Kommunikationsteknik / telekommunikation

This textbook presents the fundamental concepts and theories in electromagnetic theory in a very simple, systematic, and comprehensive way. The book is written in a lucid manner so that they are able to understand the realization behind the mathematical concepts which are the backbone of this subject. All the subject fundamentals and related derivations are discussed in an easy and comprehensive way to make the students strong about the basics of the electromagnetic theory. The philosophy of presentation and material content in the book is based on concept-based approach toward the subject. The key features also lies in the solutions of several interesting numerical problems so that the students should have the idea of the practical usages of the subject. The book benefits students who are taking introductory courses in electromagnetic wave and field theory for applications in communication engineering.

This book presents some of the most advanced leading-edge technology for the fourth Industrial Revolution -- known as ¿Industry 4.0.¿ The book provides a comprehensive understanding of the interconnections of AI, IoT, big data and cloud computing as integral to the technologies that revolutionize the way companies produce and distribute products and the way local governments deliver their services. The book emphasizes that at every phase of the supply chain, manufactures are found to be interweaving AI, robotics, IoT, big data/machine learning, and cloud computing into their production facilities and throughout their distribution networks. Equally important, the authors show how their research can be applied to computer vision, cyber security, database and compiler theory, natural language processing, healthcare, education and agriculture.Presents the fundamentals of AI, IoT, and cloud computing and how they can be incorporatedin Industry 4.0 applicationsMotivates readers to address challenges in the areas of speech communication and signal processingProvides numerous examples, case studies, technical descriptions, and approaches of AI/ML

This book introduces a unique perspective on the use of data from popular emerging technologies and the effect on user quality of experience (QoE). The term data is first refined into specific types of data such as financial data, personal data, public data, context data, generated data, and the popular big data. The book focuses the responsible use of data, with consideration to ethics and wellbeing, in each setting. The specific nuances of different technologies bring forth interesting case studies, which the book breaks down into mathematical models so they can be analyzed and used as powerful tools. Overall, this perspective on the use of data from popular emerging technologies and the resulting QoE analysis will greatly benefit researchers, educators and students in fields related to ICT studies, especially where there is additional interest in ethics and wellbeing, user experience, data management, and their link to emerging technologies.

The book focuses on utilizing sparse signal processing techniques in designing massive MIMO communication systems. As the number of antennas has been increasing rapidly for years, extremely high-dimensional channel matrix and massive user access urge for algorithms with much higher efficiency. This book provides in-depth discussions on compressive sensing techniques and simulates the performance on wireless systems. The easy-to-understand instructions with detailed simulations and open-sourced codes provide convenience for readers such as researchers, engineers, and graduate students in the fields of wireless communications.

This book is a collection of selected high-quality research papers presented at International Conference on Paradigms of Communication, Computing and Data Analytics (PCCDA 2023), held at South Asian University, New Delhi, India, during 22¿23 April 2023. It discusses cutting-edge research in the areas of advanced computing, communications and data science techniques. The book is a collection of latest research articles in computation algorithm, communication and data sciences, intertwined with each other for efficiency.

This book systematically summarizes the development process of China Internet in 2020, reveals the strong impact of Internet on China's economic development and social progress, and displays the course of the Chinese people's changes from beneficiary and participant to builder, contributor, and joint maintainer of cyberspace development and security during the Internet development; objectively reflects the development achievements, development status, and development trend of China Internet in 2020, systematically summarizes the main experience in the development of China Internet, and deeply analyzes China's strategic planning, policy actions, development results, practical level and future trend in information infrastructure, network information technology, digital economy, E-government, construction and management of network contents, network security, legal construction of cyberspace, international cyberspace governance, and other aspects; further improves the index system for the development of China Internet and makes an overall assessment of network security and informatization work in 31 provinces (autonomous regions and municipalities directly under the central government, excluding Hong Kong, Macao, and Taiwan) throughout China from 6 aspects, in the hope of reflecting the Internet development level throughout China and individual places comprehensively and accurately.With the important thoughts of General Secretary Xi Jinping on the national cyber development strategy as the main line running through the book, this book collects the latest research results in the domestic Internet field and utilizes the latest cases and authoritative data; featuring rich contents and highlights, this book helps the public readers to better comprehend the rich implications, spiritual essence, and practice requirements of the Internet governance concepts, thoughts, and opinions of General Secretary Xi Jinping and provides an important reference value for the employees in the Internet fields, such as government departments, Internet enterprises, scientific research institutions, colleges, and universities to fully understand and master the development of the China Internet.

