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Books > Professional & Technical > Electronics & communications engineering > Communications engineering / telecommunications > Telephone technology
Emerging Location Aware Broadband Wireless Ad Hoc Networks is a compilation of new material on wireless networking and technology addressing several technical challenges in the field. The contributions are authored by distinguished experts who presented experimental results on their work at the recent International Symposium on Personal, Indoor, Mobile, Radio Communications (PIMRC) held in Barcelona, Spain, September 5-8, 2004. The authors present new results on issues involving wireless LANs and ad hoc networks; mobile wireless internet and satellite applications; encoding, algorithms and performance; and issues related to overlay networks, cross layer interactions and smart antennas. Whether you re a telecommunications/networking specialist, systems engineer or a scientist, Emerging Location Aware Broadband Wireless Ad Hoc Networks provides valuable insight from experts in wireless networking for developing wireless systems and meeting future application requirements.
Get more out of your coding with GitHub For today's coders, GitHub is a must. The world's largest software development platform, GitHub helps developers store, track, and collaborate on software projects. In this easy-to-follow Dummies guide, you'll find insight into creating repositories, establishing projects, collaborating, incorporating open-source resources, and establishing yourself as a valued member of the GitHub community. With a working knowledge of GitHub, you'll be a better, more employable programmer. The simple instructions and interactive examples in this book will get you there quickly. Get the instructions you need for using GitHub to collaborate on software projects Become more attractive to employers with knowledge and experience in the largest development platform Set up GitHub Desktop, create a repository, and launch your first project Use GitHub Skills courses to learn new tricks, for beginners to pros You've learned how to write a little code--now learn how to share it with GitHub.
This book investigates the intuitive application of strategic knowledge arbitrage and serendipity (SKARSE) principles by CEOs in their use of mobile electronic devices. CEOs of small to mid-sized organizations are responsible for the income, expenses, and profitability of their respective division and rely heavily on mobile devices for learning, knowledge management, and communication. This book explores the effects of mobile devices on the individual CEO, their interpersonal relationships, and culture. It will benefit students, academics, and business professionals recognize events that can add to knowledge and enhance management skills.
Most of the literature on 5G has been in the form of standards, reports, and industry papers and articles. Because of this, researchers from non-scientific or non-engineering disciplines have struggled to understand how it is or could be operationalized and standardized across the globe. Here Peter Curwen and Jason Whalley offer the first manageable overview of 5G for a non-technical audience. This book provides a full review of the current literature, both academic and professional; an in-depth but non-technical discussion of the historical background of the development of 5G; and a broad, multidisciplinary survey of major issues including spectrum, and the licensing and launch of 5G networks throughout the world, distinguishing standalone 5G from non-standalone 5G. Throughout, there is consideration given to how operators and equipment vendors make money from mobile networks, and where money is potentially to be made in the years to come. Understanding 5G Mobile Networks: A Multidisciplinary Primer is a must-read not only for researchers and students in economics, business, strategy, and operations and logistics, but also for regulators, mobile companies, vertical operators, and anyone else interested in the development of this vital technology.
LTE network capabilities are enhanced with small cell deployment, with optimization and with new 3GPP features. LTE networks are getting high loaded which calls for more advanced optimization. Small cells have been discussed in the communications industry for many years, but their true deployment is happening now. New 3GPP features in Release 12 and 13 further push LTE network performance. This timely book addresses R&D and standardization activities on LTE small cells and network optimization, focusing on 3GPP evolution to Release 13. It covers LTE small cells from specification to products and field results; Latest 3GPP evolution to Release 13; and LTE optimization and learnings from the field.
