Download or read book Perfectionnement aux techniques de transmission porteuses multiples written by LING.. QIN and published by . This book was released on 1998 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: LES TECHNIQUES DE TRANSMISSIONS MULTIPORTEUSES, EN DIVISANT UN CANAL EN UN GRAND NOMBRE DE SOUS-CANAUX, PERMETTENT DE S'AFFRANCHIR DES DISTORSIONS ET D'AJUSTER LE DEBIT BINAIRE TRANSMIS A LA DENSITE SPECTRALE DU BRUIT, ET D'ATTEINDRE AINSI DES DEBITS ELEVES SUR DES CANAUX TRES PERTURBES. DANS LE PRESENT MEMOIRE DES PERFECTIONNEMENTS SONT PROPOSES ET ETUDIES, DANS LE CADRE D'UNE EVOLUTION VERS LES BANCS DE FILTRES, QUI PERMETTENT DE SUPPRIMER LES TEMPS DE GARDE ET D'EFFECTUER UNE EGALISATION DES SOUS-CANAUX. L'APPORT PRINCIPAL DU TRAVAIL DECRIT EST L'INTRODUCTION ET L'ETUDE DE L'EGALISEUR DE SOUS-CANAL A BRANCHE UNIQUE ET DOUBLE ECHANTILLONNAGE DANS UN SYSTEME A BANC DE FILTRES. CET EGALISEUR EST EVALUE EN COMPLEXITE ET PERFORMANCE ET COMPARE A L'EGALISEUR A 3 BRANCHES CLASSIQUE. DES ESTIMATIONS DE NOMBRES DE COEFFICIENTS SIMPLES SONT PROPOSES ET VERIFIEES PAR SIMULATION. ELLES METTENT EN EVIDENCE L'IMPORTANCE DE CERTAINS PARAMETRES DU SYSTEME ET PARTICULIEREMENT DU FACTEUR D'ARRONDI DU FILTRE DE SEPARATION DES SOUS-CANAUX. DANS LA PRESENTATION DES TRAVAUX, L'ENVIRONNEMENT PTOLEMY UTILISE DANS LES SIMULATIONS EST DECRIT BRIEVEMENT ET LE PRINCIPE DES TRANSMISSIONS MULTIPORTEUSES EXISTANTES, L'OFDM, EST RAPPELE. ENSUITE, LES BANCS DE FILTRES UTILISES, FILTRES DE SYNTHESE DANS L'EMETTEUR, D'ANALYSE DANS LE RECEPTEUR, SONT DECRITS, EN DETAILLANT LES METHODES DE CALCUL DES COEFFICIENTS ET EN SOULIGNANT L'EQUIVALENCE AVEC LA DECOMPOSITION EN SOUS-BANDES D'UN SIGNAL ET SA RECONSTRUCTION. POUR L'EGALISATION DES SOUS-CANAUX, L'EGALISEUR TRANSVERSAL A BRANCHE UNIQUE ET DOUBLE ECHANTILLONNAGE PERMET D'ATTEINDRE LE MEME NIVEAU D'ERREUR RESIDUELLE QUE L'EGALISEUR TRANSVERSAL A 3 BRANCHES ET ECHANTILLONNAGE CRITIQUE. AU PRIX D'UNE COMPLEXITE GLOBALE DU SYSTEME SUPERIEUR, IL APPORTE LA ROBUSTESSE AU DECALAGE DES INSTANTS D'ECHANTILLONNAGE DANS LE RECEPTEUR. LES RESULTATS PRESENTES DEVRAIENT AIDER LES CONCEPTEURS DE SYSTEMES MULTIPORTEUSES A DETERMINER LA MEILLEURE APPROCHE POUR LEUR APPLICATION ET LES GUIDER DANS LES CHOIX DES PARAMETRES.

