Here, for the first time, is a complete guide to all the wonderful transistor radios produced by the Zenith Radio Corporation during the "Magic Years," when transistor radio design was constantly being improved. This comprehensive book includes a complete listing of all transistor radio models created by Zenith from 1955 through 1965. Outstanding color photos from original Zenith sales sheets as well as information on each model are presented in a year by year order of production. Never before published photographs, documents, and original drawings from the Zenith archives, as well as a large collection of original Zenith advertising, fill the pages. A large, full-color photo section with price guide rounds out the book and will help readers easily identify each Zenith transistor radio from those "Magic Years."

Community radio is an established and key site for negotiations of social and political issues for marginalised communities. Given its inherently local nature (both geographically and ideologically), community radio is perfectly placed as a site for articulating community concerns. At the same time, given this local quality, the diverse ways in which stations-and broadcasters-negotiate their community concerns vary substantially from city to city and region to region across Canada and the US. The Cultural Work of Community Radio investigates the multiple modes of community and broadcasting practice at selected community stations, explores how these draw from and reflect ongoing concerns of their host city or region, and examines how on the ground practice maps on to overarching broadcast policy directives and guidelines. Focusing on community production practices with reference to policy frameworks around community representation, this book examines and compares differences in community radio production practices in Miami, Montreal, New Orleans, Toronto and tribal lands in Arizona.

The explosive demand for mobile communications is driving the development of wireless technology at an unprecedented pace. Unfortunately, this exceptional growth is also giving rise to a myriad of security issues at all levels-from subscriber to network operator to service provider. Providing technicians and designers with a critical and comprehensive resource, Security of Mobile Communications brings together the policies, practices, and guidelines needed to identify and address the security issues related to today's wireless sensor networks, satellite services, mobile e-services, and inter-system roaming and interconnecting systems. It details the major mobile standards for securing mobile communications and examines the architectures able to provide data confidentiality, authentication, integrity, and privacy in various wireless environments. This book will serve as an invaluable resource for those looking to identify and ameliorate security issues. Professor Noureddine Boudriga, an internationally recognized authority, goes beyond analysis, standards, and guidelines to define the roles and responsibilities that network operators, service providers, and even customers need to fulfill to assure our mobile communications are as secure as they are prolific.

The papers published in this volume were presented at the Second International Conference on Ultra-WidebandiShort-Pulse (UWB/SP) Electromagnetics, ApriIS-7, 1994. To place this second international conference in proper perspective with respect to the first conference held during October 8-10, 1992, at Polytechnic University, some background information is necessary. As we had hoped, the first conference struck a responsive cord, both in timeliness and relevance, among the electromagnetic community 1. Participants at the first conference already inquired whether and when a follow-up meeting was under consideration. The first concrete proposal in this direction was made a few months after the first conference by Prof. A. Terzuoli of the Air Force Institute of Technology (AFIT), Dayton, Ohio, who has been a strong advocate of time-domain methods and technologies. He initially proposed a follow-up time-domain workshop under AFIT auspices. Realizing that interest in this subject is lodged also at other Air Force installations, we suggested to enlarge the scope, and received in this endeavor the support of Dr. A. Nachman of AFOSR (Air Force Office of Scientific Research), Bolling Air Force Base, Washington, D.C.

"Digital Audio Broadcasting" revised with the latest standards and updates of all new developments

The new digital broadcast system family is very different from existing conventional broadcast systems. It is standardised in a large number of documents (from ITU-R, ISO/IEC, ETSI, EBU, and others) which are often difficult to read. This book offers a comprehensive and fully updated overview of Digital Audio Broadcasting (DAB, DAB+) and Digital Multimedia Broadcasting (DMB), and related services and applications. Furthermore, the authors continue to build upon the topics of the previous editions, including audio coding, data services, receiver techniques, frequencies, and many others. There are several new sections in the book, which would be otherwise difficult to locate from various sources.