Following on from the successful first edition (March 2012), this book gives a clear explanation of what LTE does and how it works. The content is expressed at a systems level, offering readers the opportunity to grasp the key factors that make LTE the hot topic amongst vendors and operators across the globe. The book assumes no more than a basic knowledge of mobile telecommunication systems, and the reader is not expected to have any previous knowledge of the complex mathematical operations that underpin LTE. This second edition introduces new material for the current state of the industry, such as the new features of LTE in Releases 11 and 12, notably coordinated multipoint transmission and proximity services; the main short- and long-term solutions for LTE voice calls, namely circuit switched fallback and the IP multimedia subsystem; and the evolution and current state of the LTE market. It also extends some of the material from the first edition, such as inter-operation with other technologies such as GSM, UMTS, wireless local area networks and cdma2000; additional features of LTE Advanced, notably heterogeneous networks and traffic offloading; data transport in the evolved packet core; coverage and capacity estimation for LTE; and a more rigorous treatment of modulation, demodulation and OFDMA. The author breaks down the system into logical blocks, by initially introducing the architecture of LTE, explaining the techniques used for radio transmission and reception and the overall operation of the system, and concluding with more specialized topics such as LTE voice calls and the later releases of the specifications. This methodical approach enables readers to move on to tackle the specifications and the more advanced texts with confidence.
Many wireless systems like GSM, GPRS, UMTS, Bluetooth, WLAN or WiMAX offer possibilities to keep people connected while on the move. In this flood of technology and claims that one single resource will serve all our needs, this book seeks to enable readers to examine and understand each technology, and how to utilise several different systems for the best results. "Communication Systems for the Mobile Information Society" not only contains a technical description of the different wireless systems available today, but also explains the thoughts that are behind the different mechanisms and implementations; not only the 'how' but also the 'why' is in focus. Thus the advantages and also limitations of each technology become apparent. Provides readers with a solid introduction to major global wireless standards and compares the different wireless technologies and their applications Describes the different systems based on the standards, their practical implementation and why they were designed the way they are The performance and capacity of each system in practice is analyzed and explained, accompanied with practical tips on how to discover the functionality of different networks by the readers themselves Questions at the end of each chapter and answers on the accompanying website make this book ideal for self study or as course material Illustrated with many realistic examples of how mobile people can stay in touch with other people, the Internet and their corporate intranet This book is an essential resource for telecommunication engineers, professionals and computer science and electrical engineering students who want to get a thorough end-to-end understandingof the different technical concepts of the systems on the market today.
"UMTS Network Planning, Optimization, and Inter-Operation with GSM" is an accessible, one-stop reference to help engineers effectively reduce the time and costs involved in UMTS deployment and optimization. "Rahnema" includes detailed coverage from both a theoretical and practical perspective on the planning and optimization aspects of UMTS, and a number of other new techniques to help operators get the most out of their networks.Provides an end-to-end perspective, from network design to optimizationIncorporates the hands-on experiences of numerous researchersSingle authorship allows for strong coherency and accessibilityDetails the complete iteration cycle of radio link budgeting for coverage planning and dimensioning "Rahnema" demonstrates detailed formulation of radio capacity and coverage in UMTS, and discusses the tradeoffs involved. He presents complete link budgeting and iterative simulations for capacity and coverage planning, along with practical guidelines. "UMTS Network Planning" contains seventeen cohesive and well-organized chapters which cover numerous topics, including: Radio channel structures, radio channel models, parameters, model tuningTechniques for capacity and coverage enhancementsComplete treatment of power control, handoffs and radio resource practical management processes and parametersDetailed coverage of TCP protocol enhancement for operation over wireless links, particularly UMTSApplication of GSM measurements to plan and re-engineer for UMTS radio sitesGuidelines for site co-location with GSM, the QOS classes, parameters and inter-workings in UMTSAMR voice codecs and tradeoffs, core and access network design, architectural evolution, and protocolsComprehensive discussion and presentation of practical techniques for radio performance analysis, trending, and troubleshooting Perfect for professionals in the field and researchers specializing in network enhancement. Engineers working on other air interfaces and next generation technologies will find many of the techniques introduced helpful in designing and deploying future wireless networks as well. Students and professionals new to the wireless field will also find this book to be a good foundation in network planning, performance analysis, and optimization.
