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Books > Professional & Technical > Electronics & communications engineering > Communications engineering / telecommunications
In this book the authors first describe the background of trusted platforms and trusted computing and speculate about the future. They then describe the technical features and architectures of trusted platforms from several different perspectives, finally explaining second-generation TPMs, including a technical description intended to supplement the Trusted Computing Group's TPM2 specifications. The intended audience is IT managers and engineers and graduate students in information security.
This book highlights the rightful role of citizens as per the constitution of the country for participation in Governance of a smart city using electronic means such as high speed fiber optic networks, the internet, and mobile computing as well as Internet of Things that have the ability to transform the dominant role of citizens and technology in smart cities. These technologies can transform the way in which business is conducted, the interaction of interface with citizens and academic institutions, and improve interactions between business, industry, and city government.
This book offers means to handle interference as a central problem of operating wireless networks. It investigates centralized and decentralized methods to avoid and handle interference as well as approaches that resolve interference constructively. The latter type of approach tries to solve the joint detection and estimation problem of several data streams that share a common medium. In fact, an exciting insight into the operation of networks is that it may be beneficial, in terms of an overall throughput, to actively create and manage interference. Thus, when handled properly, "mixing" of data in networks becomes a useful tool of operation rather than the nuisance as which it has been treated traditionally. With the development of mobile, robust, ubiquitous, reliable and instantaneous communication being a driving and enabling factor of an information centric economy, the understanding, mitigation and exploitation of interference in networks must be seen as a centrally important task.
Based on the author's real-world design experience in this key emerging area, this comprehensive guide examines and compares all major RF power amplifier linearization techniques in detail. Featuring practical tips, more than 250 illustrations, and over 600 verified equations, the book seeks to save the reader valuable design time whilst helping them avoid costly design errors. It covers the modelling and measurement of amplifier non-linearity, and describes the main methods for overcoming non-linearity in a wide range of applications, including: base stations using feedforward and predistortion; mobile communications systems and handsets using RF or digital predistortion, cartesian loop, LINC and envelope elimination and restoration (EECR); and satellite systems.
Multicarrier Modulation with Low PAR: Applications to DSL and Wireless provides the first comprehensive formulation of the PAR problem for multicarrier modulation and proposes three new methods for PAR reduction. The information in this book will be vital to practicing engineers, industrial researchers, scientists, graduate and postgraduate researchers, and others working in multicarrier transmission and communication theory. Multicarrier Modulation with Low PAR: Applications to DSL and Wireless serves as a valuable reference to both design engineers and communications theorists, and can also be used for advanced courses on the subject.
T. Ito, International Space University, Strasbourg Central Campus, 1 Rue Jean Dominique Cassini, Parc d'Innovation, 67400 lllkirch-Graffenstaden, France e-mail: ito@isu. isunet. edu M. J. Rycroft, CAESAR Consultancy, 35 Millington Road, Cambridge CB3 9HW, UK e-mail: Michael. J. Rycroft (R)ukgateway. net As Symposium Committee Chair for the 2003 International Space University (ISU) Symposium, and Editor of this Proceedings volume, respectively, we write this introduction. The success of previous ISU symposia suggests that the ISU has developed a unique and winning formula for a novel type of symposium. The characteristics of ISU symposia are that they: * Adopt a broad, and interdisciplinary, perspective * Address all aspects of the subject, ranging from policy, business, organisational, and legal issues to technical and scientific topics * Foster a constructive dialogue among very different sectors of the space community, and * Allow ample time for interactive discussions. The present Symposium is no exception. It considers the very timely topic of space-based systems for global positioning and navigation, ranging from the GPS system developed by the US military to the Russian GLONASS system, and on to the future European Galileo system. Other nations are planning regional augmentation systems.
The aim of this book is to provide comprehensive coverage of current state of the art theoretical and technological aspects of broadband mobile and wireless networks focusing on Long Term Evolution Network. The presentation starts from basic principles, and proceeds to the most advanced topics. Provided schemes are developed and oriented in the context of actual closed standards of the IEEE working groups and the 3 GPPP LTE. Also this book will focus on the understanding of the LTE technology as well as the study of its performance in terms of mobility, quality of service, security, resource allocation.
This book introduces context-aware computing, providing definitions, categories, characteristics, and context awareness itself and discussing its applications with a particular focus on smart learning environments. It also examines the elements of a context-aware system, including acquisition, modelling, reasoning, and distribution of context. It also reviews applications of context-aware computing - both past and present - to offer readers the knowledge needed to critically analyse how context awareness can be put to use. It is particularly to those new to the subject area who are interested in learning how to develop context-aware computing-oriented applications, as well as postgraduates and researchers in computer engineering, communications engineering related areas of information technology (IT). Further it provides practical know-how for professionals working in IT support and technology, consultants and business decision-makers and those working in the medical, human, and social sciences.
