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Books > Professional & Technical > Electronics & communications engineering > Communications engineering / telecommunications > Telephone technology
Just as the automobile radically changed people's lives at the beginning of the 20th century, so too has the revolution in online services (including blogging, podcasting, videogaming, shopping, and social networking) and cell-phone use changed our lives at the turn of the 21st century. In addition, many other services, activities, and devices—including the Palm Pilot, the BlackBerry, the iPod, digital cameras, and cell cameras—have been made possible by the combination of these two technologies. Whereas the automobile allowed people for the first time to work in cities and live comfortably in the suburbs, extending the long commute beyond the limits previously circumscribed by public transportation, the Internet and cell phone allow us to interact with others from around the world—or a few hundred miles—from where we work or live, giving rise to the telecommuting phenomenon and allowing us to stay in touch with friends and families in the new virtual environment. As Hanson demonstrates in her new book, these technologies enable us to work and play 24/7, anytime, anywhere. What does this mean for us as individuals and for society as a whole? What are the social implications of this technological revolution that we have witnessed in the short span of about 20 years? Do people of different generations use these technologies in the same ways, or do they adopt them to support their communication habits formed at different times of their lives? How does the illusion of control provided by these technologies affect the way we think about what is meaningful in our lives? Hanson examines the wide-ranging impact of this change. How do individuals posting their viewpoints on the Internet affect democracy? Is it possible to ever completely prevent identity theft over the Internet? How permanent is information stored on the Internet or on a hard drive? Do cell phones change the way people think about privacy or the way they communicate with others? Does email? Do videogames teach new social principles? Do cell phones and the Internet change traditional communication behaviors and attitudes? Hanson discusses these crucial issues and explores to what extent individuals do have control, and she assesses how social and governmental services are responding to (or running from) the problems posed by these new technologies.
Multimedia services facilitate the real-time processing and communication of images, audio, and text. The convergence of computer communication and telecommunication has redefined current multimedia services, encouraging the creation of multimedia interfaces for videoconferencing, VoIP, instant messaging, and gaming. Multimedia Services and Streaming for Mobile Devices: Challenges and Innovations provides tutorials, surveys, case descriptions, and original contributions that address current research findings and business success cases in multimedia services and streaming for mobile devices. This publication is useful to researchers, developers, engineers, and innovators working in multimedia services or mobile devices, as well as academics, industry professionals, and researchers who aspire to learn about recent progress and future trends in the field.
As technology advances, mobile devices have become more affordable and useful to countries around the world. As a result, mobile evolution has become an essential part of economic and social advancement. Mobile Technologies and Socio-Economic Development in Emerging Nations provides emerging research on the role of mobile devices as an important aspect of social and economic growth in developing countries. While highlighting topics, such as device authentication, mobile data management, and sensor services, this book explores how mobile devices have evolved to become an extremely useful tool. This book is a vital resource for academicians, researchers, students, practitioners, politicians, and professionals seeking current research on the uses, applications, and advantages of mobile services in increasing economic growth.
Combines in one volume the basics of evolving radio access technologies and their implementation in mobile phones * Reviews the evolution of radio access technologies (RAT) used in mobile phones and then focuses on the technologies needed to implement the LTE (Long term evolution) capability * Coverage includes the architectural aspects of the RF and digital baseband parts before dealing in more detail with some of the hardware implementation * Unique coverage of design parameters and operation details for LTE-A phone transceiver * Discusses design of multi-RAT Mobile with the consideration of cost and form factors * Provides in one book a review of the evolution of radio access technologies and a good overview of LTE and its implementation in a handset * Unveils the concepts and research updates of 5G technologies and the internal hardware and software of a 5G phone
"LTE-Advanced relay technology and standardization" provides a
timely reference work for relay technology with the finalizing of
LTE Release 10 specifications. LTE-Advanced is quickly becoming the
global standard for 4G cellular communications. The relay
technology, as one of the key features in LTE-Advanced, helps not
only to improve the system coverage and capacity, but also to save
the costs of laying wireline backhaul. As a leading researcher in
the field of LTE-Advanced standards, the author provides an
in-depth description of LTE-A relay technology, and explains in
detail the standard specification and design principles. Dr. Yifei Yuan is theTechnical Director at the Standards Department of ZTE Inc."
Mobile is impacting heavily on our society today. In this book, Nicoletti analyzes the application of mobile to the world of financial institutions. He considers future developments and the possible use of mobile to help the transformation in products, processes, organizations and business models of financial institutions globally.
This book provides an accessible introduction to the theoretical foundations of modern coding theory, with many applications to wireless transmission systems. State-of-the-art coding theory is explained based on soft (maximum-likelihood) decoding rather than on algebraic decoding. Convolutional codes, trellis-coded modulation, turbo codes, and low-density parity-check (LDPC) codes are covered, with specific reference to the graphical structures through which they can be described and decoded (trellises and factor graphs). A special section addresses multiple-antenna systems and space-time codes.
Throughout its history, Understanding Telephone Electronics has
been, by far, one of the most popular books on telecommunication
electronics in the trade, electronic distribution, and educational
markets because of its very simple, direct approach to the
technology. In keeping with the distinguished tradition of its
predecessors, Understanding Telephone Electronics, Fourth Edition
covers conventional telephone fundamentals, including both analog
and modern digital communication techniques, and provides basic
information on the functions of each telephone system component,
how electronic circuits generate dial tones, and how the latest
digital transmission techniques work.
The definitive guide to home and small business installation --
extensions, modems and telephone systems.
