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Contributions Au Controle De Flux Et Des Congestions Dans Les Reseaux Temporels Asynchrones A Haute Vitesse
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Book Synopsis CONTRIBUTIONS AU CONTROLE DE FLUX ET DES CONGESTIONS DANS LES RESEAUX TEMPORELS ASYNCHRONES A HAUTE VITESSE by : PIERRE-ANDRE.. FORIEL
Download or read book CONTRIBUTIONS AU CONTROLE DE FLUX ET DES CONGESTIONS DANS LES RESEAUX TEMPORELS ASYNCHRONES A HAUTE VITESSE written by PIERRE-ANDRE.. FORIEL and published by . This book was released on 1996 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: LES TRAVAUX PRESENTES DANS CE MEMOIRE PORTENT SUR LE CONTROLE DE FLUX ET DES CONGESTIONS DANS LES RESEAUX TEMPORELS ASYNCHRONES A HAUTE VITESSE (ATM ET AUTRES). LA PREMIERE PARTIE EST UNE INTRODUCTION AU DOMAINE QUI PRESENTE LE PROBLEME MAJEUR QUE CONSTITUE LA GESTION DU TRAFIC. LA DEUXIEME PARTIE TRAITE LE CAS DU TRAFIC ETABLI EN MODE RESERVE (CBR, VBR). DEUX APPROCHES SONT PROPOSEES: LA PREMIERE EST BASEE SUR UN MECANISME DE CONTROLE ADAPTATIF, DONT NOUS AMELIORONS LES PERFORMANCES TOUT EN REDUISANT SA COMPLEXITE D'IMPLEMENTATION, AFIN DE GARANTIR UNE QUALITE DE SERVICE CONSTANTE QUELLES QUE SOIENT LES EVOLUTIONS DES PARAMETRES DE TRAFIC DE LA SOURCE CONTROLEE. LA SECONDE SE SITUE DANS LE CONTEXTE DU CONTROLE DU DEBIT CRETE D'UNE CONNEXION ATM, OU NOUS PROPOSONS UNE NOUVELLE CLASSE DE METHODES DE LISSAGE PERMETTANT DE MINIMISER LA GIGUE RESIDUELLE D'UN FLOT DE CELLULES EN SORTIE D'UN NUD DE COMMUTATION, PAR LE TRUCHEMENT D'UNE FONCTION D'ORDONNANCEMENT. UN ALGORITHME APPARTENANT A CETTE FAMILLE EST PROPOSE ET COMPARE A DEUX ALGORITHMES EXISTANTS. LA TROISIEME PARTIE ABORDE LE PROBLEME DU CONTROLE DE FLUX ET DES CONGESTIONS DANS LE CADRE DU TRAFIC ETABLI EN MODE NON-RESERVE (ABR, UBR). UNE SYNTHESE DES METHODES PERMETTANT D'ELABORER UN CONTROLE DE FLUX POUR CE TYPE DE TRAFIC EST TOUT D'ABORD PRESENTEE. LES AVANTAGES ET INCONVENIENTS DE CHACUNE D'ELLES SONT MIS EN EXERGUE A TRAVERS L'ETUDE COMPARATIVE DES ALGORITHMES IMPLEMENTES AU NIVEAU DES NUDS DE COMMUTATION DANS LE CADRE DU SERVICE ABR ; UNE ATTENTION PARTICULIERE EST PORTEE SUR UN DE CES ALGORITHMES QUI NOUS SEMBLE ETRE PARMI LES PLUS INTERESSANTS DANS LE COMPROMIS PERFORMANCE/COMPLEXITE REALISE. ENFIN, NOUS PROPOSONS DEUX METHODES POUR ELABORER UN CONTROLE DE FLUX DANS LE CADRE DU SERVICE UBR, QUI TIENNENT COMPTE A LA FOIS DES CAPACITES DISPONIBLES AU SEIN DU RESEAU MAIS EGALEMENT, GRACE A DES STATISTIQUES RELEVEES AU NIVEAU DU MECANISME DE CONTROLE, DES BESOINS REELS DES SOURCES DE TRAFIC
