terrestrial wireless optical communication

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Terrestrial Wireless Optical Communication

Author : Devi Chadha
ISBN : 9780071818766
Genre : Technology & Engineering
File Size : 88. 63 MB
Format : PDF
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A practical guide to next-generation wireless terrestrial optical communication through the atmospheric channel Terrestrial Wireless Optical Communication provides in-depth details on free space optics (FSO), from basic concepts to design implementation. The book explains channel characteristics in the near-IR and IR range of the spectrum, atmospheric channel models, modulation and detection techniques, optimal performance, capacity enhancement methods, and forward-error coding schemes. Link and system design issues, reliability, and safety standards are also discussed. The information in this essential guide enables you to deliver cost-effective and transparent wireless network interoperability and expandability. Coverage includes: Introduction--optical wireless communication systems Wireless optical channels Channel modeling Modulation techniques Diversity and detection techniques in optical fading channels Channel capacity Coding in FSO channels FSO link and system design

Optical Wireless Communications

Author : Z. Ghassemlooy
ISBN : 9781351833257
Genre : Technology & Engineering
File Size : 83. 75 MB
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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.

Free Space Optical Communication

Author : A. Arockia Bazil Raj
ISBN : 9783110452617
Genre : Technology & Engineering
File Size : 86. 75 MB
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The book focuses on experimental modeling of atmospheric turbulence effects and mitigation of beam wandering and wavefront distortions in terrestrial free space optical communication (FSOC). This means, developing a reliable FSOC system with a necessary optoelectronic assembly to compensate the atmospheric turbulence effects, so as to practically attain the acceptable BER under any real-world open atmospheric turbulence conditions.

Radio Propagation And Adaptive Antennas For Wireless Communication Links

Author : Nathan Blaunstein
ISBN : 9780470069981
Genre : Technology & Engineering
File Size : 25. 10 MB
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Optical Wireless Communications

Author : Murat Uysal
ISBN : 9783319302010
Genre : Technology & Engineering
File Size : 21. 11 MB
Format : PDF
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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.

Advanced Optical Wireless Communication Systems

Author : Shlomi Arnon
ISBN : 9780521197878
Genre : Technology & Engineering
File Size : 81. 11 MB
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Combines theory with real-world case studies to give a comprehensive overview of modern optical wireless technology.

Multimedia Communications And Networking

Author : Mario Marques da Silva
ISBN : 9781466559202
Genre : Technology & Engineering
File Size : 37. 26 MB
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The result of decades of research and international project experience, Multimedia Communications and Networking provides authoritative insight into recent developments in multimedia, digital communications, and networking services and technologies. Supplying you with the required foundation in these areas, it illustrates the means that will allow for improved digital communications and networks. The book starts with a review of the fundamental concepts, requirements, and constraints in networks and telecommunications. It describes channel disturbances that can hinder system performance—including noise, attenuation, distortion, and interferences—and provides transmission techniques for mitigating these limitations. Analyzing both cable and wireless transmission mediums, the book describes the network protocol architecture concept and includes coverage of twisted pairs, coaxial and optical fiber cables, wireless propagation, satellite communications, and terrestrial microwave systems. Facilitating the understanding required to participate in the development of current and next generation networks and services, this comprehensive reference: Examines the range of network interconnections and WAN/MAN technologies, including synchronous optical networks (SONET), synchronous digital hierarchy (SDH), and third and next generation cellular systems (3G and 4G) Describes local area network (LAN) theory and technology, including data link layers and virtual LANs Explores network and transport layers, such as addressing, routing protocols, and IPv4 and IPv6 algorithms Covers TCP/IP services and applications Investigates different authentication and cryptographic systems, including digital signature, SSL, TLS, IPSEC, and public key infrastructure Walking you through the planning, design, and development of multimedia, telecommunications, and networking systems, the book provides a quick and easy way to develop and refine the skills required in the field. It clearly explains the principles and corresponding techniques you need to know to implement network security. The many examples and end-of-chapter questions also make it suitable for undergraduate and graduate-level computer science and electrical engineering courses.

