Wireless Dada

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Publisher : Northwestern University Press
ISBN 13 : 0810141078
Total Pages : 264 pages
Book Rating : 4.8/5 (11 download)

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Book Synopsis Wireless Dada by : Kurt Beals

Download or read book Wireless Dada written by Kurt Beals and published by Northwestern University Press. This book was released on 2019-11-15 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wireless Dada: Telegraphic Poetics in the Avant-Garde demonstrates that the poetics of the Dada movement was profoundly influenced by the telegraph and the technological and social transformations that it brought about in the nineteenth and early twentieth centuries. While telegraphy’s impact on Italian Futurism and German Expressionism is widely acknowledged, its formative role in Dada poetics has been largely neglected. Drawing on media history and theory, avant-garde studies, and German literary studies, Kurt Beals shows how the telegraph and the cultural discourses that surrounded it shaped the radical works of this seminal avant-garde movement. The “nonsense” strain in Dada is frequently seen as a response to the senseless violence of the First World War. Beals argues that it was not just the war that turned Dada poetry into a jumble of senseless signals—it was also the wireless.

Wireless Dada

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Publisher : Northwestern University Press
ISBN 13 : 9780810141063
Total Pages : 216 pages
Book Rating : 4.1/5 (41 download)

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Book Synopsis Wireless Dada by : Kurt Beals

Download or read book Wireless Dada written by Kurt Beals and published by Northwestern University Press. This book was released on 2019-11-15 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wireless Dada: Telegraphic Poetics in the Avant-Garde is a literary critical study of the telegraph's effect on the poetics of the Dada movement. This book tracks the influence of the technological and social transformations brought about in the nineteenth and early twentieth centuries on experiments in poetry.

Wireless Mesh Networks

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Publisher :
ISBN 13 : 178985203X
Total Pages : 182 pages
Book Rating : 4.7/5 (898 download)

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Book Synopsis Wireless Mesh Networks by : Mutamed Khatib

Download or read book Wireless Mesh Networks written by Mutamed Khatib and published by . This book was released on 2020-05-13 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Mathematics and its Applications in New Computer Systems

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Publisher : Springer Nature
ISBN 13 : 3030970205
Total Pages : 571 pages
Book Rating : 4.0/5 (39 download)

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Book Synopsis Mathematics and its Applications in New Computer Systems by : Andrei Tchernykh

Download or read book Mathematics and its Applications in New Computer Systems written by Andrei Tchernykh and published by Springer Nature. This book was released on 2022-04-25 with total page 571 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is based on the best papers accepted for presentation during the International Conference on Mathematics and its Applications in New Computer Systems (MANCS-2021), Russia. The book includes research materials on modern mathematical problems, solutions in the field of cryptography, data analysis and modular computing, as well as scientific computing. The scope of numerical methods in scientific computing presents original research, including mathematical models and software implementations, related to the following topics: numerical methods in scientific computing; solving optimization problems; methods for approximating functions, etc. The studies in mathematical solutions to cryptography issues are devoted to secret sharing schemes, public key systems, private key systems, n-degree comparisons, modular arithmetic of simple, addition of points of an elliptic curve, Hasse theorem, homomorphic encryption and learning with error, and modifications of the RSA system. Furthermore, issues in data analysis and modular computing include contributions in the field of mathematical statistics, machine learning methods, deep learning, and neural networks. Finally, the book gives insights into the fundamental problems in mathematics education. The book intends for readership specializing in the field of cryptography, information security, parallel computing, computer technology, and mathematical education.