Book Synopsis Controle de congestion dans les reseaux temporels asynchrones by : Fabrice Guillemin
Download or read book Controle de congestion dans les reseaux temporels asynchrones written by Fabrice Guillemin and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis COMPRESSION ET TRANSMISSION DE SIGNAUX VIDEO SUR DES RESEAUX HAUT DEBIT AVEC CONTROLE DE CONGESTION DU FLUX DE DONNEES by : PAOLO.. SCOTTON
Download or read book COMPRESSION ET TRANSMISSION DE SIGNAUX VIDEO SUR DES RESEAUX HAUT DEBIT AVEC CONTROLE DE CONGESTION DU FLUX DE DONNEES written by PAOLO.. SCOTTON and published by . This book was released on 1993 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: CE TRAVAIL DE THESE S'INSCRIT DANS LE DOMAINE DE LA COMPRESSION ET LA TRANSMISSION DE SIGNAUX VIDEO SUR LES RESEAUX ASYNCHRONES HAUT DEBIT EMERGEANTS. LA PREMIERE PARTIE DU MEMOIRE EST CONSACREE A L'ETUDE DES PROBLEMES DE TRANSPORT SUR LES FUTURS RESEAUX ASYNCHRONES A HAUT DEBIT, ET DEBUTE PAR LA PRESENTATION DU MODE DE TRANSFERT ATM (ASYNCHRONOUS TRANSFER MODE), QUI SERA LE MODE DE TRANSFERT PRIVILEGIE DE CES RESEAUX. VIENT ENSUITE UNE ETUDE DES DIFFERENTES SOURCES (DONNEES, VOIX, IMAGE) ET DES CONTRAINTES QU'ELLES IMPOSENT. PUIS NOUS PRESENTONS LES PROBLEMES DE TRANSPORT INHERENTS A LA VIDEO COMPRIMEE. CE QUI NOUS AMENE A PROPOSER UN PROTOCOLE DE TRANSPORT AU NIVEAU CODEUR/DECODEUR PERMETTANT DE CONTROLER LES PROBLEMES DE DIVERGENCE DES BOUCLES DE PREDICTION. CE PROTOCOLE PERMET, EN OUTRE, UNE TRANSMISSION EN MODE DEGRADE EN CAS DE CONGESTION GRAVE DU RESEAU. LA FIN DE CETTE PREMIERE PARTIE EST CONSACREE AUX ALGORITHMES DE ROUTAGE DANS LES RESEAUX HAUT DEBIT AVEC CIRCUITS VIRTUELS. DANS CE CAS, IL EST PARFOIS IMPORTANT DE POUVOIR ETABLIR UN APPEL EN UN TEMPS RELATIVEMENT BREF. CE QUI NOUS A CONDUIT A PROPOSER UNE TECHNIQUE DE HIERARCHISATION AUTOMATIQUE DE RESEAU PERMETTANT D'AMELIORER DE FACON SENSIBLE LES PERFORMANCES DE L'ALGORITHME DE BELLMANN-FORD MODIFIE. L'ETUDE DU CODAGE DE SOURCES VIDEO ADAPTE A LA TRANSMISSION SUR DES RESEAUX HAUT DEBIT FAIT L'OBJET DE LA DEUXIEME PARTIE. APRES UNE SYNTHESE DES PRINCIPALES TECHNIQUES NUMERIQUES DE COMPRESSION, NOUS ETUDIONS PLUS PARTICULIEREMENT DEUX CODEURS VIDEO UTILISANT DES TECHNIQUES DE CODAGE EN SOUS-BANDES, A SAVOIR LE CODEUR TRIDIMENSIONNEL DE G. KARLSSON ET M. VETTERLI, ET UN CODEUR HYBRIDE CODAGE EN SOUS-BANDES/CODAGE PREDICTIF. UNE NOUVELLE TECHNIQUE D'ALLOCATION DES RESSOURCES BINAIRES PERMETTANT UNE QUANTIFICATION MULTIRESOLUTION DES SOUS-BANDES EST ALORS PROPOSEE. ELLE PERMET D'OBTENIR UN CODEUR REALISANT UN BON COMPROMIS QUALITE/DEBIT/COMPLEXITE. CE CODEUR EST DE PLUS TRES BIEN ADAPTE A LA