Describes the technological solutions and standards which will enable the migration of voice and SMS services over to LTE/EPC networks Main drivers for the introduction of Long Term Evolution of UTRAN (LTE) is to provide far better end user experience for mobile broadband services. However, service providers also need to have a clear strategy of how to offer voice and messaging services for consumers and enterprises. The voice service over LTE is becoming increasingly important when the smartphone penetration is increasing rapidly. Smartphones require both good quality voice and high speed broadband data. This book provides the exhaustive view to industry-approved technologies and standards behind the Voice over LTE (VoLTE). Whether a decision maker or technology analyst, this book explains a topic of substantial global market interest. It provides a good introduction to the technology and is useful for operators who may be deploying VoLTE, product managers responsible for VoLTE products and those who work in implementation and standardization of related technologies. * Provides a comprehensive overview of industry-approved technologies and standards, providing vital information for decision makers and those working on the technology * Written by authors working at the cutting edge of mobile communications technology today, bringing a mix of standards and product background, guaranteeing in-depth practical and standards information * Covering the technical and practical elements of VoLTE, explaining the various approaches for providing voice services over LTE
As the IoT market is booming, several issues are delaying the full realization of the technology. IoT devices, in cybersecurity terms, greatly increase security risk. This means that any scientific work that offers cybersecurity strategies will excite security experts who will be glad to expand their knowledge base on IoT cybersecurity. As a result of the booming of the IoT market, business competitors are jockeying for a piece of the market. This means that solutions from researchers that address compatibility issues will be greatly welcomed by IoT technology developers. Connectivity providers are likely to embrace solutions to challenges of bandwidth since a growing IoT market must be followed up by bandwidth-intensive IoT applications which tend to jostle for space on the current client-server model. Overpromising followed by underdelivering, has been the current approach by many innovators and the mismatch results in losses in production, orphaned technologies accompanied by frequent system failures. Solutions that address IoT performance issues are likely to excite many start-ups. Solutions to challenges of fragmentation presented by thousands of devices from different manufacturers operating on proprietary ecosystems are likely to be warmly embraced by many IoT brands developers. As such, a publication that specifically addresses the challenges faced in the rolling out of IoT technologies is sorely needed.
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.
Mobile communications are about to enter the third stage in their development, widely known as 3G. This will bring always-on Internet access to mobile devices. This book investigates the history of mobile communications and explores the technological background to 3G in a user-friendly manner. It examines the licensing process throughout the world, and draws conclusions about the prospects for 3G through a comprehensive analysis of the issues that have been raised so far.
What is "digital telephony"? To the authors, the term digital telephony denotes the technology used to provide a completely digital telecommunication system from end-to-end. This implies the use of digital technology from one end instru ment through transmission facilities and switching centers to another end instru ment. Digital telephony has become possible only because of the recent and on going surge of semiconductor developments, allowing microminiaturization and high reliability along with reduced costs. This book deals with both the future and the present. Thus, the first chapter is entitled, "A Network in Transition." As baselines, Chapters 2 and 11 provide the reader with the present status of teler-hone technology in terms of voice digiti zation as well as switching principles. The book is an outgrowth of the authors' consulting and teaching experience in the field since the early 1980s. The book has been written to provide both the engineering student and the practicing engineer a working knowledge of the prin ciples of present and future telecommunication systems based upon the use of the public switched network. Problems or discussion questions have been included at the ends of the chapters to facilitate the book's use as a senior-level or first year graduate-level course text. Numerous clients and associates of the authors as well as hundreds of others have provided useful information and examples for the text, and the authors wish to thank all those who have so contributed either directly or indirectly."
Recent years have witnessed an explosion of new operators and customers of cellular mobile communications and the importance of wireless/mobile communications in today's telecommunications industry is indisputable.
This book applies the approach of technology assessment to the telephone. The author's analysis forecasts the effect of the telephone on society and compares it with the reality. This book not only examines the social consequences of the telephone, but provides a model for future efficient assessments of new technologies. It documents a largely unknown piece of the history of American technology and anlayzes the requirements for success in technological forecasting.
Is your phone the first thing you reach for when you wake up? And the last thing you see before you sleep? Do you find the hours slip away as you idly scroll through your social media timeline? In short, are you addicted to your phone? If so, How to Break Up with Your Phone is here to help. How to Break Up With Your Phone is a smart, practical and useful plan to help you conquer your mobile phone addiction in just 30 days - and take back your life in the process. Recent studies have shown that spending extended time on our phones affects our ability to form new memories, think deeply, focus and absorb information, and the hormones triggered every time we hear our phones buzz both add to our stress levels and are the hallmark signs of addiction. In How to Break Up with Your Phone, award-winning science journalist Catherine Price explores the effects that our constant connectivity is having on our brains, bodies, relationships, and society at large and asks, how much time do you really want to spend on your phone? Over the course of 30 days, Catherine will guide you through an easy-to-follow plan that enables you to identify your goals, priorities and bad habits, tidy your apps, prune your email, and take time away. Lastly, you will create a new, healthier relationship with your phone and establish habits and routines to ensure this new relationship sticks. You don't have to give up your phone forever; instead you will be more mindful not only of how you use your phone, but also about how you choose to spend the precious moments of your life.
This book describes the physical layer of UMTS (Universal Mobile Telecommunication System) which is one of the five members of the IMT-2000 family of standards. It compiles in a clear fashion the main technical features of the physical layer standard together with a description of the basics of digital communications and spread spectrum technology on which UMTS relies. In addition the test cases specified in the standard are described together with their implications on any practical front-end design. The reader will benefit from the standard description which frees him from studying lots of standardization documents. Additional explanations of the standard and especially the test cases will help to better understand the effects on any front-end system design. Many references are provided for readers interested in in-depth treatments of certain topics. |
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