Global Innovation Management

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Publisher : Bloomsbury Publishing
ISBN 13 : 1137520191
Total Pages : 380 pages
Book Rating : 4.1/5 (375 download)

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Book Synopsis Global Innovation Management by : J. Christopher Westland

Download or read book Global Innovation Management written by J. Christopher Westland and published by Bloomsbury Publishing. This book was released on 2017-09-16 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an exciting new edition of a core textbook that explores innovation management from a global perspective. Innovation management is increasingly significant, both as an academic discipline and as an integral part of the way businesses seek to change and grow. However the key factors behind successful innovation and the process by which innovation is turned into profit in the global arena remain largely undefined. The new edition provides a unique answer to these questions and offers a step-by-step guide to innovation strategy development, taking into account the global context in which businesses today operate. Written by a highly experienced instructor, this is an ideal companion for undergraduate students of innovation as well as postgraduate and MBA students taking modules with an innovation component. New to this Edition: - Completely rewritten and restructured to explore in more depth how innovative ideas are identified and strategized in an increasingly globalized world - Fully updated and extended case studies on world-leading companies - Increased attention to commercialized innovation, including factors such as intellectual property laws, technology acceleration and the competition for venture capital and finance - Coverage of new topics such as open innovation and service innovation - Expanded coverage of the tools and methods needed to understand financial gain and risk

Emerging Technologies for Healthcare

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Publisher : John Wiley & Sons
ISBN 13 : 1119792320
Total Pages : 418 pages
Book Rating : 4.1/5 (197 download)

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Book Synopsis Emerging Technologies for Healthcare by : Monika Mangla

Download or read book Emerging Technologies for Healthcare written by Monika Mangla and published by John Wiley & Sons. This book was released on 2021-07-20 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: ?Emerging Technologies for Healthcare? beginnt mit einer IoT-basierten Lösung für die Automatisierung im Gesundheitssektor, wodurch Verfahren auf Grundlage von fortschrittlichen Deep-Learning-Techniken ermöglicht werden. Praktische Lösungen, die auf verschiedenen Ansätzen des maschinellen Lernens beruhen, werden vorgestellt und auf die Analyse und Vorhersage von Krankheiten angewandt. Ein Beispiel ist die Nutzung einer dreidimensionalen Matrix für die Behandlung chronischer Nierenerkrankungen, die Diagnose und Prognose des erworbenen demyelinisierenden Syndroms und von Autismus-Spektrum-Störungen sowie die Erkennung von Lungenentzündungen. Außerdem werden verschiedene geeignete Ansätze vorgestellt, wie die Gesundheitssysteme mit COVID-19-Fällen umgehen können. Daneben wird ein detaillierter Erkennungsmechanismus dargelegt, mit dessen Hilfe Lösungen entwickelt werden können, um von der Handschrift auf die Persönlichkeit zu schließen, und es werden neuartige Ansätze für die Stimmungsanalyse aufgezeigt, die mit ausreichenden Daten und verschiedenen Betrachtungsweisen untermauert sind. Dieses Buch enthält nicht nur theoretische Ansätze und Algorithmen, sondern zeigt auch auf, welche Schritte bei der Problemanalyse mithilfe von Daten, Prozessen, Berichten und Optimierungstechniken durchlaufen werden. Es ist ein umfassendes Nachschlagewerk für die Lösung verschiedener Probleme anhand von Algorithmen für das maschinelle Lernen.

Mobile Marketing

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Publisher : Kogan Page Publishers
ISBN 13 : 9780749437985
Total Pages : 248 pages
Book Rating : 4.4/5 (379 download)

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Book Synopsis Mobile Marketing by : Matt Haig

Download or read book Mobile Marketing written by Matt Haig and published by Kogan Page Publishers. This book was released on 2002 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mobile marketing [using SMS - the short messaging service to send text messages via mobile phones] is emerging as a direct and powerful way to communicate with customers. This is the first book devoted exclusively to exploring the potential of this new medium.

Media Parasites in the Early Avant-Garde

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Publisher : Springer
ISBN 13 : 113727686X
Total Pages : 242 pages
Book Rating : 4.1/5 (372 download)

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Book Synopsis Media Parasites in the Early Avant-Garde by : A. Niebisch

Download or read book Media Parasites in the Early Avant-Garde written by A. Niebisch and published by Springer. This book was released on 2012-11-28 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Niebisch retraces how the early Avant-Garde movements started out as parasites inhabiting and irritating the emerging mass media circuits of the press, cinema, and wired and wireless communication and how they aimed at creating a media ecology based on and inspired by technologies such as the radio and the photo cell.