TRANSMISSION SUR DES RESEAUX HAUT DEBIT, CAR HIERARCHISE ET A DEBIT VARIABLE. LA DERNIERE PARTIE DU MEMOIRE TRAITE DES PROBLEMES DU CONTROLE DES CONGESTIONS DANS LES RESEAUX HAUT DEBIT. APRES UNE INTRODUCTION AU DOMAINE, NOUS PRESENTONS ET VALIDONS UNE IMPLEMENTATION PARTICULIERE D'UN MECANISME DE CONTROLE PREVENTIF: LE LEAKY BUCKET. NOUS ETUDIONS ENSUITE UNE VERSION ADAPTATIVE DE CE MECANISME INTRODUITE PAR L. GUN ET T. TEDIJANTO. NOUS Y APPORTONS UNE MODIFICATION SOUS LA FORME D'UNE TECHNIQUE DE DECISION D'ADAPTATION PAR FENETRES QUI AMELIORE LES PERFORMANCES TOUT EN SIMPLIFIANT CONSIDERABLEMENT L'IMPLEMENTATION. CETTE PARTIE DU MEMOIRE S'ACHEVE SUR L'ETUDE DU COMPORTEMENT DU LEAKY BUCKET ADAPTATIF SOUMIS A UN TRAFIC GENERE PAR UNE SOURCE VIDEO COMPRIMEE
Book Synopsis STABILITE DES SYSTEMES DYNAMIQUES A EVENEMENTS DISCRETS APPLICATION AU CONTROLE DE FLUX DANS LES RESEAUX DE TELECOMMUNICATION by : THOMAS.. BONALD
Download or read book STABILITE DES SYSTEMES DYNAMIQUES A EVENEMENTS DISCRETS APPLICATION AU CONTROLE DE FLUX DANS LES RESEAUX DE TELECOMMUNICATION written by THOMAS.. BONALD and published by . This book was released on 1999 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: LA THESE COMPORTE UNE PARTIE THEORIQUE SUR LA STABILITE DES SYSTEMES DYNAMIQUES A EVENEMENTS DISCRETS, ET UNE PARTIE PLUS APPLIQUEE SUR LE CONTROLE DE FLUX DANS LES RESEAUX DE TELECOMMUNICATION, QUI A MOTIVE LA PREMIERE ET EN UTILISE LES TECHNIQUES. DANS LA PREMIERE PARTIE, ON S'INTERESSE TOUT D'ABORD A L'APPROCHE MARKOVIENNE OU APPROCHE EN ESPACE DE LA STABILITE DES SYSTEMES A EVENEMENTS DISCRETS. ON APPLIQUE NOTAMMENT LA METHODE DITE DES LIMITES FLUIDES A UN RESEAU DE FILES D'ATTENTE MIXTE, A LA FOIS OUVERT ET FERME. ON CONSIDERE ENSUITE L'APPROCHE TRAJECTORIELLE OU APPROCHE EN TEMPS DE LA STABILITE. DANS UN PREMIER TEMPS, ON PRESENTE LA REGLE DE SATURATION POUR LES SYSTEMES MONOTONES-HOMOGENES ET SEPARABLES, QUI S'APPLIQUE PAR EXEMPLE AUX RESEAUX DE FILES D'ATTENTE A UNE SEULE CLASSE DE CLIENTS. ON DEMONTRE ENSUITE LA REGLE DE SATURATION EN BOUCLE FERMEE POUR LES SYSTEMES MONOTONES-INVARIANTS, QUI S'APPLIQUE A CERTAINS RESEAUX DE FILES D'ATTENTE A PLUSIEURS CLASSES DE CLIENTS. LA DEUXIEME PARTIE SE CONSACRE AU CONTROLE DE FLUX DANS LES RESEAUX DE TELECOMMUNICATION. ON PRESENTE TOUT D'ABORD LES OBJECTIFS DU CONTROLE DE FLUX ET LES PRINCIPAUX MECANISMES UTILISES. ON ETUDIE ENSUITE LES PERFORMANCES DU CONTROLE DE FLUX A FENETRE STATIQUE. ON CONSIDERE NOTAMMENT L'INFLUENCE DES CARACTERISTIQUES STATISTIQUES DU TRAFIC TRANSVERSE SUR L'EFFICACITE DU CONTROLE DE FLUX. ENFIN, ON S'INTERESSE AU CONTROLE DE FLUX A FENETRE DYNAMIQUE, UTILISE PAR LE PROTOCOLE TCP DANS L'INTERNET. ON ETUDIE L'ALLOCATION ET L'UTILISATION DES RESSOURCES DU RESEAU REALISEES PAR LES VERSIONS RENO ET VEGAS DE TCP.