Optical Network Design and Modelling is an essential issue for
planning and operating networks for the next century. The main
issues in optical networking are being widely investigated, not
only for WDM networks but also for optical TDM and optical packet
switching. This book contributes to further progress in optical
network architectures, design, operation and management and covers
the following topics in detail: This book contains the selected proceedings of the Second International Working Conference on Optical Network Design and Modelling, which was sponsored by the International Federation for Information Processing (IFIP), and held in February 1998, in Rome, Italy. This valuable new book will be essential reading for personnel in computer/communication industries, and for academic and research staff in computer science and electrical engineering.
There has continuously been a massive growth of Internet traffic for these years despite the "bubble burst" in year 2000. As the telecom market is gradually picking up, it would be a consensus in telecom and data-com industries that the CAPEX (Capital Expenditures) to rebuild the network infrastructure to cope with this traffic growth would be imminent, while the OPEX (Operational Expenditures) has to be within a tight constraint. Therefore, the newly built 2r DEGREES-century network has to fully evolve from voice-oriented legacy networks, not only by increasing the transmission capacity of WDM links but also by introducing switching technologies in optical domain to provide full-connectivity to support a wide variety of services. This book stems from the technical contributions presented at the Optical Networks and Technology Conference (OpNeTec), inaugurated this year 2004 in Pisa, Italy, and collects innovations of optical network technologies toward the 2V DEGREES century network. High-quality recent research results on optical networks and related technologies are presented, including IP over WDM integration, burst and packet switchings, control and managements, operation, metro- and access networks, and components and devices in the perspective of network application. An effort has been made throughout the conference, hopefully reflected at least partially in this book, to bring together researchers, scientists, and engineers working both academia and industries to discuss the relative impact of networks on technologies and vice versa, with a vision of the fut
In 2007 INTEROP-VLab defined Enterprise Interoperability as the ability of an enterprise system or application to interact with others at a low cost with a flexible approach . Enterprise Interoperability VI brings together a peer reviewed selection of over 40 papers, ranging from academic research through case studies to industrial and administrative experience of interoperability. It shows how, in a scenario of globalised markets, the capacity to cooperate with other firms efficiently becomes essential in order to remain in the market in an economically, socially and environmentally cost-effective manner, and that the most innovative enterprises are beginning to redesign their business model to become interoperable. This goal of interoperability is vital, not only from the perspective of the individual enterprise but also in the new business structures that are now emerging, such as supply chains, virtual enterprises, interconnected organisations or extended enterprises, as well as in mergers and acquisitions. Establishing efficient and relevant collaborative situations requires managing interoperability from a dynamic perspective: a relevant and efficient collaboration of organizations might require adaptation to remain in line with potentially changing objectives, evolving resources, and unexpected events, for example. Many of the papers contained in this, the seventh volume of Proceedings of the I-ESA Conferences have examples and illustrations calculated to deepen understanding and generate new ideas. The I-ESA 14 Conference is jointly organised by Ecole des Mines Albi-Carmaux, on behalf of PGSO, and the European Virtual Laboratory for Enterprise Interoperability (INTEROP-VLab) and supported by the International Federation for Information Processing (IFIP). A concise reference to the state of the art in systems interoperability, Enterprise Interoperability VI will be of great value to engineers and computer scientists working in manufacturing and other process industries and to software engineers and electronic and manufacturing engineers working in the academic environment."
Digital signal processing is an area of science and engineering that has been developed rapidly over the past years. This rapid development is the result of the significant advances in digital computer technology and integrated circuits fabrication. Many of the signal processing tasks conventionally performed by analog means, are realized today by less expensive and often more reliable digital hardware. Multirate Systems: Design and Applications addresses the rapid development of multirate digital signal processing and how it is complemented by the emergence of new applications.
Third generation networks have been specified and are now being deployed in a few countries. They are expected to reach maturity in the next several years and to provide various services including audio, video, and world wide web browsing. Furthermore, radio terminals are expected to be integrated in a number of devices such as personal computers, personal digital assistants, and even television sets. Such a wide-usage of radio mandates ongoing research to address design of networks with high capacity while providing acceptable quality of service. Included in Multiaccess, Mobility and Teletraffic for Wireless Communications: Volume 6 are new results on the optimization of protocols in third generation systems. The radio channel is dynamically shared among several users using packet access, it must adapt to a varying number of users and accomodate various services. Several chapters deal with radio resource management and packet access both in second and third generation systems. The book also considers the performance of low layer protocols (MAC/RLC) and transport protocols (e.g., TCP) when they are combined to offer data services. IPv6 will probably be an in-use network protocol in the near future. It must efficiently manage mobility and support multimedia flows. Wireless internet is an important area and related topics are included in this book. The improvement of the network performance relies on a sophisticated and optimized physical layer. The book includes studies on joint multiple access detection, MIMO systems, use of turbo-codes and methods to improve the analysis of the channel capacity. The book also covers location management, handoff optimization, multi-hop networks andnetwork management. Mobility and Teletraffic for Wireless Communications: Volume 6 is an important book for researchers, students and professionals working in the area of wireless communications and mobile computing.