Mobile Computing and Wireless Networks: Concepts, Methodologies, Tools, and Applications

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Publisher : IGI Global
ISBN 13 : 1466687525
Total Pages : 2351 pages
Book Rating : 4.4/5 (666 download)

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Book Synopsis Mobile Computing and Wireless Networks: Concepts, Methodologies, Tools, and Applications by : Management Association, Information Resources

Download or read book Mobile Computing and Wireless Networks: Concepts, Methodologies, Tools, and Applications written by Management Association, Information Resources and published by IGI Global. This book was released on 2015-09-30 with total page 2351 pages. Available in PDF, EPUB and Kindle. Book excerpt: We live in a wireless society, one where convenience and accessibility determine the efficacy of the latest electronic gadgets and mobile devices. Making the most of these technologies—and ensuring their security against potential attackers—requires increased diligence in mobile technology research and development. Mobile Computing and Wireless Networks: Concepts, Methodologies, Tools, and Applications brings together a comprehensive range of voices and research in the area of mobile and wireless technologies, exploring the successes and failures, advantages and drawbacks, and benefits and limitations of the technology. With applications in a plethora of different research and topic areas, this multi-volume reference work benefits researchers, service providers, end-users, and information technology professionals. This four-volume reference work includes a diverse array of chapters and authors covering topics such as m-commerce, network ethics, mobile agent systems, mobile learning, communications infrastructure, and applications in fields such as business, healthcare, government, tourism, and more.

25 Things Every New Dad Should Know

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Publisher :
ISBN 13 : 1558328939
Total Pages : 211 pages
Book Rating : 4.5/5 (583 download)

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Book Synopsis 25 Things Every New Dad Should Know by : Robert Sears

Download or read book 25 Things Every New Dad Should Know written by Robert Sears and published by . This book was released on 2017-09-12 with total page 211 pages. Available in PDF, EPUB and Kindle. Book excerpt: James and Robert Sears, professional pediatricians and dads, give new fathers the wisdom and encouragement they need to start their parenting journey in 25 Things Every New Dad Should Know.

Social Computing: Concepts, Methodologies, Tools, and Applications

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Publisher : IGI Global
ISBN 13 : 1605669857
Total Pages : 2409 pages
Book Rating : 4.6/5 (56 download)

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Book Synopsis Social Computing: Concepts, Methodologies, Tools, and Applications by : Dasgupta, Subhasish

Download or read book Social Computing: Concepts, Methodologies, Tools, and Applications written by Dasgupta, Subhasish and published by IGI Global. This book was released on 2009-11-30 with total page 2409 pages. Available in PDF, EPUB and Kindle. Book excerpt: Uncovers the growing and expanding phenomenon of human behavior, social constructs, and communication in online environments.

Industrial Instrumentation and Control Systems II

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Publisher : Trans Tech Publications Ltd
ISBN 13 : 3038261327
Total Pages : 2716 pages
Book Rating : 4.0/5 (382 download)

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Book Synopsis Industrial Instrumentation and Control Systems II by : Prasad Yarlagadda

Download or read book Industrial Instrumentation and Control Systems II written by Prasad Yarlagadda and published by Trans Tech Publications Ltd. This book was released on 2013-07-15 with total page 2716 pages. Available in PDF, EPUB and Kindle. Book excerpt: Collection of selected, peer reviewed papers from the 2013 2nd International Conference on Measurement, Instrumentation and Automation (ICMIA 2013), April 23-24, 2013, Guilin, China. Volume is indexed by Thomson Reuters CPCI-S (WoS). The 503 papers are grouped as follows: Chapter 1: Intelligent Electrician, Electricity Instruments; Chapter 2: Sensors and Navigation Engineering; Chapter 3: Control System Modeling, Simulation and Modelling Technology; Chapter 4: Fluid, Flow and Hydravlic Engineering, Control Technology; Chapter 5: Mechatronics; Chapter 6: Industrial Robot, Power Systems Engineering and Automation; Chapter 7: Auto Control System; Chapter 8: CAD / CAM / CAE and Related Modelling Technologies; Chapter 9: Electric, Electronic, Microelectronic, Embedded Systems and Engineering; Chapter 10: Communication and Wireless Engineering Technology; Chapter 11: Software Development, WEB-Service Engineering and Mathematical Modelling; Chapter 12: Information Technologies and Computer Applications in Industry and Engineering; Chapter 13: Network Engineering and Network Security; Chapter 14: The Internet of Things, PDM, ERP and Supply Chain Management.

