Cet ouvrage de synthèse présente les principes, les technologies et le fonctionnement des systèmes et réseaux de télécommunications. Il s'adresse aux étudiants, ingénieurs et techniciens développant ou utilisant des systèmes de télécommunications, désireux de comprendre ces technologies, de dialoguer avec des spécialistes et d'aborder des ouvrages et articles spécialisés. La première partie décrit les principes généraux de la transmission des informations et les principes et techniques des modulations et transmissions numériques. Les systèmes de communication par câbles, fibres optiques et ondes radio (faisceaux hertziens, satellites, mobiles) sont ensuite traités en abordant à la fois les aspects propagation, composants et système. Ce livre contient également une synthèse sur l'ensemble des réseaux de communication (accès, longue distance, réseaux de données, ATM, Internet et réseaux locaux) ainsi qu'un chapitre sur les technologies de la télévision et du multimédia. Cet ouvrage intègre les derniers développements dans les domaines du traitement numérique, des mobiles, de l'ADSL, du très haut débit et des nouvelles technologies audiovisuelles sans ignorer les récentes et rapides évolutions du contexte économique réglementaire.

This book is based on both industrial and academic research efforts in which a number of recent advancements and rare insights into telecommunication systems are well presented. The volume is organized into four parts: "Telecommunication Protocol, Optimization, and Security Frameworks", "Next-Generation Optical Access Technologies", "Convergence of Wireless-Optical Networks" and "Advanced Relay and Antenna Systems for Smart Networks." Chapters within these parts are self-contained and cross-referenced to facilitate further study.

This book provides a first introduction to the subject of telecommunications suit able for first and second year undergraduates following degree or similar courses in electronic engineering. There are very few specific prerequisites other than a general background in electric circuit principles and a level of mathematical maturity consistent with entry to engineering courses in British universities. The intention is to provide a broad perspective of modern telecommunication principles and applications. Following a general overview of telecommunications, a thorough, albeit introductory, treatment is provided of underlying principles such as signal representation and analysis, sampling, analogue and digital trans of several mission, modulation and coding. The book concludes with a description important systems applications which serve as case studies to illustrate further the principles introduced and demonstrate their application in a practical context. Many people have contributed, directly and indirectly, to this book. I am espe cially grateful to Professor Kel Fidler of the Open University for suggesting that I write the book and for the support and guidance he has provided throughout the endeavour. The Telecommunications Research Group of the Department of Elec trical Engineering Science at the University of Essex has provided a stimulating environment in which to develop my appreciation of telecommunication systems and in particular Professor Ken Cattermole has influenced my thinking greatly.

Telecommunication Systems and Technologies theme is a component of Encyclopedia of Physical Sciences, Engineering and Technology Resources in the global Encyclopedia of Life Support Systems (EOLSS), which is an integrated compendium of twenty one Encyclopedias. Telecommunication systems are emerging as the most important infrastructure asset to enable business, economic opportunities, information distribution, culture dissemination and cross-fertilization, and social relationships. As any crucial infrastructure, its design, exploitation, maintenance, and evolution require multi-faceted know-how and multi-disciplinary vision skills. The theme is structured in four main topics: Fundamentals of Communication and Telecommunication Networks; Telecommunication Technologies; Management of Telecommunication Systems/Services; Cross-Layer Organizational Aspects of Telecommunications, which are then expanded into multiple subtopics, each as a chapter. These two volumes are aimed at the following five major target audiences: University and College students Educators, Professional practitioners, Research personnel and Policy analysts, managers, and decision makers and NGOs

A panel of renowned experts from around the world contributed to this authoritative handbook that covers the essential aspects of this most dynamic field of communications and networking activity. Edited by Dr. Kornel Terplan and Patricia Morreale - well known authorities in telecommunications- this important new handbook provides basic principles and definitions, details the tremendous advances in technology, outlines implementation techniques, and discusses the outstanding issues and key challenges faced by communications and networking specialists. The telecommunications topics addressed include: o Basic principles o Services on broadband networks o Signal processing and coding schemes o Mobile and wireless networks o DSL technologies o Digital video and multimedia o Quality of service o Regulation o Standards o Emerging technologies Exhaustive in scope and packed with diagrams, tables, and illustrations, The Telecommunications Handbook is an indispensable, detailed reference for engineers, analysts, managers, and students involved in a wide range of telecommunication and networking activities.