Mobile System Design

Herausforderungen, Anforderungen und Lösungsansätze für Design, Implementierung und Usability-Testing Mobiler Systeme.

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Author: Dennis Krannich

Publisher: BoD – Books on Demand

ISBN: 3732216926

Category: Computers

Page: 212

View: 5839

Mobile Systeme spielen eine immer bedeutendere Rolle in unserem täglichen Leben. Aus diesem Grund werden effektive Prozesse benötigt, um den steigenden Anforderungen der Endverbraucher und dem hohen Kosten- und Zeitdruck gerecht zu werden. Während das Usability-Testing für stationäre Systeme weitestgehend standardisiert ist, stellen Mobile Systeme aufgrund ihrer Heterogenität große Anforderungen an das Usability-Testing im originären Benutzungskontext. Die Hauptfrage dieses Buches ist, wie zum einen gewährleistet werden kann, dass Mobile Systeme möglichst unkompliziert und intuitiv benutzt werden können und zum anderen eine stärkere Be- rücksichtigung sowohl der zukünftigen Benutzer als auch des Benutzungskontextes im Entwicklungsprozess stattfinden kann. Zu diesem Zweck wird ein toolbasiertes Vorgehensmodell konzipiert, entwickelt und empirisch untersucht. Das Buch richtet sich sowohl an Designer, als auch an Programmierer und bietet einen Überblick aktueller Forschung rund um das Thema Mobile System Design.

RF System Design of Transceivers for Wireless Communications

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Author: Qizheng Gu

Publisher: Springer Science & Business Media

ISBN: 9780387241616

Category: Technology & Engineering

Page: 480

View: 8567

This book is for RF Engineers and, in particular, those engineers focusing mostly on RF systems and RFIC design. The author develops systematic methods for RF systems design, complete with a comprehensive set of design formulas. Its focus on mobile station transmitter and receiver system design also applies to transceiver design of other wireless systems such as WLAN. This comprehensive reference work covers a wide range of topics from general principles of communication theory, as it applies to digital radio designs to specific examples on implementing multimode mobile systems.

Mobile Handset Design

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Author: Sajal Kumar Das

Publisher: John Wiley & Sons

ISBN: 1118684575

Category: Technology & Engineering

Page: 512

View: 1619

The evolution of mobile communication standards presents numerouschallenges in mobile handset design. Designers must continue toturn out handsets that maintain high device performance and airinterface compatibility, while at the same time shrink powerconsumption, form factors, and costs. Mobile Handset Design is uniquely written to equipprofessionals and students with a complete understanding of how amobile phone works, and teaches the skills to design the latestmobile handsets. Das walks readers through mobile phone operatingprinciples, system infrastructure, TDMA-FDMA-CDMA-OFDMA techniques,hardware anatomy, software and protocols, and internal modules,components, and circuits. He presents all problems associated withmobile wireless channels and recommends corresponding designsolutions to overcome those issues. Mobile RF front-end, digitalbaseband design techniques, and associated trade-offs are alsocovered. Das also discusses the productization aspects and reviewsnew research developments for different mobile phone systems overgenerations. Teaches basic working principles of legacy and 4G mobilesystems Vividly illustrates and explains all key components and theanatomy of mobile phones Explains all hardware and software blocks, from principle topractice to product Discusses key design attributes such as low power consumptionand slim form factors Moves through all topics in a systematic fashion for easycomprehension Presentation files with lecture notes available for instructoruse This book is essential for practicing software, hardware and RFdesign engineers and product managers working to create innovate,competitive handsets. Mobile Handset Design is also idealfor fresh graduates or experienced engineers who are new to themobile industry, and is well-suited for industry veterans as ahandy reference. Lecture materials for instructors available at ahref="http://www.wiley.com/go/dasmobile"www.wiley.com/go/dasmobile/a

Design, User Experience, and Usability: Web, Mobile, and Product Design

Second International Conference, DUXU 2013, Held as Part of HCI International 2013, Las Vegas, NV, USA, July 21-26, 2013, Proceedings

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Author: Aaron Marcus

Publisher: Springer

ISBN: 3642392539

Category: Computers

Page: 758

View: 1726

The four-volume set LNCS 8012, 8013, 8014 and 8015 constitutes the proceedings of the Second International Conference on Design, User Experience, and Usability, DUXU 2013, held as part of the 15th International Conference on Human-Computer Interaction, HCII 2013, held in Las Vegas, USA in July 2013, jointly with 12 other thematically similar conferences. The total of 1666 papers and 303 posters presented at the HCII 2013 conferences was carefully reviewed and selected from 5210 submissions. These papers address the latest research and development efforts and highlight the human aspects of design and use of computing systems. The papers accepted for presentation thoroughly cover the entire field of Human-Computer Interaction, addressing major advances in knowledge and effective use of computers in a variety of application areas. The total of 282 contributions included in the DUXU proceedings were carefully reviewed and selected for inclusion in this four-volume set. The 83 papers included in this volume are organized in the following topical sections: DUXU in business and the enterprise, designing for the Web experience; product design; information and knowledge design and visualisation; and mobile applications and services.

