Download or read book Free Space Laser Communication with Ambient Light Compensation written by Saleh Faruque and published by Springer Nature. This book was released on 2021-04-17 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses 5G network capacity requirements with a new architecture for 5G Optical Backhaul Network. The author first describes the challenges for 5G backhaul network requirements and then the details of an Optical Backhaul Network for 5G. The author describes an architecture, in which small cells deploy as a cluster (i.e., 3-5 small cells in one cluster), where one small cell works as an aggregation point using an optical transceiver to backhaul the aggregated traffic to the nearest optical network unit, before it then goes to the core network. This book also illustrates the optical link budget analysis that can be used to determine the availability and the performances of the optical backhaul link in different deployment scenarios and different weather conditions. Provides a single-source reference to the basics of free space laser communication with ambient light compensation; Offers timely information, blending theory and practice; Written to be accessible to readers with varying backgrounds, including numerous illustrations; Provides hands-on experience through practical examples, which can be put to work to deploy and optimize cellular networks.
Download or read book Hybrid Testbed of a Free space Laser Communications System for Atmospheric Turbulence Compensation written by Marta Gonzalez Rodriguez and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last few years free-space laser communications have become a feasible and high-bandwidth wireless alternative to fiber optic cabling and radio frequency (RF) systems due to its extremely robustness against interference and the advantage of working with optical wavelengths in compare to the RF spectral band (flexibility, low loss, smaller size and greater bandwidth). Even though RF systems are nowadays still used in multiple applications the increasing data-rate and bandwidth need, become clear a change to Free Space Communications (FSO). FSO is an optical communication technology where free space acts as a medium between transceivers that should be in line-of-sight (LOS) in order to achieve a successful transmission of optical signal. However, in free-space optical communication links there are also some unavoidable environmental challenges. One of this, atmospheric turbulence causes fluctuations in both the amplitude and the phase of the received light signal and also induces fading to the wave front, impairing link performance. The compensation of transmission impairments can be performed using spatial diversity techniques. In order to mitigate this fluctuations, it is necessary to use a system with a receiver array formed by a number of detectors, where each detector will observe a different section of the optical beam since these fluctuations can cause the signal-to-noise (SNR) that arrives to the receiver is not good enough to retrieve the information. In a previous Treball Final de Grau (TFG) it was proposed a solution for the signal fading caused by atmospheric turbulence by using a hybrid system (optical and RF) formed by an array of four sub-apertures but it was not able to compensate the system on real time. In this project the feasibility of the technique when it comes to compensate for atmospheric turbulence with signals up to 1 GHz bandwidth was demonstrated. However, given the simplicity of hardware it was not possible to perform real-time compensation. This project aims to get the compensation speed required in order to act in real-time on the channel as well as improve some of the results in the previous version of the processing algorithm. For this reason, it has been necessary to include new devices and replace others.
Download or read book Performance metric Driven Atmospheric Compensation for Robust Free space Laser Communication written by Peter N. Crabtree and published by . This book was released on 2006 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Free space Laser Communication Technologies written by and published by . This book was released on 2006 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Free Space Optical Communication written by Hemani Kaushal and published by Springer. This book was released on 2017-01-06 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an in-depth understanding of free space optical (FSO) communication with a particular emphasis on optical beam propagation through atmospheric turbulence. The book is structured in such a way that it provides a basic framework for the beginners and also gives a concise description from a designer’s perspective. The book provides an exposure to FSO technology, fundamental limitations, design methodologies, system trade-offs, acquisition, tracking and pointing (ATP) techniques and link-feasibility analysis. The contents of this book will be of interest to professionals and researchers alike. The book may also be used as a textbook for engineering coursework and professional training.
Download or read book Free space Laser Communications written by and published by . This book was released on 2005 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Free Space Laser Communications written by Arun K. Majumdar and published by Springer Science & Business Media. This book was released on 2010-05-05 with total page 429 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a comprehensive tutorial on the emerging technology of free-space laser communications (FSLC). The book offers an all-inclusive source of information on the basics of FSLC, and a review of state-of-the-art technologies. Coverage includes atmospheric effects for laser propagation and FSLC systems performance and design. Free-Space Laser Communications is a valuable resource for engineers, scientists and students interested in laser communication systems designed for the atmospheric optical channel.