Adaptive Signal Models: Theory, Algorithms and Audio Applications presents methods for deriving mathematical models of natural signals. The introduction covers the fundamentals of analysis-synthesis systems and signal representations. Some of the topics in the introduction include perfect and near-perfect reconstruction, the distinction between parametric and nonparametric methods, the role of compaction in signal modeling, basic and overcomplete signal expansions, and time-frequency resolution issues. These topics arise throughout the book as do a number of other topics such as filter banks and multiresolution. The second chapter gives a detailed development of the sinusoidal model as a parametric extension of the short-time Fourier transform. This leads to multiresolution sinusoidal modeling techniques in Chapter Three, where wavelet-like approaches are merged with the sinusoidal model to yield improved models. In Chapter Four, the analysis-synthesis residual is considered; for realistic synthesis, the residual must be separately modeled after coherent components (such as sinusoids) are removed. The residual modeling approach is based on psychoacoustically motivated nonuniform filter banks. Chapter Five deals with pitch-synchronous versions of both the wavelet and the Fourier transform; these allow for compact models of pseudo-periodic signals. Chapter Six discusses recent algorithms for deriving signal representations based on time-frequency atoms; primarily, the matching pursuit algorithm is reviewed and extended. The signal models discussed in the book are compact, adaptive, parametric, time-frequency representations that are useful for analysis, coding, modification, and synthesis of natural signals such as audio. The models are all interpreted as methods for decomposing a signal in terms of fundamental time-frequency atoms; these interpretations, as well as the adaptive and parametric natures of the models, serve to link the various methods dealt with in the text. Adaptive Signal Models: Theory, Algorithms and Audio Applications serves as an excellent reference for researchers of signal processing and may be used as a text for advanced courses on the topic.
This book is a comprehensive presentation of recent results and developments on several widely used transforms and their fast algorithms. In many cases, new options are provided for improved or new fast algorithms, some of which are not well known in the digital signal processing community. The book is suitable as a textbook for senior undergraduate and graduate courses in digital signal processing. It may also serve as an excellent self-study reference for electrical engineers and applied mathematicians whose work is related to the fields of electronics, signal processing, image and speech processing, or digital design and communication.
This book introduces wireless personal communications from the point of view of wireless communication system researchers. Existing sources on wireless communications put more emphasis on simulation and fundamental principles of how to build a study model. In this volume, the aim is to pass on to readers as much knowledge as is essential for completing model building of wireless communications, focusing on wireless personal area networks (WPANs). This book is the first of its kind that gives step-by-step details on how to build the WPANs simulation model. It is most helpful for readers to get a clear picture of the whole wireless simulation model by being presented with many study models. The book is also the first treatise on wireless communication that gives a comprehensive introduction to data-length complexity and the computational complexity of the processed data and the error control schemes. This volume is useful for all academic and technical staff in the fields of telecommunications and wireless communications, as it presents many scenarios for enhancing techniques for weak error control performance and other scenarios for complexity reduction of the wireless data and image transmission. Many examples are given to help readers to understand the material covered in the book. Additional resources such as the MATLAB codes for some of the examples also are presented.
Applications of some selected soft computing methods to acoustics
and sound engineering are presented in this book. The aim of this
research study is the implementation of soft computing methods to
musical signal analysis and to the recognition of musical sounds
and phrases. Accordingly, some methods based on such learning
algorithms as neural networks, rough sets and fuzzy-logic were
conceived, implemented and tested. Additionally, the
above-mentioned methods were applied to the analysis and
verification of subjective testing results. The last problem
discussed within the framework of this book was the problem of
fuzzy control of the classical pipe organ instrument.
Low probability of intercept (LPI) radar is increasingly critical to covert surveillance, target tracking and stealth operations - as is the capability to detect it. Now, the world's most authoritative book on LPI emitter design and counter-LPI techniques explores the latest advances in the field in a new edition complete with ready-to-use MATLAB software simulations for every LPI modulation in the book. Supported by 360 task-clarifying illustrations, the book offers radar engineers expert guidance on the design of LPI emitter and intercept receivers and the development of digital signal processing techniques for detecting and classifying LPI modulations. This titleincludes a CD-ROM! It contains valuable MATLAB programs that help professionals design various LPI emitter architectures and waveform modulations to help them with their detection and classification work.