"Key Features: "The contents have been significantly updated from the second edition, including up-to-date coverage of the latest standardsContains a new chapter on Digital Multimedia Broadcasting"Must-have" handbook for engineers, developers and other professionals in the field

This book will be of interest to planning and system engineers, developers for professional and domestic equipment manufacturers, service providers, postgraduate students and lecturers in communications technology. Broadcasting engineers in related fields will also find this book insightful.

Covering the tabletop battery radios built by Zenith, the Chicago-based manufacturer, each radio is described in detail. Included are comprehensive functional descriptions on each set's operation, which uses color-coded diagrams to aid in describing the circuits. Over 400 color photos and over 200 diagrams illustrate the thorough text. Each radio section includes a Quick Reference Guide. Previously unpublished information related to these radios is included for the first time. The restoration section covers the reproduction of vital replacement parts (pointers, pulleys, etc.) that typically need replacing, the repair of other parts (variable capacitor, transformers, etc.), appropriate modifications (battery adapter, etc.), and testing in order to get that early radio working. The techniques presented can be applied to the restoration of any 1920s radio. Also included are instructions on reproducing any battery ( A, B, or C ) in radios built in the 1920s. This is an indispensable reference guide to early Zenith radios."

This book focuses on the issue of optimizing radio resource allocation (RRA) and user admission control (AC) for multiple multicasting sessions on a single high altitude platform (HAP) with multiple antennas on-board. HAPs are quasi-stationary aerial platforms that carry a wireless communications payload to provide wireless communications and broadband services. They are meant to be located in the stratosphere layer of the atmosphere at altitudes in the range 17-22 km and have the ability to fly on demand to temporarily or permanently serve regions with unavailable telecommunications infrastructure. An important requirement that the book focusses on is the development of an efficient and effective method for resource allocation and user admissions for HAPs, especially when it comes to multicasting. Power, frequency, space (antennas selection) and time (scheduling) are the resources considered in the problem over an orthogonal frequency division multiple access (OFDMA) HAP system. Due to the strong dependence of the total number of users that could join different multicast groups, on the possible ways we may allocate resources to these groups, it is of significant importance to consider a joint user to session assignments and RRA across the groups. From the service provider's point of view, it would be in its best interest to be able to admit as many higher priority users as possible, while satisfying their quality of service requirements. High priority users could be users subscribed in and paying higher for a service plan that gives them preference of admittance to receive more multicast transmissions, compared to those paying for a lower service plan. Also, the user who tries to join multiple multicast groups (i.e. receive more than one multicast transmission), would have preferences for which one he would favor to receive if resources are not enough to satisfy the QoS requirements. Technical topics discussed in the book include: - Overview on High Altitude Platforms, their different types and the recent works in this area - Radio Resource Allocation and User Admission Control in HAPs - Multicasting in a Single HAP System: System Model and Mathematical Formulation - Optimization schemes that are designed to enhance the performance of a branch and bound technique by taking into account special mathematical structure in the problem formulation

While there are numerous books describing modern wireless communication systems that contain overviews of radio propagation and radio channel modelling, there are none that contain detailed information on the design, implementation and calibration of radio channel measurement equipment, the planning of experiments and the in depth analysis of measured data.

The book would begin with an explanation of the fundamentals of radio wave propagation and progress through a series of topics, including the measurement of radio channel characteristics, radio channel sounders, measurement strategies, data analysis techniques and radio channel modelling. Application of results for the prediction of achievable digital link performance would be discussed with examples pertinent to single carrier, multi-carrier and spread spectrum radio links. This work would address specifics of communications in various different frequency bands for both long range and short range fixed and mobile radio links.

Radio Monitoring: Problems, Methods, and Equipment offers a unified approach to fundamental aspects of Automated Radio Monitoring (ARM). The authors discuss the development, modeling, design, and manufacture of ARM systems. Data from established and recent research are presented and recommendations are made on methods and approaches for solving common problems in ARM. The authors also provide classification and detailed descriptions of modern high-efficient hardware-software ARM equipment, including the equipment for detection, radio direction-finding, parameters measurement and their analysis, and the identification and localization of the electromagnetic field sources. Examples of ARM equipment structure, applications, and software are provided to manage a variety of complicated interference environment in the industrial centers, inside of the buildings, and in the open terrain. This book provides a reference for professionals and researchers interested in deploying ARM technology as a tool for solving problems from radio frequency spectrum usage control.

