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Methodes De Mesure Et De Modelisation De Canaux De Propagation Radiomobiles
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Book Synopsis Measurements using Optic and RF Waves by : Frédérique de Fornel
Download or read book Measurements using Optic and RF Waves written by Frédérique de Fornel and published by John Wiley & Sons. This book was released on 2013-02-04 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: The scientific and technical basis underpinning modern measurement techniques used for electromagnetic quantities and phenonema is necessarily wide-ranging, as the electromagnetic environment spans all possible frequencies and wavelengths. Measurements must be applicable in fields as varied as nanotechnologies, telecommunications, meteorology, geo-location, radio-astronomy, health, biology, and many others. In order to adequately cover the many different facets of the topic, this book provides examples from the entire range of the electromagnetic spectrum — covering frequencies from several hertz to terahertz, and considering wavelength distances ranging from nanometers to light-years in optics. It then provides coverage of the various measurement techniques using electromagnetic waves for various applications, devoting chapters to each different field of application. This comprehensive book gives detailed information on: the various techniques and methods available to measure the key characteristics of electromagnetic waves, in terms of the local field and phase for a broad field of frequencies; determination of physical quantities such as distance, time, etc., using electromagnetic properties; new approaches to measurements in the field of electromagnetic distribution in complex structures media, such as biological tissues and in the nanosciences.
Author :North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Electromagnetic Wave Propagation Panel. Symposium Publisher : ISBN 13 : Total Pages :448 pages Book Rating :4.E/5 ( download)
Book Synopsis Propagation Effects and Circuit Performance of Modern Military Radio Systems with Particular Emphasis on Those Employing Bandspreading by : North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Electromagnetic Wave Propagation Panel. Symposium
Download or read book Propagation Effects and Circuit Performance of Modern Military Radio Systems with Particular Emphasis on Those Employing Bandspreading written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Electromagnetic Wave Propagation Panel. Symposium and published by . This book was released on 1989 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: The importance of understanding radio wave propagation increases as radar and communication systems become more complex, i.e. digital systems, frequency adaptive systems, spread spectrum systems, etc. Increasingly wider frequency bandwidths are used in modern military systems.
Book Synopsis Radio Wave Propagation by : Lucien Boithias
Download or read book Radio Wave Propagation written by Lucien Boithias and published by McGraw-Hill Companies. This book was released on 1987 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Radio Wave Propagation for Telecommunication Applications by : Hervé Sizun
Download or read book Radio Wave Propagation for Telecommunication Applications written by Hervé Sizun and published by Springer Science & Business Media. This book was released on 2006-03-30 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the physical mechanisms involved in the propagation of electromagnetic waves in the radiofrequency range, inside and outside buildings, in the terrestrial and near space environments, with a special focus on mobile radio communication. It combines a theoretical and an experimental approaches with an understanding of the physical environment through adequate formulations of the laws of electromagnetism. It should thus provide the background needed by advanced students and development engineers for the conception of high quality and reliable telecommunication systems.
