unknown
• Release Date :2019-11-19
• Total pages :154
• ISBN : 1138617474

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Summary : This book demonstrates the research on VLC based indoor localization in four aspects: first, it constructs the concept and model of the system; second, positioning algorithms, as the main issue in indoor localization, are detailed; third, many approaches are proposed to further improve the positioning performance; fourth, challenges will be detailed. Impulse response with multipath reflections are analyzed. Orthogonal frequency division multiplexing (OFDM) is proposed, and positioning performance is largely improved compared to On-off-keying (OOK) modulation. The readers will get a broad view of VLC based indoor localization from the background to the future challenges.

• Author : Shlomi Arnon
• Publisher :Unknown
• Release Date :2015-03-05
• Total pages :224
• ISBN : 9781107061552

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Summary : This book sets out the theoretical principles of visible light communication (VLC), and outlines key applications of this cutting-edge technology.

• Author : Narottam Das
• Publisher :Unknown
• Release Date :2014-11-19
• Total pages :226
• ISBN : 9789535117308

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Summary : High-speed optical communication is very much useful in telecommunication systems, data processing and networking. It consists of a transmitter that encodes a message into an optical signal, a channel that carries this optical signal to its desired destination, and a receiver that reproduces the message from the received optical signal. It presents up to date results on communication systems, along with the explanations of their relevance, from leading researchers in this field. The chapters of this book cover general concepts of high-speed optical communication, optical devices used optical communication, and optical communication systems. In recent years, optical devices and other enhanced signal processing functions are also considered in depth for high-speed optical communications systems. Commonly used optical devices are light emitting diodes and photodetectors. This book is targeted at research, development and design engineers from the teams in manufacturing industry, academia and telecommunication industries.

• Author : Nan Chi
• Publisher :Unknown
• Release Date :2018-09-01
• Total pages :245
• ISBN : 9783662566602

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Summary : The book systematically introduces the visible light communication (VLC) technology in detail. Basic concepts and how to realize the system are both illustrated, including the transmitter, channel, and the receiver. In addition, a good many experimental results are presented to help readers further understand the VLC technologies. The upper-layer protocols of visible light communication system and the technology trends are also discussed. This book can be a good reference work for researchers, engineers, and graduate students in the fields of communications, LED, and optics.

• Author : Peter Adam Hoeher
• Publisher :Unknown
• Release Date :2019-07-08
• Total pages :250
• ISBN : 9783446461727

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Summary : Visible Light Communication (VLC) is an emerging wireless data transmission technology. Light is used simultaneously for illumination as well as for communication and/or positioning purposes. If fully networked, dubbed Li-Fi, VLC systems complement Wi-Fi access points. VLC is an incident of optical wireless communications (OWC). OWC systems provide high data security, are license-free, and may substitute radio systems when these either fail or are not permitted. VLC technology enhances smart lighting infrastructure and Internet-of-Things (IoT) use cases. LED-based Car-to-X communication is an enabling platform towards autonomous driving. The textbook covers OWC applications, fundamentals of illumination engineering, channel modeling, optical intensity modulation schemes, VLC standardization efforts, the software-defined radio concept, selection criteria of photonic devices, fundamental circuit designs, and visible light positioning. The book is written for students in electrical and information engineering or adjacent areas, as well as for engineers, information scientists, and physicists in research and development.

• Author : Xavier N. Fernando,Hasan Farahneh
• Publisher :Unknown
• Release Date :2020
• Total pages :229
• ISBN : 0750322845

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Summary : Visible light communication (VLC) has emerged as an attractive alternative to radio frequency (RF) communication, due to its abundant, license free bandwidth and cost-effectiveness. The visible light spectrum is much larger than the entire RF spectrum, and largely unexplored. VLC has proved its viability in automotive applications to provide short range vehicle-to-vehicle and vehicle-to-infrastructure communications due to increased deployment of LED lights and image sensors in modern vehicles. However, there are a few challenges, described in this book, that need to be addressed before global adaptation. VLC can be a blessing for intelligent transportation systems and autonomous vehicles. This book stands out as a must-read for researchers, graduate students and industry professionals who work in the VLC field. Part of IOP Series in Emerging Technologies in Optics and Photonics.