This reference offers practical explanations of the full range of radio frequency integrated circuits (RFICs). It focuses mainly on bipolar technology to demonstrate circuits, but CMOS is included as well. By emphasizing working designs, it seeks to transport the reader into the authors' own RFIC lab so that you can understand the function of each design detailed in the text. Among the RFIC designs examined are RF integrated LC-based filters, VCO automatic amplitude control loops, and fully-integrated transformer-based circuits, as well as image reject mixers and power amplifiers. If you are new to RFIC design, you should find the introduction to basic theory of interest so that you can quickly come up to speed on how RFICs perform and work together in a communications device. An examination of RFIC technology guides you in knowing when RFICs are the right choice for designing a communications device. This resource features over 400 equations and 500 illustrations that support key topics.

Are you an engineer or a researcher developing RFID systems? Are you a manager considering deploying RFID-based applications? If so, this book is for you. Covering modern RFID systems, the challenges to RFID implementation are addressed using specific industrial research examples and common integration issues. The primary focus is on answering questions surrounding building scalable global Internet-based RFID networks. Key topics include RFID data management, RFID data processing and integration, Real-Time Locating Systems (RTLS) and sensors. The book considers the challenges of and solutions to building and exploiting global networks to guarantee one of the most important business drivers for modern RFID technology: traceability. The authors have drawn together RFID applications from the retail supply chain, asset and product lifecycle management, anti-counterfeiting and cold chain management to explore how global traceability networks can be created using RFID and sensor technologies. They present insights from world's leading research laboratories.

The considerable growth of RFID is currently accompanied by the development of numerous identification technologies that complement those already available while seeking to answer new problems. Chipless RFID is one example. The goal is to both significantly reduce the price of the tag and increase the amount of information it contains, in order to compete with the barcode while retaining the benefits of a flexible reading approach based on radio communication. To solve the problem of the number of bits, this book describes the possibility of coding the information at the level of the overall shape of the RCS of the tag, which would facilitate reaching very large quantities. The design of the tags then returns to the resolution of the inverse problem of the electromagnetic signature. The proposed design methodology regularizes the problem by decomposing the signature on a basis of elementary patterns whose signature is chosen in advance.

Wireless Communication Technologies: New Multimedia Systems is based on a selection of the best papers presented at the recent International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC '99). All of the papers have been extended into full chapters, critiqued, and edited into a unified and structured book.Contributions to this volume are by the leading specialist from their respective fields. The topics represent the newest ideas and research involving wireless multimedia systems and wireless technologies. Part I focuses on key developments and technologies and includes coverage of wireless channel modeling, space-time coding, coding for wireless networks, OFDM, software radio, and spatial and temporal communication theory. Chapters in Part II address many of the new wireless systems currently being standardized; such as, intelligent transport systems, wireless internet, digital TV broadcasting, and IMT-2000. Insights into many of the hot and rapidly developing research topics, such as bluetooth, Mobile IP, GPRS, and others, are discussed. Each chapter includes basic concepts and technical trends in addition to providing extensive technical coverage.Researchers and engineers of wireless communication systems will benefit from insights and results reported in Wireless Communication Technologies: New Multimedia Systems. This work may also be suitable for graduate level courses on Wireless Communication Systems, Cellular Communication Systems, and Mobile Communications.

Recently, there has been interest by regulators, the public and the manufacturers of wireless devices in the issues relating to the safety of radio frequency (RF) energy. These issues require an understanding of the scientific underpinnings of both physics of RF energy and cellular biology. This book is designed to provide precisely such cross-functional expertise. The editors of this book intend to provide a reliable source for a sound scientific understanding of the issues and to stimulate future scientific advances in this area. Therefore, the audience for this book includes such diverse groups as scientists, governmental policy-makers and regulatory bodies, representatives of industry and the public at large.