Book Synopsis Méthodes de mesure et de modélisation de canaux de propagation radiomobiles by : Karim Zayana
Download or read book Méthodes de mesure et de modélisation de canaux de propagation radiomobiles written by Karim Zayana and published by . This book was released on 2003 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lors des phases de communications les plus critiques d'une transmission radiomobile, par exemple en bordure de cellule, on a tout intérêt à relier le mobile simultanément à plusieurs stations. Cela s'appelle la macrodiversité. Cette technique est inhérente au fonctionnement des systèmes radiomobiles de nouvelle génération, tel le CDMA. La mise en œuvre de l'algorithme de handover qui gère la macrodiversité, et les performances même de la macrodiversité peuvent dépendre des affaiblissements moyens sur les différentes voies, voire des affaiblissements rapides ou des profils de réponses impulsionnelles instantanées. D'où l'importance de bien savoir caractériser les phénomènes de propagation dans ce contexte. Nous avons d'abord entrepris des études bande étroite, articulées autour de simulations et de mesures. Elles nous ont aidé à élaborer un modèle informatique très complet des masques, intégrant à la fois leurs propriétés d'inter et d'autocorrélation. Ce modèle a ensuite été porté sur différents environnements de calcul. Il permet de restituer avec plus de réalisme les masques lors de simulations systèmes. Nous avons complété ces études par des études large bande qui nous ont amené à proposer des améliorations sur le sondeur et à définir de nouveaux protocoles de mesure. Nous avons ainsi breveté une méthode de mesure large bande en macrodiversité, méthode dont on pourrait s'inspirer pour effectuer, de façon plus générale, de l'identification de canal. Nous avons également mené une réflexion sur les séquences utilisées dans les sondeurs à compression d'impulsion et sur les moyens de les optimiser
Book Synopsis Operational Decision Aids for Exploiting Or Mitigating Electromagnetic Propagation Effects by :
Download or read book Operational Decision Aids for Exploiting Or Mitigating Electromagnetic Propagation Effects written by and published by . This book was released on 1989 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annales des télécommunications written by and published by . This book was released on 1997-07 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Quantum Communications and Cryptography by : Alexander V. Sergienko
Download or read book Quantum Communications and Cryptography written by Alexander V. Sergienko and published by CRC Press. This book was released on 2018-10-03 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: All current methods of secure communication such as public-key cryptography can eventually be broken by faster computing. At the interface of physics and computer science lies a powerful solution for secure communications: quantum cryptography. Because eavesdropping changes the physical nature of the information, users in a quantum exchange can easily detect eavesdroppers. This allows for totally secure random key distribution, a central requirement for use of the one-time pad. Since the one-time pad is theoretically proven to be undecipherable, quantum cryptography is the key to perfect secrecy. Quantum Communications and Cryptography is the first comprehensive review of the past, present, and potential developments in this dynamic field. Leading expert contributors from around the world discuss the scientific foundations, experimental and theoretical developments, and cutting-edge technical and engineering advances in quantum communications and cryptography. The book describes the engineering principles and practical implementations in a real-world metropolitan network as well as physical principles and experimental results of such technologies as entanglement swapping and quantum teleportation. It also offers the first detailed treatment of quantum information processing with continuous variables. Technologies include both free-space and fiber-based communications systems along with the necessary protocols and information processing approaches. Bridging the gap between physics and engineering, Quantum Communications and Cryptography supplies a springboard for further developments and breakthroughs in this rapidly growing area.
Book Synopsis Ultra Wide Band Antennas by : Xavier Begaud
Download or read book Ultra Wide Band Antennas written by Xavier Begaud and published by John Wiley & Sons. This book was released on 2013-03-04 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultra Wide Band Technology (UWB) has reached a level of maturity that allows us to offer wireless links with either high or low data rates. These wireless links are frequently associated with a location capability for which ultimate accuracy varies with the inverse of the frequency bandwidth. Using time or frequency domain waveforms, they are currently the subject of international standards facilitating their commercial implementation. Drawing up a complete state of the art, Ultra Wide Band Antennas is aimed at students, engineers and researchers and presents a summary of internationally recognized studies.
Download or read book MIMO written by Alain Sibille and published by Academic Press. This book was released on 2010-12-03 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: Foreword from Arogyaswami Paulraj, Professor (Emeritus), Stanford University (USA) - The first book to show how MIMO principles can be implemented in today's mobile broadband networks and components - Explains and solves some of the practical difficulties that arise in designing and implementing MIMO systems - Both theory and implementation sections are written in the context of the most recent standards: IEEE 802.11n (WiFi); IEEE 802.16 (WIMAX); 4G networks (3GPP/3GPP2, LTE)
Book Synopsis Pervasive Mobile and Ambient Wireless Communications by : Roberto Verdone
Download or read book Pervasive Mobile and Ambient Wireless Communications written by Roberto Verdone and published by Springer Science & Business Media. This book was released on 2012-01-02 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reporting the findings of COST 2100, a major European intergovernmental project, this volume offers system designers a good source of guidelines based on channel characterization and measurement-based modeling, as well as worthwhile ideas for future research.