Download or read book APPLICATION DES TRANSMISSIONS A PORTEUSES MULTIPLES AUX COMMUNICATIONS RADIOMOBILES written by Ralf Haas and published by . This book was released on 1996 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'OBJECTIF DE CE TRAVAIL EST DE MONTRER LA POSSIBILITE DE L'APPLICATION DE LA MODULATION MULTIPORTEUSE A LA COUCHE PHYSIQUE D'UN SYSTEME DE COMMUNICATIONS RADIOMOBILES. LES DOMAINES DE RECHERCHE COUVERTS PAR CETTE THESE SONT NOTAMMENT L'EFFICACITE SPECTRALE, LA MISE EN FORME DU SIGNAL, L'ESTIMATION DU CANAL ET LE PARTAGE DE LA RESSOURCE. UNE ETUDE DE L'EFFICACITE SPECTRALE D'UN SYSTEME CELLULAIRE DANS L'HYPOTHESE D'UNE TRANSMISSION A PORTEUSES MULTIPLES NOUS PERMET DE TROUVER L'EFFICACITE SPECTRALE OPTIMALE D'UNE MODULATION CODEE ET DE COMPARER LES DIFFERENTES ARCHITECTURES CELLULAIRES. NOUS AVONS AUSSI OPTIMISE L'IMPULSION ELEMENTAIRE SERVANT A CONSTRUIRE LE SIGNAL MULTIPORTEUSE. ELLE DOIT VERIFIER CERTAINES CONDITIONS QUI NOUS AMENENT A UNE MISE EN FORME MIEUX ADAPTEE QUE LES SOLUTIONS CLASSIQUES. DANS UN SYSTEME RADIOMOBILES, L'INFORMATION DOIT ETRE STRUCTUREE EN TRAMES POUR DES PROBLEMES DE PARTAGE DE LA RESSOURCE. UNE DETECTION COHERENTE EXIGE AINSI L'ESTIMATION DU CANAL PAR BLOCS, INDEPENDAMMENT DE L'ESTIMATION QUI A ETE FAITE SUR LE BLOC PRECEDENT. ON MONTRE LES BONNES PERFORMANCES D'UN SCHEMA D'ESTIMATION DU CANAL PAR BLOCS BASE SUR DES SYMBOLES PILOTES. L'ACCES MULTIPLE ALEATOIRE PERMET A CHAQUE UTILISATEUR D'ACCEDER AU RESEAU FIXE PAR VOIE RADIO SANS EFFORT SUPPLEMENTAIRE DE SIGNALISATION AVEC UNE STATION DE BASE. LES PREMIERES EVALUATIONS THEORIQUES CORROBOREES PAR LES RESULTATS DE SIMULATIONS PERMETTENT DE DEFINIR UN CADRE POUR LA CONSTRUCTION D'UN SCHEMA D'ACCES MULTIPLE BASE SUR LES TRANSMISSIONS MULTIPORTEUSES. LES RESULTATS OBTENUS AU COURS DES RECHERCHES SUR CE SUJET MONTRENT QUE LA MODULATION A PORTEUSES MULTIPLES EST UN BON CANDIDAT POUR LA COUCHE PHYSIQUE D'UN SYSTEME DE COMMUNICATIONS RADIOMOBILES.

Download or read book Design Theory written by Pascal Le Masson and published by Springer. This book was released on 2017-04-06 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook presents the core of recent advances in design theory and its implications for design methods and design organization. Providing a unified perspective on different design methods and approaches, from the most classic (systematic design) to the most advanced (C-K theory), it offers a unique and integrated presentation of traditional and contemporary theories in the field. Examining the principles of each theory, this guide utilizes numerous real life industrial applications, with clear links to engineering design, industrial design, management, economics, psychology and creativity. Containing a section of exams with detailed answers, it is useful for courses in design theory, engineering design and advanced innovation management. "Students and professors, practitioners and researchers in diverse disciplines, interested in design, will find in this book a rich and vital source for studying fundamental design methods and tools as well as the most advanced design theories that work in practice". Professor Yoram Reich, Tel Aviv University, Editor-in-Chief, Research In Engineering Design. "Twenty years of research in design theory and engineering have shown that training in creative design is indeed possible and offers remarkably operational methods - this book is indispensable for all leaders and practitioners who wish to strengthen theinnovation capacity of their company." Pascal Daloz, Executive Vice President, Dassault Systèmes

Download or read book Philosophy manual a South South perspective written by Chanthalangsy, Phinith and published by UNESCO Publishing. This book was released on 2014-12-31 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Innovate Bristol written by Sven Boermeester and published by . This book was released on 2019-12 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Innovate Bristol highlights and celebrates those companies and individuals that are actively working at building a better tomorrow for all. Innovation Ecosystems thrive through the involvement and support of companies and individuals from all industries, which is why the Innovate series not only focuses on the innovators but also those people whom the Innovation Ecosystem, would not be able to thrive without.

Download or read book Making Better International Law The International Law Commission at 50 Proceedings of the United Nations Colloquium on Progressive Development and Codification of International Law written by and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ICREEC 2019 written by Ahmed Belasri and published by Springer Nature. This book was released on 2020-06-10 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights peer reviewed articles from the 1st International Conference on Renewable Energy and Energy Conversion, ICREEC 2019, held at Oran in Algeria. It presents recent advances, brings together researchers and professionals in the area and presents a platform to exchange ideas and establish opportunities for a sustainable future. Topics covered in this proceedings, but not limited to, are photovoltaic systems, bioenergy, laser and plasma technology, fluid and flow for energy, software for energy and impact of energy on the environment.