• Author : Chen Gong
• Publisher :Unknown
• Release Date :2019
• Total pages :1
• ISBN : 3039214365

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Summary : In recent years, wireless communications have significantly evolved due to the advanced technology of smartphones;, portable devices; and the rapid growth of Internet of Things, e-Health, and intelligent transportation systems . Moreover, there is anare increasing need fors of emerging intelligent services like positioning and sensing in athe future intelligence society. Recent years have witnessed the growing research interests and activities in the communication and intelligencet services in the optical wireless spectrum, as a complementary technology to more established radio frequency (RF)-based systems, to overcome the spectrum sparsity and increases data rates in crowded locations, due to the limited transmission range and interference. The OWC technology offers advantages such as free license, wide bandwidth, inherent security, no RF electromagnetic interference, and immunity to electromagnetic interference. The attractive applications of the optical spectrum include ultra-violet tactic communication, blue/green underwater communication, visible light positioning, and vehicular communication/sensing in intelligent transportation systems. The present Iissue, as named "Visible Light Communication and Positioning", focuses on visible light communication and visible light positioning, where four papers are on visible light communication and three papers are on visible light positioning. For visible light communication, the published works focus on the devices, the physical-layer techniques, and the system work aspects. Besides VLC, visible light positioning works include fingerprint-based indoor positioning system for multiple reflections, the impact of LED tilt on visible light positioning accuracy, and a mobile optoelectronic tracking system based on feedforward control.

• Author : Jin-Yuan Wang
• Publisher :Unknown
• Release Date :2017-07-26
• Total pages :164
• ISBN : 9789535134077

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Summary : Visible light communication (VLC) has drawn much attention recently. Compared to the traditional radio frequency wireless communications (RFWC), VLC has many advantages, such as worldwide availability, high security, large bandwidth, immunity to radio frequency interference, and unlicensed spectrum. Due to its superiority, VLC has become a complementary solution to the overcrowded RFWC. This book intends to introduce the latest research progress in VLC, which covers the novel modulation techniques for VLC, the multiple input multiple output (MIMO) techniques for VLC, the collaborative communication techniques for VLC, and the practical applications of VLC. The book is a useful resource for researchers, engineers, scientists, and students interested in understanding and designing VLC systems.

• Author : Rastislav Róka
• Publisher :Unknown
• Release Date :2017-06-21
• Total pages :372
• ISBN : 9789535132752

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Summary : The book Optical Fiber and Wireless Communications provides a platform for practicing researchers, academics, PhD students, and other scientists to review, plan, design, analyze, evaluate, intend, process, and implement diversiform issues of optical fiber and wireless systems and networks, optical technology components, optical signal processing, and security. The 17 chapters of the book demonstrate capabilities and potentialities of optical communication to solve scientific and engineering problems with varied degrees of complexity.

• Author : Murat Uysal,Carlo Capsoni,Zabih Ghassemlooy,Anthony Boucouvalas,Eszter Udvary
• Publisher :Unknown
• Release Date :2016-08-25
• Total pages :634
• ISBN : 9783319302010

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Summary : This book focuses on optical wireless communications (OWC), an emerging technology with huge potential for the provision of pervasive and reliable next-generation communications networks. It shows how the development of novel and efficient wireless technologies can contribute to a range of transmission links essential for the heterogeneous networks of the future to support various communications services and traffic patterns with ever-increasing demands for higher data-transfer rates. The book starts with a chapter reviewing the OWC field, which explains different sub-technologies (visible-light, ultraviolet (UV) and infrared (IR) communications) and introduces the spectrum of application areas (indoor, vehicular, terrestrial, underwater, intersatellite, deep space, etc.). This provides readers with the necessary background information to understand the specialist material in the main body of the book, which is in four parts. The first of these deals with propagation modelling and channel characterization of OWC channels at different spectral bands and with different applications. The second starts by providing a unified information-theoretic treatment of OWC and then discusses advanced physical-layer methodologies (including, but not limited to: advanced coding, modulation diversity, cooperation and multi-carrier techniques) and the ultimate limitations imposed by practical constraints. On top of the physical layer come the upper-layer protocols and cross-layer designs that are the subject of the third part of the book. The last part of the book features a chapter-by-chapter assessment of selected OWC applications. Optical Wireless Communications is a valuable reference guide for academic researchers and practitioners concerned with the future development of the world’s communication networks. It succinctly but comprehensively presents the latest advances in the field.