Das Buch vermittelt ausgehend von den Grundlagen der Netzwerk-Theorie neuartige Analyse- und Syntheseverfahren für lineare zeitinvariante Kirchhoff-Netzwerke. Hierzu verwendet der Autor als Elementarnetzwerke gewöhnliche Widerstände, Kondensatoren und Spulen sowie die sogenannten pathologischen Unternetzwerke Nullator, Norator und Nullor. Der Nullor besteht dabei aus einem Nullator und einem Norator, wird hinsichtlich seines Klemmenverhaltens durch die Belevitch-Darstellung beschrieben und näherungsweise durch einen Operationsverstärker realisiert. Zur Analyse oder Synthese erfolgt die  Zerlegung in realisierbare Unternetzwerke mit dem Verfahren der  Singulärwert-Zerlegung von Matrizen. Außerdem zeigt Reiner Thiele, wie durch die Applikation von Klemmen-Äquivalenzen praxisrelevante elektrische oder elektronische Schaltungen entstehen.Der InhaltSpannungs-Strom-RelationenKirchhoff-GesetzeNetzwerk-EigenschaftenUnternetzwerkeAnalyse resistiver und dynamischer NetzwerkeBelevitch-DarstellungSynthese resistiver und dynamischer NetzwerkeDie ZielgruppenStudierende und Dozierende der Fachgebiete Elektrotechnik/Elektronik und Informationstechnik/Technische Informatik sowie Technische Mathematik und PhysikIngenieurinnen und Ingenieure, die sich mit Netzberechnung und Netzwerkentwurf befassenDer AutorProf. Dr.-Ing. Reiner Thiele lehrte an der Hochschule Zittau/Görlitz und an der Staatlichen Studienakademie Bautzen.

This book systematically reviews the development process of the world Internet and comprehensively reveals the great contributions of the Internet to economic development and social progress. The world today is marked by changes unseen in a century, and Internet development is facing new opportunities and challenges. In 2020, the COVID-19 epidemic broke out and spread at the global scale, which enormously impacted the global economy and society. Internet played an increasingly important role.Meanwhile, based on the development status of the global Internet, this book fully reflects the development process, status and trend of the world Internet in 2020, systematically summarizes the development status and highlights of the Internet in the major countries around the world, and makes an in-depth analysis of the new conditions, new dynamics and new trends of the development in the key Internet fields; the contents cover the information infrastructure, information technology, digital economy, digital government, internet media, network security, and international cyberspace governance, and other aspects. Moreover, this book further adjusts and enriches the development index systems of the world Internet, in the hope of better showing the development strength and development advantages of the Internet in various countries, and reflecting the overall development trend of the world Internet more comprehensively, accurately and objectively.From an objective perspective, this book collects the latest research results in the global internet field, featuring comprehensive contents and highlights; from a historical perspective, this book reviews the significant development process of the global internet, summarizes the experience and faces the future; from a global perspective, this book tries to construct the cyberspace community with a common future based on the new concepts, new ideas and new achievements of various countries in participating in cyberspace development and construction. This book provides an important reference value for employees in Internet fields, such as government departments, Internet enterprises, scientific research institutions, colleges and universities, to fully understand and master the development of the world internet.

This book is a complete guide for television and podcast researchers and associate producers.

The book gives a detailed description of optical wireless communication (OWC), including optical laser communication, visible light communication, ultraviolet communication, underwater optical communication and future communication technologies. To achieve an integration between theory and practice, the book avoids tedious mathematical deductions and includes theoretical materials as exercises. Most of the exercises are originated from published journal articles. These exercises will aid the readers in understanding the basic concept and methods and evaluating their knowledge acquisition in the field of OWC. The book is structured into Ten chapters that covers main aspects of OWC:- Optical wireless communication system- Coherent optical communication- Modulation, demodulation, and coding- Atmospheric channel, channel estimation, and channel equalization- White LED communication- Underwater laser communication- Ultraviolet communication- Acquisition, aiming, and tracking technology- Partially coherent optical transmission- Optical communication in the futureThe book is a suitable reference for undergraduate or postgraduate students majored in communication engineering, electronic information engineering or computer science, as well as the engineers and technicians in related fields.