Book Synopsis Building Wireless Community Networks by : Rob Flickenger
Download or read book Building Wireless Community Networks written by Rob Flickenger and published by "O'Reilly Media, Inc.". This book was released on 2003 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Building Wireless Community Networks is about getting people online using wireless network technology. The 802.11b standard (also known as WiFi) makes it possible to network towns, schools, neighborhoods, small business, and almost any kind of organization. All that's required is a willingness to cooperate and share resources. The first edition of this book helped thousands of people engage in community networking activities. At the time, it was impossible to predict how quickly and thoroughly WiFi would penetrate the marketplace. Today, with WiFi-enabled computers almost as common as Ethernet, it makes even more sense to take the next step and network your community using nothing but freely available radio spectrum. This book has showed many people how to make their network available, even from the park bench, how to extend high-speed Internet access into the many areas not served by DSL and cable providers, and how to build working communities and a shared though intangible network. All that's required to create an access point for high-speed Internet connection is a gateway or base station. Once that is set up, any computer with a wireless card can log onto the network and share its resources. Rob Flickenger built such a network in northern California, and continues to participate in network-building efforts. His nuts-and-bolts guide covers: Selecting the appropriate equipment Finding antenna sites, and building and installing antennas Protecting your network from inappropriate access New network monitoring tools and techniques (new) Regulations affecting wireless deployment (new) IP network administration, including DNS and IP Tunneling (new) His expertise, as well as his sense of humor and enthusiasm for the topic, makes Building Wireless Community Networks a very useful and readable book for anyone interested in wireless connectivity.
Book Synopsis Radiowave Propagation by : Martin P. M. Hall
Download or read book Radiowave Propagation written by Martin P. M. Hall and published by . This book was released on 1989 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is based on the IEE Vacation School on Radiowave Propagation held at the University of Surrey. Within an intensive week of study, 15 lecturers presented a range of topics covering aspects of propagation from VLF to millimetre wavelengths and from surface waves to earth/space propagation.
Download or read book Wireless Hacks written by Rob Flickenger and published by "O'Reilly Media, Inc.". This book was released on 2003 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: Continuing with the successful Hack Series, this title provides real-world working examples of how to make useful things happen with wireless equipment.
Book Synopsis Engineering Acoustics by : Michael Möser
Download or read book Engineering Acoustics written by Michael Möser and published by Springer Science & Business Media. This book was released on 2009-09-01 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: Suitable for both individual and group learning, Engineering Acoustics focuses on basic concepts and methods to make our environments quieter, both in buildings and in the open air. The author’s tutorial style derives from the conviction that understanding is enhanced when the necessity behind the particular teaching approach is made clear. He also combines mathematical derivations and formulas with extensive explanations and examples to deepen comprehension. Fundamental chapters on the physics and perception of sound precede those on noise reduction (elastic isolation) methods. The last chapter deals with microphones and loudspeakers. Moeser includes major discoveries by Lothar Cremer, including the optimum impedance for mufflers and the coincidence effect behind structural acoustic transmission. The appendix gives a short introduction on the use of complex amplitudes in acoustics.
Book Synopsis 2020 IEEE Information Theory Workshop (ITW) by : IEEE Staff
Download or read book 2020 IEEE Information Theory Workshop (ITW) written by IEEE Staff and published by . This book was released on 2021-04-11 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The scope of ITW 2020 will be in all areas of Information Theory with special emphasis on Information Theoretic aspects of Data Science
Book Synopsis Cooperative and Cognitive Satellite Systems by : Symeon Chatzinotas
Download or read book Cooperative and Cognitive Satellite Systems written by Symeon Chatzinotas and published by Academic Press. This book was released on 2015-05-27 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cooperative and Cognitive Satellite Systems provides a solid overview of the current research in the field of cooperative and cognitive satellite systems, helping users understand how to incorporate state-of-the-art communication techniques in innovative satellite network architectures to enable the next generation of satellite systems. The book is edited and written by top researchers and practitioners in the field, providing a comprehensive explanation of current research that allows users to discover future technologies and their applications, integrate satellite and terrestrial systems and services to create innovative network architectures, understand the requirements and possibilities for future satellite communications standards and protocols, and evaluate the feasibility and practical constraints involved in the deployment process. - Provides a solid overview of the current research in the field of co-operative and cognitive satellite systems - Presents concepts in multibeam and multicarrier joint processing and high performance random access schemes - Explains hybrid and dual satellite systems, cognitive broadband satellite systems, spectrum exploitation, and resource allocation