Download or read book Dictionary of Building and Civil Engineering written by Don Montague and published by Taylor & Francis. This book was released on 1996 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dual-language dictionary lists over 20,000 specialist terms in both French and English, covering architecture, building, engineering and property terms. It meets the needs of all building professionals working on projects overseas. It has been comprehensively researched and compiled to provide an invaluable reference source in an increasingly European marketplace.

Download or read book Disaster risk reduction in school curricula case studies from thirty countries written by and published by UNESCO. This book was released on 2012 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Recueil Des Trait s written by and published by . This book was released on 1947 with total page 842 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Accounting for Culture written by Caroline Andrew and published by University of Ottawa Press. This book was released on 2005-03-30 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many scholars, practitioners, and policy-makers in the cultural sector argue that Canadian cultural policy is at a crossroads: that the environment for cultural policy-making has evolved substantially and that traditional rationales for state intervention no longer apply. The concept of cultural citizenship is a relative newcomer to the cultural policy landscape, and offers a potentially compelling alternative rationale for government intervention in the cultural sector. Likewise, the articulation and use of cultural indicators and of governance concepts are also new arrivals, emerging as potentially powerful tools for policy and program development. Accounting for Culture is a unique collection of essays from leading Canadian and international scholars that critically examines cultural citizenship, cultural indicators, and governance in the context of evolving cultural practices and cultural policy-making. It will be of great interest to scholars of cultural policy, communications, cultural studies, and public administration alike.

Download or read book NATO Glossary of Terms and Definitions written by North Atlantic Treaty Organization and published by CreateSpace. This book was released on 2013-03-08 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: NATO Glossary of terms and definitions (English and French). Listing terms of military significance and their definitions for use in NATO.

Download or read book Strategic Management of Innovation and Design written by Pascal Le Masson and published by Cambridge University Press. This book was released on 2010-09-09 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is now widespread agreement that innovation holds the key to future economic and social prosperity in developed countries. Experts studying contemporary capitalism also agree that the battle against unemployment and relocations can only be won through innovation. But what kind of innovation is required and what is the best way to manage, steer and organize it? Grounded on experiences of innovative firms and based on recent design theories, this book argues that instead of relying on traditional R&D and project management techniques, the strategic management of innovation must be based on innovative design activities. It analyses and explains new management principles and techniques that deal with these activities, including innovation fields, lineages, C-K (Concept-Knowledge) diagrams and design spaces. The book is ideal for advanced courses in innovation management in industrial design schools, business schools, engineering schools, as well as managers looking to improve their practice.

Download or read book Intercultural Competence written by Gerhard Neuner and published by Council of Europe. This book was released on 2003-01-01 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book FAO Policy on Gender Equality written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Organization of the UN (FAO). This book was released on 2013 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The FAO Policy on Gender Equality provides a framework that guides the Organization's efforts to achieve gender equality in all its technical work and assesses results. The policy outlines FAO's goal and objectives related to gender equality and delineates an accountability structure for ensuring policy oversight and achievement of results."--Publisher's description.

Download or read book Knowing and Teaching Elementary Mathematics written by Liping Ma and published by Routledge. This book was released on 2010-03-26 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies of teachers in the U.S. often document insufficient subject matter knowledge in mathematics. Yet, these studies give few examples of the knowledge teachers need to support teaching, particularly the kind of teaching demanded by recent reforms in mathematics education. Knowing and Teaching Elementary Mathematics describes the nature and development of the knowledge that elementary teachers need to become accomplished mathematics teachers, and suggests why such knowledge seems more common in China than in the United States, despite the fact that Chinese teachers have less formal education than their U.S. counterparts. The anniversary edition of this bestselling volume includes the original studies that compare U.S and Chinese elementary school teachers’ mathematical understanding and offers a powerful framework for grasping the mathematical content necessary to understand and develop the thinking of school children. Highlighting notable changes in the field and the author’s work, this new edition includes an updated preface, introduction, and key journal articles that frame and contextualize this seminal work.

Download or read book Child Friendly Schools Manual written by and published by UNICEF. This book was released on 2009 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Child-Friendly Schools (CFS) Manual was developed during three-and-a-half years of continuous work, involving the United Nations Children's Fund education staff and specialists from partner agencies working on quality education. It benefits from fieldwork in 155 countries and territories, evaluations carried out by the Regional Offices and desk reviews conducted by headquarters in New York. The manual is a part of a total resource package that includes an e-learning package for capacity-building in the use of CFS models and a collection of field case studies to illustrate the state of the art in child-friendly schools in a variety of settings.