Dada Data

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Publisher : Bloomsbury Publishing
ISBN 13 : 1350227625
Total Pages : 361 pages
Book Rating : 4.3/5 (52 download)

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Book Synopsis Dada Data by : Sarah Hegenbart

Download or read book Dada Data written by Sarah Hegenbart and published by Bloomsbury Publishing. This book was released on 2023-02-09 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: What is the relevance of Dada and its artistic strategies in our current moment, one marked by post-truth politics, information floods and big data? How can contemporary art highlight the neglected nuances of cultural representation in the present day? While it may feel like we are living in a period of anomaly with the rise of the alt-right, this book shows how the Dada movement's artistic response to the aggressive nationalism and fascism of its time offers a fruitful analogy to our contemporary era. Dada's counter-cultural strategies, such as the distortion of reality and attacks on elites and rationality, have long been endorsed by artistic avantgardes and subcultures. Dada Data details how modern-day movements have appropriated such tactics in their ways of addressing the public both on- and offline. Bringing together contributions from interdisciplinary scholars, curators and artists working in global contexts that explore an array of artistic modes of persuasion and resistance, the book demonstrates how contemporary art can bring out neglected nuances of our post-truth moment. In linking the Dada movement's counter-cultural activities to modern phenomena such as post-internet art, information floods and big data mining, the book collates original propaganda with diverse artwork from such figures as Hannah Höch, Paula Rego, Tschabalala Self, Sheida Soleimani and South African artists donna Kukama and Kemang Wa Lehulere. In doing so, Dada Data brings together a rich scrapbook of Dada resources and perspectives that are highly relevant to present-day political concerns. With artistic contributions by IOCOSE, donna Kukama, Kemang Wa Lehulere and Montage Mädels.

Cellular and mobile communication

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Publisher : Balamurali
ISBN 13 :
Total Pages : 190 pages
Book Rating : 4./5 ( download)

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Book Synopsis Cellular and mobile communication by : Balamurali

