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Book Description
Ce livre expose en détail le fonctionnement interne des réseaux informatiques, depuis le matériel (couche physique) jusqu'à la couche application. Les principes de bases sont présentés : normes, architectures courantes, câblage, codage des données, topologie, réseaux sans fil, interconnexions de réseaux... Puis l'ouvrage décrit les différents protocoles en vigueur dans les réseaux informatiques : Ethernet, Token Ring, Wi-Fi, Bluetooth, ADSL, WiMax... Les technologies ATM et autres relais de trames sont également abordés. La suite de protocoles TCP/IP est présentée en détail. Les architectures des principaux réseaux locaux (Ethernet, Token Ring, WiFi 802.11b...) sont exposées et illustrées par les concepts et techniques relatifs au transfert des informations entre les éléments d'un réseau (serveurs, stations, hubs, switchs, routeurs...). Ce livre traite aussi des réseaux sans fil. Il s'achève par une description de l'état de la recherche dans le domaine de l'optimisation des réseaux de communication. Ce support de cours, qui présente de nombreux exercices, est destiné aux étudiants préparant une licence, un master ou un diplôme d'ingénieur en informatique. Il peut aider aussi les enseignants dans la préparation de cours et de travaux dirigés. Dans le milieu industriel, l'ouvrage s'adresse aux ingénieurs et techniciens en informatique et en télécommunication et s'efforce de rapprocher la communauté de la recherche opérationnelle et les informaticiens spécialisés dans les réseaux.
Book Description
DANS L'AVENIR, LES RESEAUX METROPOLITAINS DEVRONT RELIER DIFFERENTES RESSOURCES INFORMATIQUES A L'ECHELLE D'UNE VILLE. DANS CE CADRE, LA TECHNOLOGIE OPTIQUE, QUI PERMET L'OBTENTION D'UNE BANDE PASSANTE DE L'ORDRE DE LA DIZAINE DE TERABITS/S, EST PROMETTEUSE. CETTE THESE A POUR OBJECTIF DE PROPOSER UNE ETUDE D'UN ROUTAGE PARTICULIEREMENT ADAPTE AUX RESEAUX TOUT-OPTIQUES, LE ROUTAGE PAR DEFLEXION. NOUS NOUS SOMMES PARTICULIEREMENT INTERESSE A LA QUESTION DE LA SYNCHRONISATION DANS LES RESEAUX A DEFLEXION. EN EFFET, LA TRES GRANDE MAJORITE DES ETUDES FAITES SUR LE ROUTAGE PAR DEFLEXION SUPPOSE UNE SYNCHRONISATION DU RESEAU. OR, CELLE-CI IMPOSE QUE LES PAQUETS SOIENT DE TAILLES FIXES. DE PLUS, LES SYNCHRONISATEURS DANS LES RESEAUX TOUT-OPTIQUES SONT COUTEUX, DISSIPATEUR DE PUISSANCE, ET ABAISSE LA FIABILITE DU RESEAU. NOUS AVONS MONTRE QUE DESYNCHRONISER LE RESEAU NE CHANGEAIT PAS FONDAMENTALEMENT SON COMPORTEMENT, CONTRAIREMENT A CE QUI EST SOUVENT AFFIRME, MAIS SEULEMENT SON NIVEAU DE PERFORMANCE. QUI PLUS EST, NOUS AVONS MONTRE QUE LA BAISSE DES PERFORMANCES PROVENAIT MOINS DE L'ASYNCHRONISME EN TANT QUE TEL QUE DE L'ABSENCE D'OPTIMISATION LOCALE SUR LES PREFERENCES DES PAQUETS. UNE TELLE OPTIMISATION EST TOUT A FAIT NATURELLE DANS UN RESEAU SYNCHRONE. NOUS BASANT SUR CETTE PREMIERE ETUDE, NOUS AVONS PROPOSE DEUX METHODES DE NATURES TRES DIFFERENTES POUR OPTIMISER LE ROUTAGE PAR DEFLEXION ASYNCHRONE. LA PREMIERE CONSISTE EN UN ALGORITHME DE ROUTAGE ADAPTATIF QUI PERMET D'EVITER LES ZONES SURCHARGEES DU RESEAU LORSQUE LA TOPOLOGIE EST UNE GRILLE OU UN TORE. CET ALGORITHME A ETE TESTE SOUS DIVERSES CONDITIONS, ET S'EST MONTRE EFFICACE POUR LA DEFLEXION ASYNCHRONE. LA DEUXIEME METHODE EST UN DISPOSITIF PERMETTANT D'EFFECTUER UNE OPTIMISATION LOCALE SUR LES PREFERENCES DES PAQUETS EN MODE ASYNCHRONE. CE DISPOSITIF DONNE D'EXCELLENTS RESULTATS QUI SEMBLENT ETRE DE NATURE A REMETTRE RADICALEMENT EN QUESTION LA NECESSITE DE SYNCHRONISER LES RESEAUX A DEFLEXION.