• Author : Roser Viñals Terrés
• Publisher :Unknown
• Release Date :2016
• Total pages :229
• ISBN : OCLC:1120572388

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Summary : The lighting is going through revolution. The use of Light Emitting Diodes (LEDs) has greatly increased during the last few years, meanwhile incandescent and fluorescent lamps have become obsolete. The LEDs, apart from being extremely high energy efficient, are able to switch to different light intensities at very high speed. This fact, along with the looming crisis of Radio Frequency (RF) spectrum, has given rise to an attractive communication technology known as Visible Light Communication (VLC) that uses the huge license- free spectrum of approximately 400 THz, which is more than 1,000 larger than the RF spectrum. This technology offers a novel alternative to RF, enabling the development of wireless communications that make use of existing lighting infrastructure. This thesis studies multi-user multiple-input single-output (MU-MISO) visible light communications tech- niques for indoor broadcast systems. Particularly, we have proposed a railway wagon as scenario. Transmitters, configured as multiple LED arrays, and multiple users equipped with one single photodetector (PD) are consid- ered. We tackle two relevant challenges in such broadcast systems: how to deal with the multi-user interference (MUI) and how to design the whole system in order to meet the requirement of having a real-valued and positive Visible Light (VL) signal feeding the LED. Unlike RF counterpart, the VL signal is modulated on light intensity and, consequently, is always positive. This critical constraint imposed by intensity-modulated/direct-detection (IM/DD) systems limits the direct application of the extended theory developed for conventional wireless com- munications. Apart from the non-negativity constraint, we examine the design with individual per-LED optical power constraints. This work presents four coordinated multipoint transmission techniques for MISO transmissions in VLC. Linear precoding schemes such as zero-forcing (ZF) have attracted a lot of interest in RF. Firstly, we consider the design of the ZF precoder giving special attention to a specific generalized inverse known as pseudo-inverse. Alternatively, a Time Division Multiple Access (TDMA) system is also studied. As neither of the two mentioned precoders are optimal in terms of sum-rate, we proceed with the design of ZF precoders through an optimization problem that maximizes the weighted sum-rate considering both the positivity constraint and the maximum optical power constraint per-LED. We present two approaches for solving this problem. In the first approach, we find a closed-form solution to the problem that despite being suboptimal achieves a good trade-off between low- complexity and performance. In the second approach, we rewrite the problem as a standard convex problem and we find numerically the solution. Finally, we demonstrate the improved performance offered by our approaches.

• Author : Svilen Dimitrov,Harald Haas
• Publisher :Unknown
• Release Date :2015-03-12
• Total pages :224
• ISBN : 9781107049420

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Summary : Learn how to build efficient, simple, high performance indoor optical wireless communication systems based on visible and infrared light.

• Author : Xavier Fernando,Hasan Farahneh
• Publisher :Unknown
• Release Date :2019-11-13
• Total pages :200
• ISBN : 0750322829

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Summary : A must-read for researchers, graduate students and industry professionals who work in the VLC field, this book investigates the suitability of VLC for vehicular communications from a fundamental wireless communication standpoint. Mathematically accurate channel models are developed, and advanced signal processing approaches to overcome challenges such as sunlight interference, shadowing and fast changing channels are described. Results are verified through simulation with realistic parameters.

• Author : Sergei Pyshkin,John Ballato
• Publisher :Unknown
• Release Date :2017-07-12
• Total pages :372
• ISBN : 9789535133698

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Summary : Optoelectronics - Advanced Device Structures (Book IV) is following the Optoelectronics (Books I, II, and III) published in 2011, 2013, and 2015, as part of the InTech collection of international works on optoelectronics. Accordingly, as with the first three books of the collection, this book covers recent achievements by specialists around the world. The growing number of countries participating in this endeavor as well as joint participation of the US and Moldova scientists in edition of this book testifies to the unifying effect of science. An interested reader will find in the book the description of properties and applications employing organic and inorganic materials, as well as the methods of fabrication and analysis of operation and regions of application of modern optoelectronic devices.