Download or read book Free space Laser Communication and Atmospheric Propagation Xxviii written by Hamid Hemmati and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Free Space Laser Communication and Atmospheric Propagation XXIV 24 26 January 2012 San Francisco California United States written by Free-Space Laser Communication and Atmospheric Propagation (Conference) and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electrical Electronics Abstracts written by and published by . This book was released on 1997 with total page 1948 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optical Wireless Communications written by Murat Uysal and published by Springer. This book was released on 2016-08-25 with total page 639 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Harnessing Light written by National Research Council and published by National Academies Press. This book was released on 1998-09-25 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical science and engineering affect almost every aspect of our lives. Millions of miles of optical fiber carry voice and data signals around the world. Lasers are used in surgery of the retina, kidneys, and heart. New high-efficiency light sources promise dramatic reductions in electricity consumption. Night-vision equipment and satellite surveillance are changing how wars are fought. Industry uses optical methods in everything from the production of computer chips to the construction of tunnels. Harnessing Light surveys this multitude of applications, as well as the status of the optics industry and of research and education in optics, and identifies actions that could enhance the field's contributions to society and facilitate its continued technical development.
Download or read book Visible Light Communications written by Zabih Ghassemlooy and published by CRC Press. This book was released on 2017-06-26 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Handbook of Fiber Optic Data Communication written by and published by Academic Press. This book was released on 2002-04-13 with total page 843 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Handbook includes chapters on all the major industry standards, quick reference tables, helpful appendices, plus a new glossary and list of acronyms. This practical handbook can stand alone or as a companion volume to DeCusatis: Fiber Optic Data Communication: Technological Advances and Trends (February 2002, ISBN: 0-12-207892-6), which was developed in tandem with this book. * Includes emerging technologies such as Infiniband, 10 Gigabit Ethernet, and MPLS Optical Switching* Describes leading edge commercial products, including LEAF and MetroCore fibers, dense wavelength multiplexing, and Small Form Factor transceiver packages* Covers all major industry standards, often written by the same people who designed the standards themselves* Includes an expanded listing of references on the World Wide Web, plus hard-to-find references for international, homologation, and type approval requirements* Convenient tables of key optical datacom parameters and glossary with hundreds of definitions and acronyms* Industry buzzwords explained, including SAN, NAS, and MAN networking* Datacom market analysis and future projections from industry leading forecasters
Download or read book MEMS Mirrors written by Huikai Xie and published by MDPI. This book was released on 2018-05-04 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "MEMS Mirrors" that was published in Micromachines
Download or read book Optical Wireless Communications for Broadband Global Internet Connectivity written by Arun K. Majumdar and published by Elsevier. This book was released on 2018-10-19 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical Wireless Communications for Broadband Global Internet Connectivity: Fundamental and Potential Applications provides a comprehensive overview for readers who require information about the fundamental science behind optical wireless communications, as well as up-to-date advanced knowledge of the state-of-the-art technologies available today. The book is a useful resource for scientists, researchers, engineers and students interested in understanding optical, wireless communication systems for global channels. Readers will find beneficial knowledge on how related technologies of optical wireless communications can be integrated into achieving worldwide Internet connectivity. Presents an in-depth coverage of information on optical wireless communication in a single source Combines the fundamentals with the most recent advanced technology of achieving global Internet access and connectivity Provides derivations of the mathematical equations Includes between chapter sections where information and learning from one chapter is connected to other chapters
Download or read book Underwater Communications written by Marco Lanzagorta and published by Springer Nature. This book was released on 2022-05-31 with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt: Underwater vehicles and underwater moorings are increasing in tactical importance. As such, it is critical to have a robust and secure communication system connecting underwater vehicles on a long seaborne mission and a ground station. As a matter of fact, the deployment of efficient communication links with underwater vehicles is one of the greatest technological challenges presently confronted by the world's naval forces. To circumvent most of the limitations involved in the use of RF or acoustic channels for perfectly secure communications with underwater vehicles, it is worth considering the feasibility of an optical channel to facilitate a two-way satellite communication link secured via perfectly secure ciphers enabled by a quantum key distribution protocol. This book offers a concise review of underwater communications systems. Our approach is pedagogical, making a strong emphasis on the physics behind the attenuating properties of the oceanic environment and the propagation of electromagnetic signals in the ELF, VLF, and optical bands. We assume the reader is familiar with the basic principles of classical electrodynamics and optics. The system design, components, and noise analysis of an underwater optical communications device are discussed in detail. Furthermore, we offer simulations of the performance of the communication system for different types of ocean waters. Our final conclusion is that it appears to be feasible to design and build underwater communications using optical classical and quantum channels secured with quantum key distribution protocols. Table of Contents: Introduction / Electrodynamics of Attenuating Media / Underwater Communication Channels / Underwater Optical Communications: Technology / Underwater Optical Communications: Noise Analysis / Underwater Optical Communications: System Performance / Underwater Quantum Communications / Conclusions PDF (1764 KB) PDF Plus (1444 KB)