Antennas And Propagation For Wireless Communication Systems

Author : Simon Saunders
ISBN : 9780470848791
Genre : Technology & Engineering
File Size : 32. 47 MB
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Antennas and propagation are of fundamental importance to the coverage, capacity and quality of all wireless communication systems. This book provides a solid grounding in antennas and propagation, covering terrestrial and satellite radio systems in both mobile and fixed contexts. Building on the highly successful first edition, this fully updated text features significant new material and brand new exercises and supplementary materials to support course tutors. A vital source of information for practising and aspiring wireless communication engineers as well as for students at postgraduate and senior undergraduate levels, this book provides a fundamental grounding in the principles of antennas and propagation without excessive recourse to mathematics. It also equips the reader with practical prediction techniques for the design and analysis of a very wide range of common wireless communication systems. Including: Overview of the fundamental electromagnetic principles underlying propagation and antennas. Basic concepts of antennas and their application to specific wireless systems. Propagation measurement, modelling and prediction for fixed links, macrocells, microcells, picocells and megacells Narrowband and wideband channel modelling and the effect of the channel on communication system performance. Methods that overcome and transform channel impairments to enhance performance using diversity, adaptive antennas and equalisers. Key second edition updates: New chapters on Antennas for Mobile Systems and Channel Measurements for Mobile Radio Systems. Coverage of new technologies, including MIMO antenna systems, Ultra Wideband (UWB) and the OFDM technology used in Wi-Fi and WiMax systems. Many new propagation models for macrocells, microcells and picocells. Fully revised and expanded end-of-chapter exercises. The Solutions Manual can be requested from http://www.wiley.com/go/saunders_antennas_2e

Free Space Optics Communication For Mobile Military Platforms

Author : Soo S. Neo
ISBN : 1423513525
Genre :
File Size : 66. 4 MB
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Free Space Optics (FSO) is widely regarded as the next-generation high-speed wireless communication technology. FSO has demonstrated its capability to deliver data faster than any other state-of-the-art wireless communication technology. Today, terrestrial FSO links are able to reach 150 kilometers; unmultiplexed data rates of 2.5 Gbps have been achieved; Acquisition, Pointing, and Tracking (APT) systems have been successfully deployed between communication satellites; and carrier-class availability are being offered by FSO vendors. However, FSO has not seen widespread use in the military. This is attributed to the fact that military platforms are largely mobile, while the progress in the commercial arena has largely been confined to links between fixed sites. This thesis analyzes the features of FSO technology while being mindful of how these apply to the military. These features include the bandwidth, spectrum use, bit error rates, communications security, free- space loss, and power consumption. The limitations and challenges presented by atmospheric effects, directional precision, line-of-sight obstructions, and laser safety are also studied. A final section will look at the acquisition, pointing, and tracking mechanisms that are necessary for deploying FSO on mobile platforms.

Advanced Free Space Optics Fso

Author : Arun K. Majumdar
ISBN : 9781493909186
Genre : Technology & Engineering
File Size : 74. 63 MB
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This title provides a comprehensive, unified tutorial covering the most recent advances in the emerging technology of free-space optics (FSO), a field in which interest and attention continue to grow along with the number of new challenges. This book is intended as an all-inclusive source to serve the needs of those who require information about the fundamentals of FSO, as well as up-to-date advanced knowledge of the state-of-the-art in the technologies available today. This text is intended for graduate students, and will also be useful for research scientists and engineers with an interest in the field. FSO communication is a practical solution for creating a three dimensional global broadband communications grid, offering bandwidths far beyond what is possible in the Radio Frequency (RF) range. However, the attributes of atmospheric turbulence and scattering impose perennial limitations on availability and reliability of FSO links. From a systems point-of-view, this groundbreaking book provides a thorough understanding of channel behavior, which can be used to design and evaluate optimum transmission techniques that operate under realistic atmospheric conditions. Topics addressed include: • FSO Physical and Statistical Models: Single/Multiple Inputs/Outputs • Understanding FSO: Theory and Systems Analysis • Modulation and Coding for Free-Space Optical Channels • Atmospheric Mitigation and Compensation for FSO Links • Non-line-of-sight (NLOS) Ultraviolet and Indoor FSO Communications • FSO Platforms: UAV and Mobile • Retromodulators for Free Space Data links • Hybrid Optical RF Communications • Free-space and Atmospheric Quantum Communications • Other related topics: Chaos-based and Terahertz (THz) FSO Communications

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