Designing Mobile Service Systems

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Author: Els van de Kar,Alexander Verbraeck

Publisher: IOS Press

ISBN: 1586039199

Category: Technology & Engineering

Page: 236

View: 6988

Part of the Research in Design series, this book contributes to the development of a design language for the service domain.

Mobile Ad Hoc Robots and Wireless Robotic Systems: Design and Implementation

Design and Implementation

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Author: Santos, Raul Aquino

Publisher: IGI Global

ISBN: 1466626895

Category: Technology & Engineering

Page: 344

View: 3852

The emergence of wireless robotic systems has provided new perspectives on technology. With the combination of disciplines such as robotic systems, ad hoc networking, telecommunications and more, mobile ad hoc robots have proven essential in aiding future possibilities of technology. Mobile Ad Hoc Robots and Wireless Robotic Systems: Design and Implementation aims to introduce robotic theories, wireless technologies, and routing applications involved in the development of mobile ad hoc robots. This reference source brings together topics on the communication and control of network ad hoc robots, describing how they work together to carry out coordinated functions.

Mobile Communications

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Author: V. Jeyasri Arokiamary

Publisher: Technical Publications

ISBN: 9788184313888

Category:

Page: 650

View: 4854

Cellular Concept and System Design Fundamentals Wireless Communication : Evolution of mobile communications, Mobile radio systems - Examples, Trends in cellular radio and personal communications.Cellular Concept : Frequency reuse, Channel assignment, Handoff, Interference and system capacity, Tracking and grade of service, Improving coverage and capacity in cellular systems.Mobile Radio Propagation Free space propagation model, Reflection, Diffraction, Scattering, Link budget design, Outdoor propagation models, Indoor propagation models, Small scale multipath propagation, Impulse model, Small scale multipath measurements, Parameters of mobile multipath channels, Types of small scale fading, Statistical models for multipath fading channels.Modulation Techniques and Equalization Modulation Techniques : Minimum shift keying, Gaussian MSK, M-ary QAM, M-ary FSK, Orthogonal frequency division multiplexing, Performance of digital modulation in slow-flat fading channels and frequency selective mobile channels. Equalization : Survey of equalization techniques, Linear equalization, Non-linear equalization, Algorithms for adaptive equalization, Diversity techniques, RAKE receiver.Coding and Multiple Access Techniques Coding : Vocoders, Linear predictive coders, Selection of speech coders for mobile communication, GSM codec, RS codes for CDPD. Multiple Access Techniques : FDMA, TDMA, CDMA, SDMA, Capacity of cellular CDMA and SDMA.Wireless Systems and Standards Second generation and third generation wireless networks and standards, WLL, Bluetooth, AMPS, GSM, IS-95 and DECT.

Wireless Communications

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Author: T. L. Singal

Publisher: Tata McGraw-Hill Education

ISBN: 9780070681781

Category: Wireless communication systems

Page: 669

View: 5680

Transmission Systems Design Handbook for Wireless Networks

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Author: Harvey Lehpamer

Publisher: Artech House

ISBN: 9781580535540

Category: Technology & Engineering

Page: 636

View: 2141

This practical new resource gives you a comprehensive understanding of the design and deployment of transmission networks for wireless applications. From principles and design, to equipment procurement, project management, testing, and operation, it's a practical, hands-on engineering guide with numerous real-life examples of turn-key operations in the wireless networking industry. This book, written for both technical and non-technical professionals, helps you deal with the costs and difficulties involved in setting up the local access with technologies that are still in the evolutionary stage. Issues involved in the deployment of various transmission technologies, and their impact on the overall wireless network topology are discussed. Strategy and approach to transmission network planning, design and deployment are explored. The book offers practical guidelines and advice derived from the author's own experience on projects worldwide. You gain a solid grounding in third generation wireless networks with increased capacity requirements, while learning all about packet data architecture, and how it will impact future transmission network design and deployment.