Download or read book Cellular and mobile communication written by Balamurali and published by Balamurali. This book was released on with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents 1 Introductory Concepts 1 1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 Evolution of Mobile Radio Communications . . . . . . . . . . . . . . 1 1.3 Present Day Mobile Communication . . . . . . . . . . . . . . . . . . 3 1.4 Fundamental Techniques . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.4.1 Radio Transmission Techniques . . . . . . . . . . . . . . . . . 5 1.5 How a Mobile Call is Actually Made? . . . . . . . . . . . . . . . . . 7 1.5.1 Cellular Concept . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.5.2 Operational Channels . . . . . . . . . . . . . . . . . . . . . . 8 1.5.3 Making a Call . . . . . . . . . . . . . . . . . . . . . . . . . . 8 1.6 Future Trends . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 1.7 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2 Modern Wireless Communication Systems 11 2.1 1G: First Generation Networks . . . . . . . . . . . . . . . . . . . . . 11 2.2 2G: Second Generation Networks . . . . . . . . . . . . . . . . . . . . 11 2.2.1 TDMA/FDD Standards . . . . . . . . . . . . . . . . . . . . . 12 2.2.2 CDMA/FDD Standard . . . . . . . . . . . . . . . . . . . . . 12 2.2.3 2.5G Mobile Networks . . . . . . . . . . . . . . . . . . . . . . 12 2.3 3G: Third Generation Networks . . . . . . . . . . . . . . . . . . . . . 13 2.3.1 3G Standards and Access Technologies . . . . . . . . . . . . . 14 2.3.2 3G W-CDMA (UMTS) . . . . . . . . . . . . . . . . . . . . . 14 2.3.3 3G CDMA2000 . . . . . . . . . . . . . . . . . . . . . . . . . . 16 2.3.4 3G TD-SCDMA . . . . . . . . . . . . . . . . . . . . . . . . . 18 2.4 Wireless Transmission Protocols . . . . . . . . . . . . . . . . . . . . 19 2.4.1 Wireless Local Loop (WLL) and LMDS . . . . . . . . . . . . 19 2.4.2 Bluetooth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 2.4.3 Wireless Local Area Networks (W-LAN) . . . . . . . . . . . . 20 2.4.4 WiMax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 2.4.5 Zigbee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 2.4.6 Wibree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 2.5 Conclusion: Beyond 3G Networks . . . . . . . . . . . . . . . . . . . . 22 2.6 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 3 The Cellular Engineering Fundamentals 23 3.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 3.2 What is a Cell? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 3.3 Frequency Reuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 3.4 Channel Assignment Strategies . . . . . . . . . . . . . . . . . . . . . 27 3.4.1 Fixed Channel Assignment (FCA) . . . . . . . . . . . . . . . 27 3.4.2 Dynamic Channel Assignment (DCA) . . . . . . . . . . . . . 27 3.5 Hando Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 3.5.1 Factors In uencing Hando s . . . . . . . . . . . . . . . . . . 29 3.5.2 Hando s In Di erent Generations . . . . . . . . . . . . . . . 31 3.5.3 Hando Priority . . . . . . . . . . . . . . . . . . . . . . . . . 33 3.5.4 A Few Practical Problems in Hando Scenario . . . . . . . . 33 3.6 Interference & System Capacity . . . . . . . . . . . . . . . . . . . . . 34 3.6.1 Co-channel interference (CCI). . . . . . . . . . . . . . . . . . 34 3.6.2 Adjacent Channel Interference (ACI) . . . . . . . . . . . . . . 37 3.7 Enhancing Capacity And Cell Coverage . . . . . . . . . . . . . . . . 38 3.7.1 The Key Trade-o . . . . . . . . . . . . . . . . . . . . . . . . 38 3.7.2 Cell-Splitting . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 3.7.3 Sectoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 3.7.4 Microcell Zone Concept . . . . . . . . . . . . . . . . . . . . . 46 3.8 Trunked Radio System . . . . . . . . . . . . . . . . . . . . . . . . . . 47 3.9 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 4 Free Space Radio Wave Propagation 54 4.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 4.2 Free Space Propagation Model . . . . . . . . . . . . . . . . . . . . . 55 4.3 Basic Methods of Propagation . . . . . . . . . . . . . . . . . . . . . . 