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Author: Danilo Zanatta Filho
Publisher:
ISBN:
Category :
Languages : fr
Pages : 20
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Book Description
Ce document traite de l'utilisation en émission d'un réseau d'antennes à la station de base d'un système de communication radio-mobile. On recherche des méthodes qui allient diversité et formation de voie pour mieux exploiter le réseau d'antennes. Dans ce but, on propose un schéma de transmission composé d'un précodeur intercalé entre la diversité de transmission et le réseau d'antennes. A partir de ce schéma, on propose deux méthodes pour obtenir ce précodeur dans le cas mono-utilisateur, une basée sur la minimisation de la variance de la puissance reçue et la deuxième basée directement sur la minimisation du taux d'erreur. On traite aussi le cas multi-utilisateur, dans lequel on propose l'adaptation conjointe des précodeurs pour minimiser la puissance totale d'émission, tout en respectant les TEB cibles des utilisateurs. Comparées aux techniques classiques, les nouvelles méthodes permettent d'allier diversité et formation de voie et obtient en retour des meilleures performances.
Author: Danilo Zanatta Filho
Publisher:
ISBN:
Category :
Languages : fr
Pages : 20
Get Book Here
Book Description
Ce document traite de l'utilisation en émission d'un réseau d'antennes à la station de base d'un système de communication radio-mobile. On recherche des méthodes qui allient diversité et formation de voie pour mieux exploiter le réseau d'antennes. Dans ce but, on propose un schéma de transmission composé d'un précodeur intercalé entre la diversité de transmission et le réseau d'antennes. A partir de ce schéma, on propose deux méthodes pour obtenir ce précodeur dans le cas mono-utilisateur, une basée sur la minimisation de la variance de la puissance reçue et la deuxième basée directement sur la minimisation du taux d'erreur. On traite aussi le cas multi-utilisateur, dans lequel on propose l'adaptation conjointe des précodeurs pour minimiser la puissance totale d'émission, tout en respectant les TEB cibles des utilisateurs. Comparées aux techniques classiques, les nouvelles méthodes permettent d'allier diversité et formation de voie et obtient en retour des meilleures performances.
Author: Danilo Zanatta
Publisher: Omniscriptum
ISBN: 9786131517068
Category :
Languages : fr
Pages : 160
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Book Description
Ce livre traite de l''utilisation en émission d''un réseau d''antennes à la station de base d''un système de communication radio-mobile. En réception, les solutions pour exploiter le réseau d''antennes sont désormais bien établies. En émission, par contre, le problème reste ouvert. Deux approches sont possibles: exploiter les antennes en formation de voie ou en diversité. Les deux approches s''opposent de par les hypothèses sur la corrélation des canaux en fonction de l''environnement. On traite le problème dans sa globalité en alliant diversité et formation de voie pour mieux exploiter le réseau d''antennes. Dans le cas mono- utilisateur, on propose deux approches, l''une basée sur la minimisation de la variance de la puissance reçue et l''autre directement sur la minimisation du taux d''erreur bit (TEB). Dans le cas multi-utilisateurs, pour lequel il n''existe pas de technique de diversité de transmission, on propose une approche basée sur la minimisation de la puissance totale d''émission tout en assurant les TEB des utilisateurs. Comparée aux techniques classiques, la nouvelle approche introduit de la diversité de transmission et obtient en retour de meilleures performances.
Author: Canada. Industry Canada
Publisher:
ISBN:
Category : Language Arts & Disciplines
Languages : en
Pages : 56
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Book Description
Author: Martin Lindstrom
Publisher: Currency
ISBN: 0385523890
Category : Business & Economics
Languages : en
Pages : 274
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Book Description
NEW YORK TIMES BESTSELLER • “A fascinating look at how consumers perceive logos, ads, commercials, brands, and products.”—Time How much do we know about why we buy? What truly influences our decisions in today’s message-cluttered world? In Buyology, Martin Lindstrom presents the astonishing findings from his groundbreaking three-year, seven-million-dollar neuromarketing study—a cutting-edge experiment that peered inside the brains of 2,000 volunteers from all around the world as they encountered various ads, logos, commercials, brands, and products. His startling results shatter much of what we have long believed about what captures our interest—and drives us to buy. Among the questions he explores: • Does sex actually sell? • Does subliminal advertising still surround us? • Can “cool” brands trigger our mating instincts? • Can our other senses—smell, touch, and sound—be aroused when we see a product? Buyology is a fascinating and shocking journey into the mind of today's consumer that will captivate anyone who's been seduced—or turned off—by marketers' relentless attempts to win our loyalty, our money, and our minds.
Author: François Cooren
Publisher: John Benjamins Publishing
ISBN: 9027288194
Category : Language Arts & Disciplines
Languages : en
Pages : 224
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Book Description
What happens when people communicate or dialogue with each other? This is the daunting question that this book proposes to address by starting from a controversial hypothesis: What if human interactants were not the only ones to be considered, paraphrasing Austin (1962), as “doing things with words”? That is, what if other “things” could also be granted the status of agents in a dialogical situation? Action and Agency in Dialogue: Passion, incarnation, and ventriloquism proposes to explore this unique hypothesis by mobilizing metaphorically the notion of ventriloquism. According to this ventriloqual perspective, interactions are never purely local, but dislocal, that is, they constantly mobilize figures (collectives, principles, values, emotions, etc.) that incarnate themselves in people’s discussions. This highly original book, which develops the analytical, practical and ethical dimensions of such a theoretical positioning, may be of interest to communication scholars, linguists, sociologists, conversation analysts, management and organizational scholars, as well as philosophers interested in language, action and ethics.