On the Move to Meaningful Internet Systems: OTM 2008 Workshops

OTM Confederated International Workshops and Posters, ADI, AWeSoMe, COMBEK, EI2N, IWSSA, MONET, OnToContent & QSI, ORM, PerSys, RDDS, SEMELS, and SWWS 2008, Monterrey, Mexico, November 9-14, 2008, Proceedings

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Author: Robert Meersman,Zahir Tari

Publisher: Springer Science & Business Media

ISBN: 3540888748

Category: Computers

Page: 1090

View: 6174

This two-volume set LNCS 5331/5332 constitutes the refereed proceedings of the five confederated international conferences on Cooperative Information Systems (CoopIS 2008), Distributed Objects and Applications (DOA 2008), Grid computing, high performAnce and Distributed Applications (GADA 2008), Information Security (IS 2008), and Ontologies, Databases and Applications of Semantics (ODBASE 2008), held as OTM 2008 in Monterrey, Mexico, in November 2008. The 86 revised full and 9 revised short papers presented together with 5 invited papers and 4 keynote talks were carefully reviewed and selected from a total of 292 submissions. Corresponding to the five OTM 2008 main conferences CoopIS, DOA, GADA, IS, and ODBASE the papers are organized in topical sections on Web service, business process technology, E-service management, distributed process management, schema matching, business process tracing, workflow and business applications, designing distributed systems, context in distributed systems, high availability, adaptive distributed systems, scheduling allocation, databases in grids, grid applications, data management and storage, new tendencies and approaches, intrusion detection, information hiding, data and risk management, access control, evaluation and implementation, semantic matching and similarity measuring, semantic searching, ontology development, ontology maintanence and evaluation, ontology applications, and semantic query processing.

Mobile Communications Design Fundamentals

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Author: William C. Y. Lee

Publisher: John Wiley & Sons

ISBN: 0470932260

Category: Technology & Engineering

Page: 398

View: 2407

Revised and enlarged version that discusses how to design a mobile communications system. Comprehensively examines the mobile radio environment. Covers prediction of propagation loss, calculation and methods of reducing fades, interference, frequency plans and associated schemes, design parameters, signaling and channel access, cellular CDMA, microcell systems, and miscellaneous related systems. Contains chapter-by-chapter references and problems.

OFDMA Mobile Broadband Communications

A Systems Approach

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Author: Junyi Li,Xinzhou Wu,Rajiv Laroia

Publisher: Cambridge University Press

ISBN: 1107001609

Category: Computers

Page: 519

View: 1662

The pioneers of Flash-OFDM present OFDMA from first principles, enabling readers to apply theory to practice and understand mobile broadband.

Distributed Embedded Systems: Design, Middleware and Resources

IFIP 20th World Computer Congress, TC10 Working Conference on Distributed and Parallel Embedded Systems (DIPES 2008), September 7-10, 2008, Milano, Italy

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Author: Bernd Kleinjohann,Lisa Kleinjohann,Marilyn Wolf

Publisher: Springer Science & Business Media

ISBN: 0387096604

Category: Computers

Page: 226

View: 5394

This year, the IFIP Working Conference on Distributed and Parallel Embedded Sys tems (DIPES 2008) is held as part of the IFIP World Computer Congress, held in Milan on September 7 10, 2008. The embedded systems world has a great deal of experience with parallel and distributed computing. Many embedded computing systems require the high performance that can be delivered by parallel computing. Parallel and distributed computing are often the only ways to deliver adequate real time performance at low power levels. This year’s conference attracted 30 submissions, of which 21 were accepted. Prof. Jor ̈ g Henkel of the University of Karlsruhe graciously contributed a keynote address on embedded computing and reliability. We would like to thank all of the program committee members for their diligence. Wayne Wolf, Bernd Kleinjohann, and Lisa Kleinjohann Acknowledgements We would like to thank all people involved in the organization of the IFIP World Computer Congress 2008, especially the IPC Co Chairs Judith Bishop and Ivo De Lotto, the Organization Chair Giulio Occhini, as well as the Publications Chair John Impagliazzo. Further thanks go to the authors for their valuable contributions to DIPES 2008. Last but not least we would like to acknowledge the considerable amount of work and enthusiasm spent by our colleague Claudius Stern in preparing theproceedingsofDIPES2008. Hemadeitpossibletoproducethemintheircurrent professional and homogeneous style.

Mobile World

Past, Present and Future

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Author: Lynne Hamill,Amparo Lasen

Publisher: Springer Science & Business Media

ISBN: 1846282047

Category: Computers

Page: 218

View: 8783

There is a growing body of interesting research exploring the social shaping of mobile phones, covering a wide range of topics, from new forms of communication, to the changes in time organization, the uses of public places, the display of emotions and the formation and sustaining of communities. This book evaluates the launch and adoption of mobile phones, drawing out lessons for the future. In particular, it explores how social scientists can collaborate with designers and engineers in the development of new devices and uses. It will interest people from both industry and academia. Those working in the mobile communications industry in strategy, design and marketing will find this book of particular interest. In academia, undergraduate and postgraduate students, as well as researchers in a wide range of social science fields will find it a useful reference: sociologists, economists, psychologists in areas such as Science and Technology studies; Cultural studies and New Media studies.