This book provides a comprehensive description of "Radio Access Networks for UMTS" . The main content is based upon the release 6 version of the 3GPP specifications. Changes since the release 99 version are described while some of the new features from the release 7 version are introduced. Starting from the high-level network architecture, the first sections describe the flow of data between the network and end-user. This includes a dedicated chapter describing the Iub transport network. Detailed descriptions of both HSDPA and HSUPA reflect the increasing importance of efficient high data rate connections. Signalling procedures are described for speech, video and PS data connection establishment, SMS data transfer, soft handover and inter-system handover. The more practical subjects of link budgets and radio network planning are also addressed. More than 180 example log files reinforce the reader's understanding Summary bullet points allow rapid access to the most important information Focus upon how data is transferred between the network and end-user Dedicated chapters provide detailed descriptions of both HSDPA and HSUPA Step-by-step analysis of common signalling procedures Key radio network planning subjects addressed "Radio Access Networks for UMTS" is ideal for mobile telecommunications engineers working for equipment vendors, operators and regulators. It will also appeal to system designers, technical managers and students.
Whether used for communication, entertainment, socio-economic growth, crowd-sourcing social and political events, monitoring vital signs in patients, helping to drive vehicles, or delivering education, mobile technology has been transformed from a mode to a medium. Mobile Technology Consumption: Opportunities and Challenges explores essential questions related to the cost, benefit, individual and social impact, and security risks associated with the rapid consumption of mobile technology. This book presents the current state of mobile technologies and their use in various domains including education, healthcare, government, entertainment, and emerging economic sectors.
This book shows how networking research and quality engineering can be combined to successfully manage the transmission quality when speech and video telephony is delivered in heterogeneous wireless networks. Nomadic use of services requires intelligent management of ongoing transmission, and to make the best of available resources many fundamental trade-offs must be considered. Network coverage versus throughput and reliability of a connection is one key aspect, efficiency versus robustness of signal compression is another. However, to successfully manage services, user-perceived Quality of Experience (QoE) in heterogeneous networks must be known, and the perception of quality changes must be understood. These issues are addressed in this book, in particular focusing on the perception of quality changes due to switching between diverse networks, speech and video codecs, and encoding bit rates during active calls.
Combining information on the most important and related technologies in the mobile communications field, this two book package gives the engineer a concise, complete and authoritative introduction to LTE and SAE and The Evolved Packet Core. Written by experts who played a leading role in the development of the standards, this package gives insight into the 'how' and 'why', enabling the professional engineer to implement the technologies that are central to the mobile broadband revolution. Includes details of the standards and technologies with 160 new pages: LTE radio interface architecture, LTE physical layer and LTE access procedures Contains three brand new chapters on LTE: Transmission Procedures, Flexible Bandwidth and LTE Evolution, plus expanded details on the physical layer (total LTE content is 270 pages) Examines the latest developments in the evolution of LTE into IMT-Advanced, the next stage of 3G Evolution Gives clear explanations of the role of OFDM and MIMO technologies in HSPA and LTE Outlines the System Architecture Evolution (SAE) supporting LTE and HSPA evolution Up-to-date coverage of SAE including the latest standards development Easily accessible overview of the architecture and concepts defined by SAE Thorough description of the Evolved Packet Core for LTE, fixed and other wireless accesses Comprehensive explanation of SAE key concepts, security and Quality-of-Service Covers potential service and operator scenarios including interworking with existing 3GPP and 3GPP2 systems Detailed walkthrough of network entities, protocols and procedures Written by established experts in the SAE standardization process, all of whom have extensive experience and understanding of its goals, history and vision
This book offers a technical background to the design and optimization of wireless communication systems, covering optimization algorithms for wireless and 5G communication systems design. The book introduces the design and optimization systems which target capacity, latency, and connection density; including Enhanced Mobile Broadband Communication (eMBB), Ultra-Reliable and Low Latency Communication (URLL), and Massive Machine Type Communication (mMTC). The book is organized into two distinct parts: Part I, mathematical methods and optimization algorithms for wireless communications are introduced, providing the reader with the required mathematical background. In Part II, 5G communication systems are designed and optimized using the mathematical methods and optimization algorithms.