57 4.3.1 Re ection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 4.3.2 Di raction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 4.3.3 Scattering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 4.4 Two Ray Re ection Model . . . . . . . . . . . . . . . . . . . . . . . . 59 4.5 Di raction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 4.5.1 Knife-Edge Di raction Geometry . . . . . . . . . . . . . . . . 64 4.5.2 Fresnel Zones: the Concept of Di raction Loss . . . . . . . . 66 4.5.3 Knife-edge di raction model . . . . . . . . . . . . . . . . . . . 68 4.6 Link Budget Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . 69 4.6.1 Log-distance Path Loss Model . . . . . . . . . . . . . . . . . 69 4.6.2 Log Normal Shadowing . . . . . . . . . . . . . . . . . . . . . 70 4.7 Outdoor Propagation Models . . . . . . . . . . . . . . . . . . . . . . 70 4.7.1 Okumura Model . . . . . . . . . . . . . . . . . . . . . . . . . 70 4.7.2 Hata Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 4.8 Indoor Propagation Models . . . . . . . . . . . . . . . . . . . . . . . 72 4.8.1 Partition Losses Inside a Floor (Intra- oor) . . . . . . . . . . 72 4.8.2 Partition Losses Between Floors (Inter- oor) . . . . . . . . . 73 4.8.3 Log-distance Path Loss Model . . . . . . . . . . . . . . . . . 73 4.9 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 4.10 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 5 Multipath Wave Propagation and Fading 75 5.1 Multipath Propagation . . . . . . . . . . . . . . . . . . . . . . . . . . 75 5.2 Multipath & Small-Scale Fading . . . . . . . . . . . . . . . . . . . . 75 5.2.1 Fading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 5.2.2 Multipath Fading E ects . . . . . . . . . . . . . . . . . . . . 76 5.2.3 Factors In uencing Fading . . . . . . . . . . . . . . . . . . . . 76 5.3 Types of Small-Scale Fading . . . . . . . . . . . . . . . . . . . . . . . 77 5.3.1 Fading E ects due to Multipath Time Delay Spread . . . . . 77 5.3.2 Fading E ects due to Doppler Spread . . . . . . . . . . . . . 78 5.3.3 Doppler Shift . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 5.3.4 Impulse Response Model of a Multipath Channel . . . . . . . 80 5.3.5 Relation Between Bandwidth and Received Power . . . . . . 82 5.3.6 Linear Time Varying Channels (LTV) . . . . . . . . . . . . . 84 5.3.7 Small-Scale Multipath Measurements . . . . . . . . . . . . . . 85 5.4 Multipath Channel Parameters . . . . . . . . . . . . . . . . . . . . . 87 5.4.1 Time Dispersion Parameters . . . . . . . . . . . . . . . . . . 87 5.4.2 Frequency Dispersion Parameters . . . . . . . . . . . . . . . . 89 5.5 Statistical models for multipath propagation . . . . . . . . . . . . . . 90 5.5.1 NLoS Propagation: Rayleigh Fading Model . . . . . . . . . . 91 5.5.2 LoS Propagation: Rician Fading Model . . . . . . . . . . . . 93 5.5.3 Generalized Model: Nakagami Distribution . . . . . . . . . . 94 5.5.4 Second Order Statistics . . . . . . . . . . . . . . . . . . . . . 95 5.6 Simulation of Rayleigh Fading Models . . . . . . . . . . . . . . . . . 96 5.6.1 Clarke's Model: without Doppler E ect . . . . . . . . . . . . 96 5.6.2 Clarke and Gans' Model: with Doppler E ect . . . . . . . . . 96 5.6.3 Rayleigh Simulator with Wide Range of Channel Conditions 97 5.6.4 Two-Ray Rayleigh Faded Model . . . . . . . . . . . . . . . . 97 5.6.5 Saleh and Valenzuela Indoor Statistical Model . . . . . . . . 98 5.6.6 SIRCIM/SMRCIM Indoor/Outdoor Statistical Models . . . . 98 5.7 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 5.8 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 6 Transmitter and Receiver Techniques 101 6.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 6.2 Modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 6.2.1 Choice of Modulation Scheme . . . . . . . . . . . . . . . . . . 102 6.2.2 Advantages of Modulation . . . . . . . . . . . . . . . . . . . . 102 6.2.3 Linear and Non-linear Modulation Techniques . . . . . . . . . 103 6.2.4 Amplitude and Angle Modulation . . . . . . . . . . . . . . . 104 6.2.5 Analog and Digital Modulation Techniques . . . . . . . . . . 104 6.3 Signal Space Representation of Digitally Modulated Signals . . . . . 104 6.4 Complex Representation of Linear Modulated Signals and Band Pass Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105 6.5 Linear Modulation Techniques . . . . . . . . . . . . . . . . . . . . . 