This landmark monograph presents the most recent mathematical developments in the analysis of ionospheric distortions of SAR images and offers innovative new strategies for their mitigation. As a prerequisite to addressing these topics, the book also discusses the radar ambiguity theory as it applies to synthetic aperture imaging and the propagation of radio waves through the ionospheric plasma, including the anisotropic and turbulent cases. In addition, it covers a host of related subjects, such as the mathematical modeling of extended radar targets (as opposed to point-wise targets) and the scattering of radio waves off those targets, as well as the theoretical analysis of the start-stop approximation, which is used routinely in SAR signal processing but often without proper justification. The mathematics in this volume is clean and rigorous - no assumptions are hidden or ambiguously stated. The resulting work is truly interdisciplinary, providing both a comprehensive and thorough exposition of the field, as well as an accurate account of a range of relevant physical processes and phenomena. The book is intended for applied mathematicians interested in the area of radar imaging or, more generally, remote sensing, as well as physicists and electrical/electronic engineers who develop/operate spaceborne SAR sensors and perform the data processing. The methods in the book are also useful for researchers and practitioners working on other types of imaging. Moreover, the book is accessible to graduate students in applied mathematics, physics, engineering, and related disciplines. Praise for Transionospheric Synthetic Aperture Imaging: "I perceive that this text will mark a turning point in the field of synthetic aperture radar research and practice. I believe this text will instigate a new era of more rigorous image formation relieving the research, development and practitioner communities of inconsistent physical assumptions and numerical approaches." - Richard Albanese, Senior Scientist, Albanese Defense and Energy Development LLC

A cognitive network makes use of the information gathered from the network in order to sense the environment, plan actions according to the input, and make appropriate decisions using a reasoning engine. The ability of cognitive networks to learn from the past and use that knowledge to improve future decisions makes them a key area of interest for anyone whose work involves wireless networks and communications. Cognitive Networks: Applications and Deployments examines recent developments in cognitive networks from the perspective of cutting-edge applications and deployments. Presenting the contributions of internationally renowned experts, it supplies complete and balanced treatment of the fundamentals of both cognitive radio communications and cognitive networks-together with implementation details. The book includes case studies and detailed descriptions of cognitive radio platforms and testbeds that demonstrate how to build real-world cognitive radio systems and network architectures. It begins with an introduction to efficient spectrum management and presents a survey on joint routing and dynamic spectrum access in cognitive radio networks. Next, it examines radio spectrum sensing and network coding and design. It explores intelligent routing in graded cognitive networks and presents an energy-efficient routing protocol for cognitive radio ad hoc networks. The book concludes by considering dynamic radio spectrum access and examining vehicular cognitive networks and applications. Presenting the latest standards and spectrum policy developments, the book's strong practical orientation provides you with the understanding you will need to participate in the development of compliant cognitive systems.

With nearly 7 billion mobile phone subscriptions worldwide, mobility and computing have become pervasive in our society and business. Moreover, new mobile multimedia communication services are challenging telecommunication operators. To support the significant increase in multimedia traffic-especially video-over wireless networks, new technological infrastructure must be created. Cognitive Radio Networks (CRNs) are widely regarded as one of the most promising technologies for future wireless communications. This book explains how to efficiently deliver video, audio, and other data over CRNs. Covering advanced algorithms, protocols, and hardware-/software-based experiments, this book describes how to encode video in a prioritized way to send to dynamic radio links. It discusses different FEC codes for video reliability and explains how different machine learning algorithms can be used for video quality control. It also explains how to use readily available software tools to build a CRN simulation model. This book explains both theoretical and experimental designs. It describes how universal software radio peripheral (USRP) boards can be used for real-time, high-resolution video transmission. It also discusses how a USRP board can sense the spectrum dynamics and how it can be controlled by GNU Radio software. A separate chapter discusses how the network simulator ns-2 can be used to build a simulated CRN platform.

