Kommunikationsteknik / telekommunikation

Recent spectacular achievements in wireless, mobile, and sensor networks have dramatically changed our lives in many ways. However, the rapid evolution of wireless systems not only promises increased functionality, reliability, availability, and security, as well as putting a wide variety of new services at the users' disposal ? it also creates a number of design challenges that our research community is now facing. Scientists and engineers need to come up with, and promptly implement, novel wireless network architectures, while system operators and planners rethink their business models and attend to the growing expectations of their customer base. To provide a suitable forum for discussion between researchers, practitioners, and industry representatives interested in new developments in the respective research area, IFIP WG 6. 8 launched three separate series of conferences: MWCN (Mobile and Wireless Communications Networks), PWC (Personal Wireless Communications), and WSAN (Wireless Sensor and Actors Networks). In 2008, MWCN and PWC were merged into the IFIP Wireless and Mobile Networking Conference (WMNC 2008), held in Toulouse, France, from September 30 to October 2, 2008. MWNC 2008 and PWC 2008 topics were subsequently revised with a view to covering the whole spectrum of hot issues in wireless and mobile networking. As a result, IFIP WG 6. 8 decided to add WSAN as another WMNC track.

Stardust Monuments spotlights the enduring efforts to memorialize and canonize the history and meaning of Hollywood and American film culture. In this engaging analysis, Alison Trope explores the tensions between art and commerce as they intersect in a range of nonprofit and for-profit institutions and products. An insightful tour of Hollywood's past, present, and future, Stardust Monuments examines the establishment of film libraries and museums beginning in the mid 1930s, the many failed attempts to open a Hollywood museum ranging from the 1960s to today, and the more successful recent corporate efforts to use Hollywood's past in theme restaurants and parks, classic movie channels, and DVD boxed sets.This fascinating narrative details the ongoing struggle to champion and codify Hollywood's legacy, a struggle engaged in by Hollywood stars and corporate executives, as well as memorabilia collectors and users of IMDb.

Access to Mobile Services focuses on methods for accessing broadcast based M-services from multiple wireless channels. This book presents a novel infrastructure that provides a multi-channel broadcast framework for mobile users to effectively discover and access composite M-services. Multi-channel algorithms are proposed for efficiently accessing composite services.Access to Mobile Services provides an in-depth survey of wireless data access and motivates the need to treat mobile services differently. A wireless adaptation of Service Oriented Architecture (SOA) is also covered.Designed for researchers and practitioners who work in the general area of mobile services, this book is also suitable for advanced-level students in computer science.Forewords by:   Michael P. Papazoglou, Tilburg University, The NetherlandsFabio Casati, University of Trento, Italy 

not a coincidence, but is the result of a carefully planned time of landing (sun elevation) and lander orientation (sun azimuth). * The picture was started 25 seconds after touchdown and took 15 seconds to acquire. The alternating bright and dark vertical striations at the left side of the image and the fine particles deposited on the footpad at the right side were caused by a turbulent cloud of dust raised by the lander's retrorockets. t *F. O. Huck and S. D. Wall, "e;Image quality prediction: An aid to the Viking Lander imaging investigation on Mars. "e; Appl. Opt. 15, 1748-1766 (1976). tT. A. Mutch, A. B. Binder, F. O. Huck, E. C. Levinthal, S. Liebes, Jr. , E. C. Morris, W. R. Patterson, J. B. Pollack, C. Sagan and G. R. Taylor, "e;The Surface of Mars: The view from the Viking 1 Lander. "e; Science 193, 791-801 (1976). VISUAL COMMUNICATION An Information Theory Approach Chapter 1 Introduction 1. 1 OBJECTIVE l The fundamental problem of communication, as Shannon stated it, is that of reproducing at one point either exactly or approximately a message selected at another point. In the classical model of communication (Fig. 1. 1), the infor- mation source selects a desired message from a set of possible messages which the transmitter changes into the signal that is actually sent over the commu- nication channel to the receiver. The receiver changes this signal back into a message, and hands this message to the destination.

A comprehensive study of silicon-based distributed architectures in wideband circuits are presented in this book. Novel circuit architectures for ultra-wideband (UWB) wireless technologies are described. The book begins with an introduction of several transceiver architectures for UWB. The discussion then focuses on RF front-end of the UWB radio. Therefore, the book will be of interest to RF circuit designers and students.