Starting with an overview of current research progresses on multiple access technology, the book then presents the theoretical fundamentals, technical principles, transmission scheme, key technologies and evaluation results of new multi-access technologies, especially focusing on its typical applications 5G communication systems. With extensive practical cases, it is an essential reference for researchers, engineers and graduate students.
A complete and systematic treatment of signal processing for VoIP voice and fax This book presents a consolidated view and basic approach to signal processing for VoIP voice and fax solutions. It provides readers with complete coverage of the topic, from how things work in voice and fax modules, to signal processing aspects, implementation, and testing. Beginning with an overview of VoIP infrastructure, interfaces, and signals, the book systematically covers: Voice compression Packet loss concealment techniques DTMF detection, generation, and rejection Wideband voice modules operation VoIP Voice-Network bit rate calculations VoIP voice testing Fax over IP and modem over IP Country deviations of PSTN mapped to VoIP VoIP on different processors and architectures Generic VAD-CNG for waveform codecs Echo cancellation Caller ID features in VoIP Packetization-RTP, RTCP, and jitter buffer Clock sources for VoIP applications Fax operation on PSTN, modulations, and fax messages Fax over IP payload formats and bit rate calculations Voice packets jitter with large data packets VoIP voice quality Over 100 questions and answers on voice and more than seventy questions and answers on fax are provided at the back of the book to reinforce the topics covered throughout the text. Additionally, several clarification, interpretation, and discussion sections are included in selected chapters to aide in readers' comprehension. VoIP Voice and Fax Signal Processing is an indispensable resource for professional electrical engineers, voice and fax solution developers, product and deployment support teams, quality assurance and test engineers, and computer engineers. It also serves as a valuable textbook for graduate-level students in electrical engineering and computer engineering courses.
Your step-by-step roadmap to unlocking the full potential of your new Galaxy S22 Your new Samsung Galaxy S22 is packed with more features than you can count. So, how should you go about using this fantastic phone to its fullest? With some friendly and expert help from Samsung Galaxy S22 For Dummies! This book on Samsung's latest version of its flagship smartphone will walk you through every important function and feature on the S22. Want to make a call or send an email? Samsung Galaxy S22 For Dummies will show you how to set up your accounts and contacts to help you stay in touch with your friends and family. More interested in playing some new games or using the latest app? Flip to the chapter on accessing the Google Play Store and grab your favorite downloads. You'll find step-by-step descriptions, complete with helpful screenshots and pictures, to help you: Understand the home screen, buttons, and menus of your new phone so you can navigate it with ease Customize your phone with ringtones, wallpapers, lock screens, and widgets Improve your productivity with functional apps like Calendar and GPS Whether this is your first Samsung phone, or just the latest in a long line of them, Samsung Galaxy S22 For Dummies is your secret weapon to unlocking the full potential of one of the most powerful smartphones on the market today.
Mobile Applications Development with Android: Technologies and Algorithms presents advanced techniques for mobile app development, and addresses recent developments in mobile technologies and wireless networks. The book covers advanced algorithms, embedded systems, novel mobile app architecture, and mobile cloud computing paradigms.
Mobile computing technology has come a long way in recent years-providing anytime, anywhere communication and access to information. Bringing students up to date on important technological and industry developments, Principles of Mobile Computing and Communications examines mobile networks and relevant standards, highlighting issues unique to the mobile computing environment and exploring the differences between conventional and mobile applications. Going beyond discussions on wireless network infrastructure and how to develop enterprise mobile applications, this textbook considers pervasive computing and smart environments, the complexity of designing and developing such applications, and how issues are dependent on the context of the applications. Following an overview of what mobile computing has to offer and how its applications affect both our professional and personal lives, it focuses on the technologies and the infrastructure of all mobile and wireless networks, cellular networks, WLANs, WPANs, and sensor and mobile ad hoc networks. The textbook then discusses the Mobile IP, adaptive behavior, power management, resource constraints, interface design, seamless mobility support, and locating sensing techniques and systems. It also discusses important security issues that concern all users regardless of applications employed.