Autonomous Mobile Robots

Sensing, Control, Decision Making and Applications

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Author: Shuzhi Sam Ge

Publisher: CRC Press

ISBN: 1420019449

Category: Technology & Engineering

Page: 736

View: 9807

It has long been the goal of engineers to develop tools that enhance our ability to do work, increase our quality of life, or perform tasks that are either beyond our ability, too hazardous, or too tedious to be left to human efforts. Autonomous mobile robots are the culmination of decades of research and development, and their potential is seemingly unlimited. Roadmap to the Future Serving as the first comprehensive reference on this interdisciplinary technology, Autonomous Mobile Robots: Sensing, Control, Decision Making, and Applications authoritatively addresses the theoretical, technical, and practical aspects of the field. The book examines in detail the key components that form an autonomous mobile robot, from sensors and sensor fusion to modeling and control, map building and path planning, and decision making and autonomy, and to the final integration of these components for diversified applications. Trusted Guidance A duo of accomplished experts leads a team of renowned international researchers and professionals who provide detailed technical reviews and the latest solutions to a variety of important problems. They share hard-won insight into the practical implementation and integration issues involved in developing autonomous and open robotic systems, along with in-depth examples, current and future applications, and extensive illustrations. For anyone involved in researching, designing, or deploying autonomous robotic systems, Autonomous Mobile Robots is the perfect resource.

OFDMA System Analysis and Design

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Author: Samuel C. Yang

Publisher: Artech House

ISBN: 1608070778

Category: Computers

Page: 318

View: 6463

HereOCOs a unique resource that provides you with an up-to-date understanding of how to plan, analyze, and design next-generation broadband wireless networks. This comprehensive book includes all the necessary background information needed to fully understand the material and places emphasis on practical engineering know-how that can be readily applied to designing OFDM-based systems. You find detailed discussions on everything from the physical and media access control layers, to QoS and security functions.Rather than just offering simple explanations of standards, this invaluable book takes a close look at live, real-world systems, explaining how the technical features work and why they were adopted. Moreover, the author includes his own design frameworks and rules that have been developed through his own extensive research and experience. This comprehensive reference is supported with over 170 illustrations and more than 250 equations."

Mobile Robots

New Research

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Author: John X. Liu

Publisher: Nova Publishers

ISBN: 9781594543593

Category: Technology & Engineering

Page: 379

View: 4004

Cybersecurity refers to three things: measures to protect information technology; the information it contains, processes, and transmits, and associated physical and virtual elements (which together comprise cyberspace); the degree of protection resulting from application of those measures; and the associated field of professional endeavor. Virtually any element of cyberspace can be at risk, and the degree of interconnection of those elements can make it difficult to determine the extent of the cybersecurity framework that is needed. Identifying the major weaknesses in U.S. cybersecurity is an area of some controversy; the defense against attacks on computer systems and associated infrastructure has appeared to be generally fragmented and varying widely in effectiveness.

Leveraging Applications of Formal Methods, Verification and Validation

Third International Symposium, ISoLA 2008, Porto Sani, Greece, October 13-15, 2008, Proceedings

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Author: Tiziana Margaria,Bernhard Steffen

Publisher: Springer Science & Business Media

ISBN: 3540884793

Category: Computers

Page: 869

View: 7650

This volume contains the conference proceedings of ISoLA 2008, the Third International Symposium on Leveraging Applications of Formal Methods, Verification and Validation, which was held in Porto Sani (Kassandra, Chalkidiki), Greece during October 13–15, 2008, sponsored by EASST and in cooperation with the IEEE Technical Committee on Complex Systems. Following the tradition of its forerunners in 2004 and 2006 in Cyprus, and the ISoLA Workshops in Greenbelt (USA) in 2005 and in Poitiers (France) in 2007, ISoLA 2008 provided a forum for developers, users, and researchers to discuss issues related to the adoption and use of rigorous tools and methods for the specification, analysis, verification, certification, construction, test, and maintenance of systems from the point of view of their different application domains. Thus, the ISoLA series of events serves the purpose of bridging the gap between designers and developers of rigorous tools, and users in engineering and in other disciplines, and to foster and exploit synergetic relationships among scientists, engineers, software developers, decision makers, and other critical thinkers in companies and organizations. In p- ticular, by providing a venue for the discussion of common problems, requirements, algorithms, methodologies, and practices, ISoLA aims at supporting researchers in their quest to improve the utility, reliability, flexibility, and efficiency of tools for building systems, and users in their search for adequate solutions to their problems.