The demand for mobile connectivity is continuously increasing, and by 2020 Mobile and Wireless Communications will serve not only very dense populations of mobile phones and nomadic computers, but also the expected multiplicity of devices and sensors located in machines, vehicles, health systems and city infrastructures. Future Mobile Networks are then faced with many new scenarios and use cases, which will load the networks with different data traffic patterns, in new or shared spectrum bands, creating new specific requirements. This book addresses both the techniques to model, analyse and optimise the radio links and transmission systems in such scenarios, together with the most advanced radio access, resource management and mobile networking technologies. This text summarises the work performed by more than 500 researchers from more than 120 institutions in Europe, America and Asia, from both academia and industries, within the framework of the COST IC1004 Action on "Cooperative Radio Communications for Green and Smart Environments". The book will have appeal to graduates and researchers in the Radio Communications area, and also to engineers working in the Wireless industry. Topics discussed in this book include: * Radio waves propagation phenomena in diverse urban, indoor, vehicular and body environments* Measurements, characterization, and modelling of radio channels beyond 4G networks* Key issues in Vehicle (V2X) communication* Wireless Body Area Networks, including specific Radio Channel Models for WBANs* Energy efficiency and resource management enhancements in Radio Access Networks* Definitions and models for the virtualised and cloud RAN architectures* Advances on feasible indoor localization and tracking techniques* Recent findings and innovations in antenna systems for communications* Physical Layer Network Coding for next generation wireless systems* Methods and techniques for MIMO Over the Air (OTA) testing

Obtain a more accurate analysis of radio propagation in cellular networks using the proven techniques described in this book. "Cell Planning for Wireless Communications" surveys the principle tools used in the planning of micro/pico cellular systems for personal communication networks. Engineers, researchers, consultants, and mobile communication graduate students learn how to use specific computer codes to perform a reliable analysis of the major aspects of micro/pico cellular design including propagation, fading estimation, mutual interference, cell geometry, teletraffic, and channel allocation.

The book shows you how to improve the design of microcellular network systems by combining propagation models with topographical/morphological databases and ray-tracing acceleration techniques. The authors explain Physical Optic (PO), Geometrical Optic (GO), and the Uniform Theory of Diffraction (UTD) for the analysis of propagation in complex urban or indoor scenarios. The book also survey select empirical propagation models.

With over 100 illustrations, 300 equations, computer models and applications to PCS planning, a tutorial presentation of the application of UTD to wireless problems, and new ray tracing algorithms, you get all the information you need to compute propagation in micro/pico cells in one reference. Furthermore, the approaches presented may also be applied to macrocellular systems.

The revolution of wireless communications has only just begun to transform the telecommunications industry worldwide. This book offers insight into the possible options for corporate strategists and government policymakers as they look to harness the expansion of wireless communications to meet the goals of sustainable telecommunications development. Using a multidisciplinary approach which combines policy research, legal analysis, business economics, and models of sustainability from the environmental sciences, the book compares the development of wireless communications in four countries: the United States, the United Kingdom, Russia, and Brazil.
The comparative analysis points to common themes and opportunities, including:
* breaking down the barriers between wireless and wireline access by changing the regulatory design which constrains service providers;
* targeting the development potential of wireless access through the utilization of new technologies and service models; and
* using wireless access as the basis for full facilities-based competition in both developing and developed world markets.
No other book today offers this broad a context for a discussion of wireless communications and its potential impact on the evolution of the telecommunications industry.

Until the 1990s, almost all spectrum licenses were given away practically for free-even the first mobile licenses which laid the foundation for multi-billion dollar companies that dominate stock markets around the world. In the past fifteen years, there has been a concerted attempt to liberalise the sector and make it more open to market forces. This book examines this attempt. Exploring the new frontier for spectrum policy, Understanding Spectrum Liberalisation identifies the successes and failures of the main policy initiatives of the past decade. It explains, in layman's terms, the technical and policy background needed to understand these debates. For those already working in the field, the book provides a lively analysis of recent policy initiatives along with an authoritative interpretation of the latest developments in spectrum policy. It examines individual liberalisation initiatives in detail and explains the logic behind moves towards spectrum sharing, which is seen as the next policy phase. This book will help non-specialists climb the formidable learning curve quickly. It is ideal for those who have just become involved in the spectrum field, whether in industry, government, or as a regulator, as well as those with expertise in one area of spectrum management who want to learn more about the other areas. History is about the concerns of the present, so the saying goes, and the authors hope that their interpretation of the very recent past will stimulate debate about future policy and help you make substantive contributions to ongoing policy debates.