Author: George Berger
Publisher:
ISBN:
Category : Biography & Autobiography
Languages : en
Pages : 324
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Book Description
In-depth interviews with the main movers in the punk rock movement--Crass members Penny Rimbaud, Gee Vaucher, and Steve Ignorant--detail the face of the revolution founded by these radical thinkers and artists. When punk ruled the waves, Crass waived the rules by putting out their own records, films, and magazines and setting up a series of situationist pranks that were dutifully covered by the world's press. Not just another iconoclastic band, Crass was a musical, social, and political phenomenon: commune dwellers that were rarely photographed and remained contemptuous of conventional pop stardom. As detailed in this history, their members explored and finally exhausted the possibilities of punk-led anarchy. This definitive biography of the band not only gives backstage access to their lives, philosophies, and the movement that followed, but also to never-before-seen photographs and rare dialogues.
Author: Manthia Diawara
Publisher: Indiana University Press
ISBN: 9780253207074
Category : History
Languages : en
Pages : 212
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Book Description
Manthia Diawara provides an insider's account of the history and current status of African cinema. African Cinema: Politics and Culture is the first extended study in English of Sub-Saharan cinema. Employing an interdisciplinary approach which draws on history, political science, economics, and cultural studies, Diawara discusses such issues as film production and distribution, and film aesthetics from the colonial period to the present. The book traces the growth of African cinema through the efforts of pioneer filmmakers such as Paulin Soumanou Vieyra, Oumarou Ganda, Jean-René Débrix, Jean Rouch, and Ousmane Sembène, the Pan-African Filmmakers' Organization (FEPACI), and the Ougadougou Pan-African Film Festival (FESPACO). Diwara focuses on the production and distribution histories of key films such as Ousmane Sembène's Black Girl and Mandabi (1968) and Souleymane Cissé's Fine (1982). He also examines the role of missionary films in Africa, Débrix's ideas concerning 'magic, ' the links between Yoruba theater and Nigerian cinema, and the parallels between Hindu mythologicals in India and the Yoruba-theater - inflected films in Nigeria. Diawara also looks at film and nationalism, film and popular culture, and the importance of FESPACO. African Cinema: Politics and Culture makes a major contribution to the expanding discussion of Eurocentrism, the canon, and multi-culturalism.
Author: Dr. Reinaldo J. Perez
Publisher: John Wiley & Sons
ISBN: 111908279X
Category : Science
Languages : en
Pages : 768
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Book Description
A comprehensive resource that explores electromagnetic compatibility (EMC) for aerospace systems Handbook of Aerospace Electromagnetic Compatibility is a groundbreaking book on EMC for aerospace systems that addresses both aircraft and space vehicles. With contributions from an international panel of aerospace EMC experts, this important text deals with the testing of spacecraft components and subsystems, analysis of crosstalk and field coupling, aircraft communication systems, and much more. The text also includes information on lightning effects and testing, as well as guidance on design principles and techniques for lightning protection. The book offers an introduction to E3 models and techniques in aerospace systems and explores EMP effects on and technology for aerospace systems. Filled with the most up-to-date information, illustrative examples, descriptive figures, and helpful scenarios, Handbook of Aerospace Electromagnetic Compatibility is designed to be a practical information source. This vital guide to electromagnetic compatibility: • Provides information on a range of topics including grounding, coupling, test procedures, standards, and requirements • Offers discussions on standards for aerospace applications • Addresses aerospace EMC through the use of testing and theoretical approaches Written for EMC engineers and practitioners, Handbook of Aerospace Electromagnetic Compatibility is a critical text for understanding EMC for aerospace systems.
Author: John Henry Lorentz
Publisher: Historical Dictionaries of Asia, Oceania, and the Middle East
ISBN:
Category : History
Languages : en
Pages : 570
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Book Description
Provides an overview of specific events, movements, people, political and social groups, places, trends, and chronology. Allows for considerable exploration of a number of historical and contemporary topics and issues. The modern period, defined as 1800-present, is covered extensively.
Author: Paulo Freire
Publisher: Bloomsbury Publishing
ISBN: 1350190179
Category : Education
Languages : en
Pages : 216
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Book Description
Famous for his advocacy of 'critical pedagogy', Paulo Freire was Latin America's foremost educationalist, a thinker and writer whose work and ideas continue to exert enormous influence in education throughout the world today. Education for Critical Consciousness is the main statement of Freire's revolutionary method of education. It takes the life situation of the learner as its starting point and the raising of consciousness and the overcoming of obstacles as its goals. For Freire, man's striving for his own humanity requires the changing of structures which dehumanize both the oppressor and the oppressed. This edition includes a substantial new introduction by Carlos Alberto Torres, Distinguished Professor and Founding Director of the Paulo Freire Institute, UCLA, USA. Translated by Myra Bergman Ramos.