Book Synopsis MECANISMES DE CONTROLE DE FLUX POUR L'INTERCONNEXION DE RESEAUX EN ENVIRONNEMENT HAUT DEBIT by : Christian Roche
Download or read book MECANISMES DE CONTROLE DE FLUX POUR L'INTERCONNEXION DE RESEAUX EN ENVIRONNEMENT HAUT DEBIT written by Christian Roche and published by . This book was released on 1995 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: UN DES PREMIERS SERVICES ATTENDUS DES RESEAUX NUMERIQUES A INTEGRATION DE SERVICES A LARGE BANDE SERA PROBABLEMENT L'INTERCONNEXION DES RESEAUX LOCAUX ET METROPOLITAINS EXISTANTS. DU FAIT DES CARACTERISTIQUES SPECIFIQUES DE CES RESEAUX, CE SERVICE POSE D'IMPORTANTS PROBLEMES DE GESTION DE RESSOURCES. NOUS NOUS INTERESSONS PARTICULIEREMENT ICI A UN PROBLEME QUI APPARAIT AU NIVEAU DES ROUTEURS D'INTERCONNEXION AUX EXTREMITES DU RESEAU FEDERATEUR, QUE NOUS DESIGNONS SOUS LE TERME DE PROBLEME DES FLOTS CONVERGENTS. NOUS PROPOSONS UN MECANISME ORIGINAL DE CONTROLE DE FLUX BOUCLE QUI APPORTE UNE SOLUTION A CE PROBLEME EN AMENANT LE SYSTEME A UN POINT DE FONCTIONNEMENT INTERESSANT. CE MECANISME GENERALISE ET AMELIORE PLUSIEURS TECHNIQUES CLASSIQUES MISES EN UVRE DANS LES RESEAUX ACTUELS. UNE ETUDE ANALYTIQUE NOUS PERMET DE DETERMINER LES VALEURS OPTIMALES DES PARAMETRES QUI CONTROLENT LE COMPORTEMENT DE L'ALGORITHME DE COMMANDE. LES SERIES D'ESSAIS PAR SIMULATION CONFIRMENT LES RESULTATS OBTENUS ANALYTIQUEMENT ET MONTRENT QUE DES GAINS DE PERFORMANCE IMPORTANTS PEUVENT ETRE ATTENDUS DE CE TYPE DE MECANISME. NOUS DISCUTONS FINALEMENT DES POSSIBILITES D'IMPLEMENTATION REELLE ET DE COOPERATION AVEC D'AUTRES TECHNIQUES EMPLOYEES DANS LES RESEAUX ATM
Author :International Livestock Research Institute Publisher :ILRI (aka ILCA and ILRAD) ISBN 13 :9789291460038 Total Pages :268 pages Book Rating :4.4/5 (6 download)
Book Synopsis Livestock Policy Analysis by : International Livestock Research Institute
Download or read book Livestock Policy Analysis written by International Livestock Research Institute and published by ILRI (aka ILCA and ILRAD). This book was released on 1995-01-01 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Policy concepts; Identification of policy issues; Production systems, supply and demand; Market, price and trade policies; Marketing and distribution systems; Budget and manpower planning; Land tenure police for the livestock sector; Policy analysis report writing and communication; Livestock production and marketing in alphabeta - a case study.