"This is the first book on cryptoeconomics written from an academic perspective, reviewing research challenges and existing literature. It illustrates how game theory and algorithmic mechanism design applies to the analysis and design of blockchain network protocols, providing a vital resource for students and scholars of this budding field"--

This book provides latest research findings, methods and development techniques, challenges and solutions from both theoretical and practical perspectives related to Ubiquitous and Pervasive Computing (UPC) with an emphasis on innovative, mobile and internet services. With the proliferation of wireless technologies and electronic devices, there is a fast-growing interest in UPC, which enables to create a human-oriented computing environment where computer chips are embedded in everyday objects and interact with the physical world. Through UPC, people can be online even while moving around, thus having almost permanent access to their preferred services. With a great potential to revolutionize our lives, UPC also poses new research challenges.

While the 5th Generation (5G) system is being widely deployed across the globe, the information and communication technology (ICT) industry, research, standardization and consensus building for the 6th generation (6G) are already well underway with high expectations towards the merger of digital, physical, and human worlds. The main goal of this book is to introduce the upcoming 6G technologies and outline the foreseen challenges, enablers, and architectural design trends that will be instrumental in realizing a Sustainable and Trustworthy 6G system in the coming years.The envisioned 6G system promises to offer a more advanced and comprehensive user experience not only by achieving higher speeds, larger capacity, and lower latency, but also much more improved reliability, greater energy efficiency, and an enhanced security and privacy-preserving framework while natively integrating intelligence end-to-end (E2E). Achieving these goals will require innovative technological solutions and a holistic system design that considers the needs of various stakeholders and future 6G use cases.Capitalizing on the European 5G Public-Private-Partnership (5G PPP) Phase 3 projects working on 5G & Beyond and 6G research in recent years, and the join efforts between the Architecture Working Group (WG) and the 6G flagship Hexa-X project, this book delves into the critical challenges and enablers of the 6G system, including new network architectures and novel enhancements as well as the role of regulators, network operators, industry players, application developers, and end-users. Accordingly, this book provides a comprehensive landscape of the current research activities on 6G in Europe and sets a solid cornerstone on the 6G development towards a more connected, intelligent, and sustainable world.Furthermore, as 5G PPP Phase 3 consists of the last calls of the Horizon 2020 program, this book is aimed to lay the architectural foundation for the next European program towards 6G, i.e., Smart Networks & Services (SNS) Joint Undertaking (JU).

This book discusses Artificial Neural Networks (ANN) and their ability to predict outcomes using deep and shallow learning principles. The author first describes ANN implementation, consisting of at least three layers that must be established together with cells, one of which is input, the other is output, and the third is a hidden (intermediate) layer. For this, the author states, it is necessary to develop an architecture that will not model mathematical rules but only the action and response variables that control the event and the reactions that may occur within it. The book explains the reasons and necessity of each ANN model, considering the similarity to the previous methods and the philosophical - logical rules.

Optical Communications from a Fourier Perspective: Fourier Theory and Optical Fiber Devices and Systems covers Fourier theory and signal analysis over photonic components, including time lenses in optical communication. Sections cover wave propagation in optical waveguides based on Maxwell equations and the nonlinear Schrödinger equation. Optical Fourier transform in the form of time lens is covered, for example in modulation format conversion and spectrum magnification, and couplers and their use for optical discrete Fourier transformation are also discussed. Other important subjects are discussed such as shot noise, thermal noise and also the basics of four wave mixing in relation to time lenses. Detailed derivations and a deeper background for the chapters are provided in appendices where appropriate. Some of the theory is more generally applicable beyond optical communication and is of relevance also for communications engineering. The Fourier theory dimension of the book presents the relationship between Fourier series and Fourier integrals and also the related Laplace transform.

This book provides an investigative approach to how machine learning is helping to maintain and secure smart cities, including principal uses such as smart monitoring, privacy, reliability, and public protection. The authors cover important areas and issues around implementation roadblocks, ideas, and opportunities in smart city development. The authors also include new algorithms, architectures and platforms that can accelerate the growth of smart city concepts and applications. Moreover, this book provides details on specific applications and case studies related to smart city infrastructures, big data management, and prediction techniques using machine learning.