This book is aimed to discuss the cognitive radio, software defined radio (SDR), and adaptive radio concepts from several aspects. Cognitive radio and cognitive networks will be investigated from a broad aspect of wireless communication system enhancement while giving special emphasis on better spectrum utilization. Applications of cognitive radio, SDR and cognitive radio architectures, spectrum efficiency and soft spectrum usage, adaptive wireless system design, measurements and awareness of various parameters including interference temperature and geo-location information are some of the important topics that will be covered in this book.

"Where this book is exceptional is that the reader will not just learn how LTE works but why it works"
Adrian Scrase, ETSI Vice-President, International Partnership Projects

Following on the success of the first edition, this book is fully updated, covering the latest additions to LTE and the key features of LTE-Advanced.

This book builds on the success of its predecessor, offering the same comprehensive system-level understanding built on explanations of the underlying theory, now expanded to include complete coverage of Release 9 and the developing specifications for LTE-Advanced. The book is a collaborative effort of more than 40 key experts representing over 20 companies actively participating in the development of LTE, as well as academia. The book highlights practical implications, illustrates the expected performance, and draws comparisons with the well-known WCDMA/HSPA standards. The authors not only pay special attention to the physical layer, giving an insight into the fundamental concepts of OFDMA-FDMA and MIMO, but also cover the higher protocol layers and system architecture to enable the reader to gain an overall understanding of the system.

Key New Features: Comprehensively updated with the latest changes of the LTE Release 8 specifications, including improved coverage of Radio Resource Management RF aspects and performance requirementsProvides detailed coverage of the new LTE Release 9 features, including: eMBMS, dual-layer beamforming, user equipment positioning, home eNodeBs / femtocells and pico cells and self-optimizing networksEvaluates the LTE system performanceIntroduces LTE-Advanced, explaining its context and motivation, as well as the key new features including: carrier aggregation, relaying, high-order MIMO, and Cooperative Multi-Point transmission (CoMP).Includes an accompanying website containing a complete list of acronyms related to LTE and LTE-Advanced, with a brief description of each (http: //www.wiley.com/go/sesia_theumts)

This book is an invaluable reference for all research and development engineers involved in implementation of LTE or LTE-Advanced, as well as graduate and PhD students in wireless communications. Network operators, service providers and R&D managers will also find this book insightful.

Learn all you need to know about wireless sensor networks

"Protocols and Architectures for Wireless Sensor Networks" provides a thorough description of the nuts and bolts of wireless sensor networks.

The authors give an overview of the state-of-the-art, putting all the individual solutions into perspective with one and other. Numerous practical examples, case studies and illustrations demonstrate the theory, techniques and results presented. The clear chapter structure, listing learning objectives, outline and summarizing key points, help guide the reader expertly through the material.

"Protocols and Architectures for Wireless Sensor Networks" Covers architecture and communications protocols in detail with practical implementation examples and case studies.Provides an understanding of mutual relationships and dependencies between different protocols and architectural decisions.Offers an in-depth investigation of relevant protocol mechanisms. Shows which protocols are suitable for which tasks within a wireless sensor network and in which circumstances they perform efficiently. Features an extensive website with the bibliography, PowerPoint slides, additional exercises and worked solutions.

This text provides academic researchers, graduate students in computer science, computer engineering, and electrical engineering, as well as practitioners in industry and research engineers with an understanding of the specific design challenges and solutions for wireless sensor networks.

Check out www.wiley.com/go/wsn for accompanying course material

"I am deeply impressed by the book of Karl & Willig. It is by far the most complete source for wireless sensor networks...The book covers almost all topics related to sensor networks, gives an amazing number of references, and, thus, is the perfect source for students, teachers, and researchers. Throughout the book the reader will find high quality text, figures, formulas, comparisons etc. - all you need for a sound basis to start sensor network research."

"Prof. Jochen Schiller, Institute of Computer Science, Freie Universitat Berlin"