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 Principles of Radar and Sonar Signal Processing by : Chevalier François Le
Download or read book Principles of Radar and Sonar Signal Processing written by Chevalier François Le and published by Artech House. This book was released on 2002 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book Iptables Tutorial 1.2.2 written by and published by Lulu.com. This book was released on with total page 461 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Signal Processing for Communications by : Paolo Prandoni
Download or read book Signal Processing for Communications written by Paolo Prandoni and published by Collection Savoir suisse. This book was released on 2008-06-17 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: With a novel, less classical approach to the subject, the authors have written a book with the conviction that signal processing should be taught to be fun. The treatment is therefore less focused on the mathematics and more on the conceptual aspects, the idea being to allow the readers to think about the subject at a higher conceptual level, thus building the foundations for more advanced topics. The book remains an engineering text, with the goal of helping students solve real-world problems. In this vein, the last chapter pulls together the individual topics as discussed throughout the book into an in-depth look at the development of an end-to-end communication system, namely, a modem for communicating digital information over an analog channel.
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.
Download or read book River Ice Jams written by S. Beltaos and published by Water Resources Publication. This book was released on 1995 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Physics of Information Technology by : Neil Gershenfeld
Download or read book The Physics of Information Technology written by Neil Gershenfeld and published by Cambridge University Press. This book was released on 2000-10-16 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Physics of Information Technology explores the familiar devices that we use to collect, transform, transmit, and interact with electronic information. Many such devices operate surprisingly close to very many fundamental physical limits. Understanding how such devices work, and how they can (and cannot) be improved, requires deep insight into the character of physical law as well as engineering practice. The book starts with an introduction to units, forces, and the probabilistic foundations of noise and signalling, then progresses through the electromagnetics of wired and wireless communications, and the quantum mechanics of electronic, optical, and magnetic materials, to discussions of mechanisms for computation, storage, sensing, and display. This self-contained volume will help both physical scientists and computer scientists see beyond the conventional division between hardware and software to understand the implications of physical theory for information manipulation.
Author :Norman Carl Gridley Publisher :Saskatoon, Sask. : National Hydrology Research Institute ISBN 13 : Total Pages :184 pages Book Rating :4.3/5 (121 download)
Book Synopsis Environmental Aspects of River Ice by : Norman Carl Gridley
Download or read book Environmental Aspects of River Ice written by Norman Carl Gridley and published by Saskatoon, Sask. : National Hydrology Research Institute. This book was released on 1993 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Recognizing the lack of comprehensive information on river ice environmental problems, the National Research Council of Canada's Subcommittee on Hydraulics of Ice Covered Rivers recommended in 1988 that a Task Force be form to investigate the environmental aspects of river ice. The Task Force has assembled this state-of-the-art report in order to document current knowledge and develop recommendations for research. ... This state-of-the-art report comprises contributions by Task Force members and is organized under three major chapters: physical, chemical and biological. The editors have re-arranged original material and inserted new text to enhance the degree of coverage, to maximize consistency among authors' presentations, and to better link the various sections. A subsequent publication "Proceedings of the Workshop on Environmental Aspects of River Ice" will be published following the release of this science report at the workshop of the same name"--Introduction, pages 1-2.