5G-Netze werden weltweit auf- und ausgebaut. Im Vergleich zu 4G bieten sie nicht nur offensichtliche Vorteile wie höhere Bitraten, sondern hohe Zuverlässigkeit und geringe Latenz, z.B. für Car-to-X-Anwendungen, oder die Einbindung einer sehr hohen Anzahl von Endgeräten, z.B. von Sensoren in einer Smart City. Dieses einzige deutschsprachige Buch zur 5G-Technik beginnt mit der Evolution bei den Mobilfunknetzen hin zu 5G und geht in der Folge auf die Basiskonzepte und -technologien wie NGN, IMS, die Virtualisierung mit NFV und MEC sowie SDN ein. Die besondere Herangehensweise an 5G über Anwendungsfälle und Einsatzszenarien hin zu konkreten Anforderungen sowie die Standardisierung bei ITU und vor allem 3GPP sowie die internationale Regulierung werden aufgezeigt. Breiten Raum nehmen das Design von 5G-Systemen, die 5G-Zugangsnetze inkl. Open-RAN mit ihrer leistungsstarken Übertragungstechnik sowie das Kernnetz mit den innovativen Konzepten der Service Based Architecture und des Network Slicing inkl. Beispielen aus der Netzwerkpraxis ein. Ein 5G-System wird in der Gesamtsicht dargestellt, ergänzt durch einen Blick auf Campusnetze und abgerundet durch einen Überblick über alle relevanten IT Security-Aspekte. Abgeschlossen wird die Gesamtbetrachtung durch einen Blick auf die Umwelteinflüsse durch die elektromagnetische Strahlung, die Energie- und Rohstoffbedarfe sowie das Thema Nachhaltigkeit. Zudem wird die Weiterentwicklung bei 5G beschrieben inkl. eines optimal aufbereiteten Einstiegs in 6G. Hauptziel des Buches ist es, an 5G-Technik und -Anwendungsszenarien interessierten Personen fundiertes 5G-Wissen zu vermitteln und zur weiteren Auseinandersetzung mit diesem Themengebiet anzuregen. Angesprochen sind allgemein technisch Interessierte, speziell Mitarbeitende von öffentlichen und privaten Netzbetreibern. Interesse wird dieses Buch auch in den IT-Abteilungen möglicher 5G-Anwenderfirmen wecken, nicht zuletzt natürlich bei Studierenden der Informatik und Elektrotechnik.

This book provides an overview on the current progresses in artificial intelligence and neural nets in data science. The book is reporting on intelligent algorithms and applications modeling, prediction, and recognition tasks and many other application areas supporting complex multimodal systems to enhance and improve human-machine or human-human interactions. This field is broadly addressed by the scientific communities and has a strong commercial impact since investigates on the theoretical frameworks supporting the implementation of sophisticated computational intelligence tools. Such tools will support multidisciplinary aspects of data mining and data processing characterizing appropriate system reactions to human-machine interactional exchanges in interactive scenarios. The emotional issue has recently gained increasing attention for such complex systems due to its relevance in helping in the most common human tasks (like cognitive processes, perception, learning, communication, and even "rational" decision-making) and therefore improving the quality of life of the end users.

This book discusses the architecture of future wireless networks, reliable communications between different nodes, and energy-efficient resource allocations for achieving sustainable wireless communications. To meet the increasing demands of wireless communication networks and achieve sustainable wireless communications, various promising technologies in this book have been investigated and developed. This book is to present cutting-edge research results on achieving sustainable wireless communications.In particular, the sustainable ultra-dense heterogeneous networks and the sustainability issues of non-orthogonal multiple access are investigated, the performances of cooperative networks with space-time network coding under different scenarios are evaluated, the dynamic estimation for a unified laser telemetry, tracking, and command system is discussed, and the energy-efficient resource allocation schemes are developed for future wireless communication networks. We believe that the results in this book can provide useful insights for the design of future wireless communication networks and achieving sustainable wireless communications. Graduate students, researchers, and engineers in the field of wireless communications can benefit from the book.

The iPhone boot camp for getting the most out of your device iPhone For Dummies is the ultimate user-friendly guide to the iPhone! Whether you're new to the iPhone or just want to get more out of it, this book will show you the essentials you need to know to take full advantage of the major features.