• Author : Qi Wang
• Publisher :Unknown
• Release Date :2017
• Total pages :229
• ISBN : OCLC:1154179029

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Summary : Index modulation-aided orthogonal frequency-division multiplexing(IM-OFDM) is a promising modulation technique to achieve high spectral and energy efficiency. In this chapter, the conventional optical OFDM schemes are firstly reviewed, followed by the principles of IM-OFDM. The application of IM-OFDM in visible light communication (VLC) systems is introduced, and its performance is compared with conventional optical OFDM, which verifies its superiority. Finally, the challenges and opportunities of IM-OFDM are discussed for the VLC applications.

• Author : Z. Ghassemlooy,W. Popoola,S. Rajbhandari
• Publisher :Unknown
• Release Date :2017-07-12
• Total pages :575
• ISBN : 9781351833257

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Summary : Detailing a systems approach, Optical Wireless Communications: System and Channel Modelling with MATLAB®, is a self-contained volume that concisely and comprehensively covers the theory and technology of optical wireless communications systems (OWC) in a way that is suitable for undergraduate and graduate-level students, as well as researchers and professional engineers. Incorporating MATLAB® throughout, the authors highlight past and current research activities to illustrate optical sources, transmitters, detectors, receivers, and other devices used in optical wireless communications. They also discuss both indoor and outdoor environments, discussing how different factors—including various channel models—affect system performance and mitigation techniques. In addition, this book broadly covers crucial aspects of OWC systems: Fundamental principles of OWC Devices and systems Modulation techniques and schemes (including polarization shift keying) Channel models and system performance analysis Emerging visible light communications Terrestrial free space optics communication Use of infrared in indoor OWC One entire chapter explores the emerging field of visible light communications, and others describe techniques for using theoretical analysis and simulation to mitigate channel impact on system performance. Additional topics include wavelet denoising, artificial neural networks, and spatial diversity. Content also covers different challenges encountered in OWC, as well as outlining possible solutions and current research trends. A major attraction of the book is the presentation of MATLAB simulations and codes, which enable readers to execute extensive simulations and better understand OWC in general.

• Author : Zaigham Mahmood
• Publisher :Unknown
• Release Date :2019-08-02
• Total pages :326
• ISBN : 9783030248925

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Summary : This book has a focus on the development and deployment of the Industrial Internet of Things (IIoT) paradigm, discussing frameworks, methodologies, benefits and limitations, as well as providing case studies of employing the IoT vision in the industrial domain. IIoT is becoming an attractive business reality for many organisations such as manufacturing, logistics, oil and gas, energy and other utilities, mining, aviation, and many more. The opportunities for this paradigm are huge, and according to one report, the IIoT market is predicted to reach $125 billion by 2021. The driving philosophy behind the IIoT is that smart machines are better than humans at accurately capturing, analysing and communicating real-time data. The underlying technologies include distributed computing, machine learning, artificial intelligence, and machine-to-machine communication, with a typical IIoT system consisting of intelligent systems (applications, controllers, sensors, and security mechanisms), data communication infrastructure (cloud computing, edge computing, etc.), data analytics (to support business intelligence and corporate decision making), and most importantly the human element. The promised benefits of the IIoT include enhanced safety, better reliability, smart metering, inventory management, equipment tracking, and facilities management. There are, however, numerous issues that are also becoming the focus of active research, such as concerns regarding service availability, data security, and device communication. Lack of ubiquitous interoperability between heterogeneous devices is also a major concern. This book intends to fill a gap in the IIoT literature by providing the scientific contributions and latest developments from researchers and practitioners of international repute, focusing on frameworks, methodologies, benefits, and inherent issues/barriers to connected environments, especially in industrial settings. The intended audience includes network specialists, hardware engineers, and security experts who wish to adopt newer approaches for device connectivity, IoT security, and sensor-based devices design. University level students, researchers and practitioners will also find the latest innovation in technology and newer approaches relevant to the IIoT from a distributed computing perspective.

• Author : Vincent W. S. Wong,Robert Schober,Derrick Wing Kwan Ng,Li-Chun Wang
• Publisher :Unknown
• Release Date :2017-03-02
• Total pages :552
• ISBN : 9781107172418

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Summary : Get up to speed with the protocols, network architectures and techniques for 5G wireless networks with this comprehensive guide.