This book is an evolution from my book A First Course in Information Theory published in 2002 when network coding was still at its infancy. The last few years have witnessed the rapid development of network coding into a research ?eld of its own in information science. With its root in infor- tion theory, network coding has not only brought about a paradigm shift in network communications at large, but also had signi?cant in?uence on such speci?c research ?elds as coding theory, networking, switching, wireless c- munications,distributeddatastorage,cryptography,andoptimizationtheory. While new applications of network coding keep emerging, the fundamental - sults that lay the foundation of the subject are more or less mature. One of the main goals of this book therefore is to present these results in a unifying and coherent manner. While the previous book focused only on information theory for discrete random variables, the current book contains two new chapters on information theory for continuous random variables, namely the chapter on di?erential entropy and the chapter on continuous-valued channels. With these topics included, the book becomes more comprehensive and is more suitable to be used as a textbook for a course in an electrical engineering department.

"e;Design of high voltage xDSL line drivers in standard CMOS"e; fits in the quest for highly efficient fully integrated xDSL modems for central office applications. The book focusses on the line driver, the most demanding building block of the xDSL modem for lowering power. To reduce the cost, the cheapest technology is selected: standard CMOS, without any extra process options to increase the nominal supply voltage. The emphasis lies on the analysis, design and implementation of high voltage highly efficient line drivers in mainstream CMOS."e;Design of high voltage xDSL line drivers in standard CMOS"e; covers the total design flow of monolithic CMOS high voltage circuits. The book is essential reading for analog design engineers and researchers in the field and is also suitable as a text book for an advanced course on the subject.

There is a need to be aware of the challenges awaiting us in next generation (NextGen) networks in order to take the proper steps to either minimize or eliminate issues as they present themselves. Incorporating artificial intelligence in NextGen networks for privacy and security policies will serve this purpose. It is essential to stay current with these emerging technologies and applications in order to maintain safe and secure communications in the future. Challenges and Risks Involved in Deploying 6G and NextGen Networks explores strategies for the design and deployment of more secured and user-centered NextGen networks through artificial intelligence to enrich user experience. It further investigates the political, social, and geographical challenges involved in realizing these 6G networks and explores ways to improve the security of future potential applications as well as protect user data from illegal access. Covering topics such as deep learning algorithms, aerial network communication, and edge computing, this major reference work is an indispensable resource for regulatory and policy groups, associations and technology groups, government and international bodies, technology executives and technical institutions, management consulting and advisory firms, communication engineers, network engineers, students and educators of higher education, researchers, and academicians.

This book covers the theory, modelling, design and implementations of Terahertz Dielectric Resonator Antenna technologies at microwave, terahertz or optical frequencies for future applications in wireless high-speed communication, wireless personal communication and sensor networks. Case studies with prototype models are included.

This volume provides a consolidated reference for the applications of frequency selective surfaces (FSS) technology in different sectors such as wireless communications, smart buildings, microwave and medical industries. It covers all aspects of metamaterial FSS technology starting from theoretical simulation, fabrication and measurement all the way to actual hardware implementation. Also included are in-depth discussions on the design methodologies of metamaterial FSS structures and their practical implementation in devices and components. It will be of interest to researchers and engineers working on developing metamaterial-FSS technology.

By providing students with essential information regarding broadcast performance, On Air: Effective Announcing helps them develop the skills required to enter the field of professional announcing. The text also helps students understand how the study of broadcast performance fits within the larger framework of communication studies. The book begins with an overview of the professional practice of announcing and an exploration of essential principles of ef

This book provides an up-to-date account of the status of research and implementation of automotive radars. The book covers fundamental, novel and essential technologies, such as MIMO, waveform design, and interference mitigation. The book includes chapters on exterior and interior uses of radar technology.

Principles of Modern Radar: Basic Principles is a comprehensive text for courses in radar systems and technology, a professional training textbook for formal in-house courses and for new hires; a reference for ongoing study following a radar short course and a self-study and professional reference book.