The mobile cellular network has its origins in Telco voice networks, but 5G adopts the principles of modern clouds. This book describes how 5G leverages horizontally scalable microservices, Software-Defined Networking (SDN), and cloud operational practices such as DevOps. It provides a detailed introduction to mobile networking that is understandable to a general computing systems audience.Features:Emphasizes underlying concepts, key principles and design choices, going beyond the acronym soup of standards.Describes the main open source components used to build a private 5G network and the rationale for their selection. Walks through the architecture of 5G from the radio to the mobile core.Includes sample code used in configuration and operations of a real private 5G network deployed across a dozen enterprises."Private 5G networks are something you can touch, code, and deploy yourself. Armed with the knowledge of how 5G access networks work, and with hands-on experience with open source software, just imagine the places you'll go!"- Jennifer Rexford, Princeton University

Communication-Protocol-Based Filtering and Control of Networked Systems is a self-contained treatment of the state of the art in communication-protocol-based filtering and control; recent advances in networked systems; and the potential for application in sensor networks. This book provides new concepts, new models and new methodologies with practical significance in control engineering and signal processing. The book first establishes signal-transmission models subject to different communication protocols and then develops new filter design techniques based on those models and preset requirements for filtering performance. The authors then extend this work to finite-horizon H-infinity control, ultimately bounded control and finite-horizon consensus control. The focus throughout is on three typical communications protocols: the round-robin, random-access and try-once-and-discard protocols, and the systems studied are drawn from a variety of classes, among them nonlinear systems, time-delayed and time-varying systems, multi-agent systems and complex networks.Readers are shown the latest techniques-recursive linear matrix inequalities, backward recursive difference equations, stochastic analysis and mapping methods. The unified framework for communication-protocol-based filtering and control for different networked systems established in the book will be of interest to academic researchers and practicing engineers working with communications and other signal-processing systems. Senior undergraduate and graduate students looking to increase their knowledge of current methods in control and signal processing of networked systems will also find this book valuable.

Explores the increasingly intimate relationship between China and wireless technology, taking the wave as a central concept In the twenty-first century city, wireless waves constitute an imperceptible, immersive, all-encompassing environment. Nowhere is this more so than in China, where a hyperdense network of mobile media has restructured daily life. Anna Greenspan re-imagines the relationship between China and wirelessness by synthesizing contemporary media theory with modern Chinese thought. It focuses specifically on the work of three critical figures: Tan Sitong 譚嗣同 (1865-1898), Xiong Shili 熊十力 (1885-1968) and Mou Zongsan 牟宗三 (1909-1995). Anna Greenspan is Assistant Professor of Global Contemporary Media at NYU Shanghai.

Dieses Lehrbuch ist eine einführende Darstellung der Übertragung digitaler Signale über gestörte Kanäle. Schwerpunkt ist die physikalisch-anschauliche und zugleich mathematisch-fundierte Erklärung der Übertragung im Basisband. Dazu werden notwendige Grundlagen der Signal- und Systemtheorie rekapituliert und funktionale Abhängigkeiten bei der Basisbandübertragung herausgearbeitet, um ein Verständnis der grundlegenden Probleme bei der Nachrichtenübertragung zu ermöglichen. Als wichtiger Übertragungskanal wird das Kupferkabel betrachtet und seine übertragungstechnischen Eigenschaften werden mit klassischen elektrotechnischen und systemtheoretischen Methoden beschrieben. Die zuvor beschriebenen Basisbandverfahren werden zur Übertragung über den linear verzerrenden Kanal eines Kupferkabels angewendet und Möglichkeiten der Filterung und Entzerrung erläutert. Dem einführenden Charakter des Lehrbuches entsprechend werden jeweils ausführliche Herleitungen angegeben sowie numerische Beispiele und eine Vielzahl von Abbildungen verwendet.

This book provides a comprehensive overview of the potential use cases and intelligent technologies, UAV layered architectures, research findings, experimental results, and standardization for intelligent UAV communications for public safety networks. This book will cover the conventional non-intelligent and intelligent solutions specifically targeting UAV communications for public safety networks. Moreover, reconfigurable intelligent surface (RIS) has recently attracted researchers and academician attention because its ability improves the propagation environment and enhances communication quality by intelligently reflecting the received signals. Leveraging intelligence into RIS-assisted UAV communications will meet the requirements of the intelligent, green, and sustainable 5G and beyond cellular networks, which makes it a potential candidate to overcome the inherent drawbacks of legacy wireless systems.The topics covered in this book will be of interest to both the professionals and students. 3D UAV placements schemes, trajectory design, interference management schemes, reinforcement learning solutions for more intelligent and trained solutions, joint UAV trajectory and RIS's passive beamforming design, and various other related topics of readers' interest are presented in detail.