106 6.5.1 Amplitude Modulation (DSBSC) . . . . . . . . . . . . . . . . 106 6.5.2 BPSK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107 6.5.3 QPSK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107 6.5.4 O set-QPSK . . . . . . . . . . . . . . . . . . . . . . . . . . . 108 6.5.5 =4 DQPSK . . . . . . . . . . . . . . . . . . . . . . . . . . . 110 6.6 Line Coding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110 6.7 Pulse Shaping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111 6.7.1 Nyquist pulse shaping . . . . . . . . . . . . . . . . . . . . . . 112 6.7.2 Raised Cosine Roll-O Filtering . . . . . . . . . . . . . . . . 113 6.7.3 Realization of Pulse Shaping Filters . . . . . . . . . . . . . . 113 6.8 Nonlinear Modulation Techniques . . . . . . . . . . . . . . . . . . . . 114 6.8.1 Angle Modulation (FM and PM) . . . . . . . . . . . . . . . . 114 6.8.2 BFSK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116 6.9 GMSK Scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118 6.10 GMSK Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119 6.11 Two Practical Issues of Concern . . . . . . . . . . . . . . . . . . . . 121 6.11.1 Inter Channel Interference . . . . . . . . . . . . . . . . . . . . 121 6.11.2 Power Ampli er Nonlinearity . . . . . . . . . . . . . . . . . . 122 6.12 Receiver performance in multipath channels . . . . . . . . . . . . . . 122 6.12.1 Bit Error Rate and Symbol Error Rate . . . . . . . . . . . . . 123 6.13 Example of a Multicarrier Modulation: OFDM . . . . . . . . . . . . 123 6.13.1 Orthogonality of Signals . . . . . . . . . . . . . . . . . . . . . 125 6.13.2 Mathematical Description of OFDM . . . . . . . . . . . . . . 125 6.14 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127 6.15 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 7 Techniques to Mitigate Fading E ects 129 7.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129 7.2 Equalization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130 7.2.1 A Mathematical Framework . . . . . . . . . . . . . . . . . . . 131 7.2.2 Zero Forcing Equalization . . . . . . . . . . . . . . . . . . . . 132 7.2.3 A Generic Adaptive Equalizer . . . . . . . . . . . . . . . . . . 132 7.2.4 Choice of Algorithms for Adaptive Equalization . . . . . . . . 134 7.3 Diversity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136 7.3.1 Di erent Types of Diversity . . . . . . . . . . . . . . . . . . . 137 7.4 Channel Coding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143 7.4.1 Shannon's Channel Capacity Theorem . . . . . . . . . . . . . 143 7.4.2 Block Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144 7.4.3 Convolutional Codes . . . . . . . . . . . . . . . . . . . . . . . 152 7.4.4 Concatenated Codes . . . . . . . . . . . . . . . . . . . . . . . 155 7.5 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156 7.6 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156 8 Multiple Access Techniques 157 8.1 Multiple Access Techniques for Wireless Communication . . . . . . . 157 8.1.1 Narrowband Systems . . . . . . . . . . . . . . . . . . . . . . . 158 8.1.2 Wideband Systems . . . . . . . . . . . . . . . . . . . . . . . . 158 8.2 Frequency Division Multiple Access . . . . . . . . . . . . . . . . . . . 159 8.2.1 FDMA/FDD in AMPS . . . . . . . . . . . . . . . . . . . . . 160 8.2.2 FDMA/TDD in CT2 . . . . . . . . . . . . . . . . . . . . . . . 160 8.2.3 FDMA and Near-Far Problem . . . . . . . . . . . . . . . . . 160 8.3 Time Division Multiple Access . . . . . . . . . . . . . . . . . . . . . 161 8.3.1 TDMA/FDD in GSM . . . . . . . . . . . . . . . . . . . . . . 161 8.3.2 TDMA/TDD in DECT . . . . . . . . . . . . . . . . . . . . . 162 8.4 Spread Spectrum Multiple Access . . . . . . . . . . . . . . . . . . . . 163 8.4.1 Frequency Hopped Multiple Access (FHMA) . . . . . . . . . 163 8.4.2 Code Division Multiple Access . . . . . . . . . . . . . . . . . 163 8.4.3 CDMA and Self-interference Problem . . . . . . . . . . . . . 164 8.4.4 CDMA and Near-Far Problem . . . . . . . . . . . . . . . . . 165 8.4.5 Hybrid Spread Spectrum Techniques . . . . . . . . . . . . . . 165 8.5 Space Division Multiple Access . . . . . . . . . . . . . . . . . . . . . 166 8.6 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166 8.7 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167