Author: Carlos A.S. Oliveira Publisher: Springer ISBN: 9781461430025 Category : Mathematics Languages : en Pages : 0
Book Description
Before the appearance of broadband links and wireless systems, networks have been used to connect people in new ways. Now, the modern world is connected through large-scale, computational networked systems such as the Internet. Because of the ever-advancing technology of networking, efficient algorithms have become increasingly necessary to solve some of the problems developing in this area. "Mathematical Aspects of Network Routing Optimization" focuses on computational issues arising from the process of optimizing network routes, such as quality of the resulting links and their reliability. Algorithms are a cornerstone for the understanding of the protocols underlying multicast routing. The main objective in the text is to derive efficient algorithms, with or without guarantee of approximation. Notes have been provided for basic topics such as graph theory and linear programming to assist those who are not fully acquainted with the mathematical topics presented throughout the book. "Mathematical Aspects of Network Routing Optimization" provides a thorough introduction to the subject of algorithms for network routing, and focuses especially on multicast and wireless ad hoc systems. This book is designed for graduate students, researchers, and professionals interested in understanding the algorithmic and mathematical ideas behind routing in computer networks. It is suitable for advanced undergraduate students, graduate students, and researchers in the area of network algorithms.
Author: Wade H. Shafer Publisher: Springer Science & Business Media ISBN: 1461573882 Category : Science Languages : en Pages : 414
Book Description
Masters Theses in the Pure and Applied Sciences was first conceived, published, SIld disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna and broader dissemination. tional publishing house to assure improved service Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 30 (thesis year 1985) a total of 12,400 theses titles from 26 Canadian and 186 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this important annual reference work.
Author: Reiner Horst Publisher: Springer Science & Business Media ISBN: 366203199X Category : Business & Economics Languages : en Pages : 735
Book Description
The main contents and character of the monograph did not change with respect to the first edition. However, within most chapters we incorporated quite a number of modifications which take into account the recent development of the field, the very valuable suggestions and comments that we received from numerous colleagues and students as well as our own experience while using the book. Some errors and misprints in the first edition are also corrected. Reiner Horst May 1992 Hoang Tuy PREFACE TO THE FIRST EDITION The enormous practical need for solving global optimization problems coupled with a rapidly advancing computer technology has allowed one to consider problems which a few years aga would have been considered computationally intractable. As a consequence, we are seeing the creation of a large and increasing number of diverse algorithms for solving a wide variety of multiextremal global optimization problems. The goal of this book is to systematically clarify and unify these diverse approaches in order to provide insight into the underlying concepts and their pro perties. Aside from a coherent view of the field much new material is presented.
Author: Sudeep Tanwar Publisher: CRC Press ISBN: 1000487814 Category : Technology & Engineering Languages : en Pages : 488
Book Description
Machine Learning in Signal Processing: Applications, Challenges, and the Road Ahead offers a comprehensive approach toward research orientation for familiarizing signal processing (SP) concepts to machine learning (ML). ML, as the driving force of the wave of artificial intelligence (AI), provides powerful solutions to many real-world technical and scientific challenges. This book will present the most recent and exciting advances in signal processing for ML. The focus is on understanding the contributions of signal processing and ML, and its aim to solve some of the biggest challenges in AI and ML. FEATURES Focuses on addressing the missing connection between signal processing and ML Provides a one-stop guide reference for readers Oriented toward material and flow with regards to general introduction and technical aspects Comprehensively elaborates on the material with examples and diagrams This book is a complete resource designed exclusively for advanced undergraduate students, post-graduate students, research scholars, faculties, and academicians of computer science and engineering, computer science and applications, and electronics and telecommunication engineering.
Author: Juan Ramiro Publisher: John Wiley & Sons ISBN: 1119960924 Category : Technology & Engineering Languages : en Pages : 283
Book Description
With the current explosion in network traffic, and mounting pressure on operators’ business case, Self-Organizing Networks (SON) play a crucial role. They are conceived to minimize human intervention in engineering processes and at the same time improve system performance to maximize Return-on-Investment (ROI) and secure customer loyalty. Written by leading experts in the planning and optimization of Multi-Technology and Multi-Vendor wireless networks, this book describes the architecture of Multi-Technology SON for GSM, UMTS and LTE, along with the enabling technologies for SON planning, optimization and healing. This is presented mainly from a technology point of view, but also covers some critical business aspects, such as the ROI of the proposed SON functionalities and Use Cases. Key features: Follows a truly Multi-Technology approach: covering not only LTE, but also GSM and UMTS, including architectural considerations of deploying SON in today’s GSM and UMTS networks Features detailed discussions about the relevant trade-offs in each Use Case Includes field results of today’s GSM and UMTS SON implementations in live networks Addresses the calculation of ROI for Multi-Technology SON, contributing to a more complete and strategic view of the SON paradigm This book will appeal to network planners, optimization engineers, technical/strategy managers with operators and R&D/system engineers at infrastructure and software vendors. It will also be a useful resource for postgraduate students and researchers in automated wireless network planning and optimization.
Author: Malek Rahoual
Author: THIERRY.. CHICH
Author: Rob Flickenger
Author: Thierry Chich
Author: David Kendall Smith
Author: David K. Smith
Author: Carlos A.S. Oliveira
Author: Wade H. Shafer
Author: Reiner Horst
Author: Sudeep Tanwar
Author: Juan Ramiro