This monograph covers the topic of Wireless for Machine Learning (ML). Although the general intersection of ML and wireless communications is currently a prolific field of research that has already generated multiple publications, there is little review work on Wireless for ML. As data generation increasingly takes place on devices without a wired connection, ML related traffic will be ubiquitous in wireless networks. Research has shown that traditional wireless protocols are highly inefficient or unsustainable to support ML, which creates the need for new wireless communication methods. This monograph gives an exhaustive review of the state-of-the-art wireless methods that are specifically designed to support ML services over distributed datasets. Currently, there are two clear themes within the literature, analog over-the-air computation and digital radio resource management optimized for ML. A comprehensive introduction to these methods is presented, reviews are made of the most important works, open problems are highlighted and application scenarios are discussed.

Studienarbeit aus dem Jahr 2017 im Fachbereich Informatik - IT-Security, Note: 2,7, FOM Hochschule für Oekonomie & Management gemeinnützige GmbH, Berlin früher Fachhochschule, Sprache: Deutsch, Abstract: IT-Sicherheitsthemen gewinnen immer mehr an Bedeutung weltweit, da sowohl Kosten von IT Attacken als auch der Imageverlust enorm hoch sind. Die damit ver-bundenen Kosten steigen von Jahr zu Jahr. Die Studie "2015 Cost of Cyber Crime Study: Germany fand heraus, dass die Durchschnittskosten (der Schaden der durch den Angriff verursacht wurde) pro Angriff in Deutsch von 6,1 Millionen Euro im Jahr 2014 auf 6,6 Millionen im Jahr 2015 gestiegen sind. Deutschland ist dabei auf Platz 2 hinter den USA, wo der Durchschnittswert doppelt so hoch ist. Dabei sind Unternehmen aus allen Branchen und aller Größen betroffen. Die Kosten pro Mitarbeiter sind dabei bei kleinen Unternehmen sieben Mal so hoch wie bei großen Unter-nehmen (1.886,00 Euro im Vergleich zu 258,00 Euro). Die Fälle bei den Unternehmen einen großen Schaden erleiden, weil Mitarbeiter unwissentlich Daten oder Informationen an Betrüger herausgeben, bzw. Handlungen vornehmen, um die sie von Betrügern gebeten wurden, häufen sich. Erst im August 2016 wurde der Automobilzulieferer Leoni AG mit Sitz in Nürnberg Opfer eines sog. "Fake President" Angriffes. Dabei wurde Mitarbeitern von Fremden vorgetäuscht über "besondere Befugnisse" zu verfügen, sodass 40 Millionen Euro auf ausländische Konten transferiert wurden.Es existieren zahlreiche weitere Beispiele für solche Angriffe aus der Praxis. Eine von Bitkom im Dezember 2015 durchgeführte Umfrage, bei der 504 Unternehmen in Deutschland gefragt wurden, von welchen Handlungen das Unternehmen in den letzten 2 Jahren betroffen war, zeigt, dass 17 % Social Engineering Attacken zum Opfer wurden . Das alles lässt auf die Aktualität des Themas schließen. Da jeder Angriff für das Unternehmen mit sehr hohen Kosten verbunden ist, ist es wichtig sich mit dieser Thematik auseinander zu setzen.

The ABC was established in 1932, following in the footsteps of the BBC. In its early years it was a shining example of a revered public broadcaster.The key to its early success was having two strong minded, long serving General Managers who ensured that the place was well run, with everyone knowing their place.But as the years went by senior management progressively outsourced responsibility to producers and celebrity presenters and the organisation lost its way, so that now it is little more than a mouthpiece for "progressive" outpourings.It still remains an important national institution, especially in regional Australia, but its political obsessions, catering almost exclusively for inner suburban elites, render it in dire need of reform.As Alston argues, the fundamental problem is that the ABC is a protected entity, with a guaranteed income in excess of a billion dollars, while commercial media outlets struggle to stay alive.With no competitors it doesn't have to earn a living and has no incentive to perform or innovate, let alone live within its means. Instead of catering for its audience it prefers to lecture to them.Effectively accountable to no one, it feels free to ignore its charter obligations, or the interests of its audience, ignoring valid criticism or contemptuously dismissing it.Despite being founded in the depths of the Depression it has long since lost interest in the joys and struggles of the middle class.Instead of relating to basic issues such as jobs, families and incomes it prefers to pander to the elite, inner urban instincts of people like themselves.Alston concludes with a practical reform agenda for adoption by government, but no doubt it will be strenuously contested by the organisation.Richard Alston AO has been a barrister, a senior Cabinet Minister, Australian High Commissioner to the United Kingdom and Federal President of the Liberal Party. He is currently a businessman and company director.