Future in Mobile Computing

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Publisher : Lulu.com
ISBN 13 : 1387015826
Total Pages : 108 pages
Book Rating : 4.3/5 (87 download)

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Book Synopsis Future in Mobile Computing by : Dr. Manish Saxena

Download or read book Future in Mobile Computing written by Dr. Manish Saxena and published by Lulu.com. This book was released on 2017-07-21 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: Well, there are thousands of books on Mobile Computing already flooding the market and libraries. The reader may naturally wonder about the need of writing another book on this topic.This book is based on my studies during teaching Mobile Computing to my Computer Science students'. This book assumes that you are having basic knowledge of computer science. My objective is to provide you in-depth knowledge on various concepts of Mobile Computing which is a booming subject after Demonetization and Digital India concepts in India.I have used simple language so that you can understand the concepts quite easily. Based on my teaching, industrial and consultancy experience, I have tried to achieve these goals in a simple way. My writing formula was based on:Problems + Conceptual Background + Solutions

Dada and After

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Publisher : Manchester University Press
ISBN 13 : 9780719009433
Total Pages : 258 pages
Book Rating : 4.0/5 (94 download)

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Book Synopsis Dada and After by : Alan Young

Download or read book Dada and After written by Alan Young and published by Manchester University Press. This book was released on 1983 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Handbook of Mobile Data Privacy

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Publisher : Springer
ISBN 13 : 3319981617
Total Pages : 426 pages
Book Rating : 4.3/5 (199 download)

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Book Synopsis Handbook of Mobile Data Privacy by : Aris Gkoulalas-Divanis

Download or read book Handbook of Mobile Data Privacy written by Aris Gkoulalas-Divanis and published by Springer. This book was released on 2018-10-26 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook covers the fundamental principles and theory, and the state-of-the-art research, systems and applications, in the area of mobility data privacy. It is primarily addressed to computer science and statistics researchers and educators, who are interested in topics related to mobility privacy. This handbook will also be valuable to industry developers, as it explains the state-of-the-art algorithms for offering privacy. By discussing a wide range of privacy techniques, providing in-depth coverage of the most important ones, and highlighting promising avenues for future research, this handbook also aims at attracting computer science and statistics students to this interesting field of research. The advances in mobile devices and positioning technologies, together with the progress in spatiotemporal database research, have made possible the tracking of mobile devices (and their human companions) at very high accuracy, while supporting the efficient storage of mobility data in data warehouses, which this handbook illustrates. This has provided the means to collect, store and process mobility data of an unprecedented quantity, quality and timeliness. As ubiquitous computing pervades our society, user mobility data represents a very useful but also extremely sensitive source of information. On one hand, the movement traces that are left behind by the mobile devices of the users can be very useful in a wide spectrum of applications such as urban planning, traffic engineering, and environmental pollution management. On the other hand, the disclosure of mobility data to third parties may severely jeopardize the privacy of the users whose movement is recorded, leading to abuse scenarios such as user tailing and profiling. A significant amount of research work has been conducted in the last 15 years in the area of mobility data privacy and important research directions, such as privacy-preserving mobility data management, privacy in location sensing technologies and location-based services, privacy in vehicular communication networks, privacy in location-based social networks, privacy in participatory sensing systems which this handbook addresses.. This handbook also identifies important privacy gaps in the use of mobility data and has resulted to the adoption of international laws for location privacy protection (e.g., in EU, US, Canada, Australia, New Zealand, Japan, Singapore), as well as to a large number of interesting technologies for privacy-protecting mobility data, some of which have been made available through open-source systems and featured in real-world applications.