This book provides the knowledge and good design practice for the
design or test engineer to take the necessary measures to improve
EMC performance and therefore the chance of achieving compliance,
early on in the design process.
Wireless ad hoc networks, mobile or static, have special resource requirements and different topology features, which make them different from classic computer networks in resource management, routing, media access control, and QoS provisioning. The book presents papers written by distinguished researchers in the field and focuses on the theoretical and experimental study of the following advanced research topics: security and trust, broadcasting and multicasting; power control and energy efficiency, and QoS provisioning. This book is a great reference tool for graduate students, researchers, and mathematicians interested in studying mobile ad hoc and sensor networks.
Automatic modulation recognition is a rapidly evolving area of signal analysis. In recent years, interest from the academic and military research institutes has focused around the research and development of modulation recognition algorithms. Any communication intelligence (COMINT) system comprises three main blocks: receiver front-end, modulation recogniser and output stage. Considerable work has been done in the area of receiver front-ends. The work at the output stage is concerned with information extraction, recording and exploitation and begins with signal demodulation, that requires accurate knowledge about the signal modulation type. There are, however, two main reasons for knowing the current modulation type of a signal; to preserve the signal information content and to decide upon the suitable counter action, such as jamming. Automatic Modulation Recognition of Communications Signals describes in depth this modulation recognition process. Drawing on several years of research, the authors provide a critical review of automatic modulation recognition. This includes techniques for recognising digitally modulated signals. The book also gives comprehensive treatment of using artificial neural networks for recognising modulation types. Automatic Modulation Recognition of Communications Signals is the first comprehensive book on automatic modulation recognition. It is essential reading for researchers and practising engineers in the field. It is also a valuable text for an advanced course on the subject.
Multi-Carrier Digital Communications Theory and Applications of OFDM, Second Edition Multi-carrier modulation, Orthogonal Frequency Division Multiplexing (OFDM) particularly, has been successfully applied to a wide variety of digital communications applications over the past several years. OFDM has been chosen as the physical layer standard for a variety of important systems and its implementation techniques continue to evolve rapidly. This book is a valuable summary of the technology, providing an understanding of new advances as well as the present core technology. A unified presentation of OFDM performance and implementation over a wide variety of channels, including both wireline and wireless systems, is made. This will prove valuable both to developers of such systems and to researchers and graduate students involved in analysis of digital communications. In the interest of brevity, the authors have minimized treatment of more general communication issues. There exist many excellent texts on communication theory and technology. Only brief summaries of topics not specific to multi-carrier modulation are presented in this book where essential. As a background, it is assumed that the reader has a clear knowledge of basic fundamentals of digital communications. Highlights of the Second Edition During the past few years since the publication of the first edition of this text, the technology and application of OFDM have continued their rapid pace of advancement. As a result, it became clear that a new edition of the text would be highly desirable. The new edition provides the opportunity to make those corrections and clarifications whose needbecame apparent from continued discussions with many readers. However, the main purpose is to introduce new topics that have come to the forefront during the past few years, and to amplify the treatment of other subject matter. Because of the particularly rapid development of wireless systems employing OFDM, the authors introduced a section early in the text on wireless channel fundamentals. They have extended and modified their analysis of the effects of clipping, including new simulation results. A section of channel estimation has been added to the chapter on equalization. The chapter on local area networks has been greatly expanded to include the latest technology and applications. Three totally new chapters are added, on OFDM multiple access technology, on ultra wideband technology, and on WiMAX (IEEE 802.16). Organization of This Book The authors begin with a historical overview of multi-carrier communications, wherein its advantages for transmission over highly dispersive channels have long been recog-nized, particularly before the development of equalization techniques. They then focus on the bandwidth efficient technology of OFDM, in particular the digital signal processing techniques that have made the modulation format practical. Several chapters describe and analyze the sub-systems of an OFDM implementation, such as clipping, synchronization channel estimation, equalization, and coding. Analysis of performance over channels with various impairments is presented. The book continues with descriptions of three very important and diverse applications of OFDM that have been standardized and are now being deployed. ADSL provides access to digitalservices at several Mbps over the ordinary wire-pair connection between customers and the local telephone company central office. Digital broadcasting enables the radio reception of high-quality digitized sound and video. A unique configuration that is enabled by OFDM is the simultaneous transmission of identical signals by geographically dispersed transmitters. And, the new development of wireless LANs for multi-Mbps communications is presented in detail. Each of these successful applications required the development of new fundamental technology. Finally, the book concludes with describing the OFDM based multiple access techniques, ultra wideband technology and WiMAX. |
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