This book presents effective ways to partition mobile devices such that the enterprise system access and its information are completely separated from the personal information. For those using mobile devices for personal and business purposes, the ability to keep the data secure and separate is critical. The applications for security in smart platforms range from personal email accounts to global enterprise systems. Several approaches for mobile virtualization are described, all creating secure and secluded environments for enterprise information. The authors present a reference architecture that allows for integration with existing enterprise mobile device management systems and provides a lightweight solution for containerizing mobile applications. This solution is then benchmarked with several of the existing mobile virtualization solutions across a range of mobile devices. Virtualization Techniques for Mobile Systems is an excellent resource for researchers and professionals working in mobile systems. Advanced-level students studying computer science and electrical engineering will also find the content helpful.
Foodie and food photographer Eveline Boone shows you how to style a dish and make it look tasty, how you can take the most beautiful food photos with your camera or smartphone and the different composition techniques you can apply. With this book she proves that anyone can learn to take mouth-watering photographs as long as you have the right tools at hand.
Mobile Learning and Higher Education provides case studies of mobile learning in higher education settings to showcase how devices can transform learning at the undergraduate and graduate levels. With the rapid diffusion of networked technologies among the adult populations of many countries and the supersession of the once-ubiquitous lecture approach with active learner-centered teaching for deep understanding, mobile devices are increasingly used in higher education classrooms to offer unique and effective new approaches to teaching and learning. A cutting-edge research volume, this collection also provides a springboard for building better practices in higher education institutions.
This book addresses current technology trends and requirements leading towards the next era in mobile communication handsets; and beyond that the book proposes innovative solutions that could be candidate solutions for 5G phones. It adopts a multidisciplinary and interdisciplinary stance towards handset design, a necessary ingredient if 5th Generation handset and services are to really take-off. Therefore the scope of the book targets a broad range of subjects, including energy efficiency, RF design, cooperation, context-aware systems, roaming, and short-range networking, all of which working in synergy to provide seamless mobility and high speed connectivity within a HetNet environment. Specifically, the authors investigate how we can exploit the cooperation paradigm and context-aware mechanism working in synergy to provide energy compliant phones that can introduce power savings of up to 50% on state-of-the-art. Going beyond this, a chapter on business modeling approaches is also included, based on incentive mechanisms for cooperation that will provide the necessary leverage to promote the up-take of the proposed technology.
Learn how to edit photographs on your phone with this step-by-step guide from professional photographer Jo Bradford Do you know how to make the best of the photos you’ve taken with your phone? We all have hundreds of images on our phones that could do with a little improvement, but transferring them to a hard drive and working in an out-of-date editing program on your Mac or PC can seem like too much hassle. Award-winning professional photographer Jo Bradford, author of the bestselling Smart Phone Smart Photography, can show you how to edit your photos easily and conveniently on your iPhone or Android, using the free Snapseed app. Smart Phone Smart Photo Editing shows you how to use the app to do everything from raw developing and saving a copy, to compositional improvements, global enhancements to colour and other elements, and smaller adjustments to specific details. With clear step-by-step text and illustrations for each process, you will soon learn how to get the best from the app and from your images. Case studies and beautiful images taken by Jo will also help to inspire you in your photography.
This brief surveys existing techniques to address the problem of long delays and high power consumption for web browsing on smartphones, which can be due to the local computational limitation at the smartphone (e.g., running java scripts or flash objects) level. To address this issue, an architecture called Virtual-Machine based Proxy (VMP) is introduced, shifting the computing from smartphones to the VMP which may reside in the cloud. Mobile Web Browsing Using the Cloud illustrates the feasibility of deploying the proposed VMP system in 3G networks through a prototype using Xen virtual machines (in cloud) and Android Phones with ATT UMTS network. Techniques to address scalability issues, resource management techniques to optimize the performance of the VMs on the proxy side, compression techniques to further reduce the bandwidth consumption, and adaptation techniques to address poor network conditions on the smartphone are also included. |
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