Описание: Based on industrial short courses, this book comprehensively covers TETRA and related subject areas. The majority of the book is devoted to the operation, characteristics and design choices associated with the TETRA standard. Analysis is also provided on both the public and private mobile communications scene.
Описание: This volume presents the logical arithmetical or computational procedures within communications systems that will ensure the solution to various problems. The authors comprehensively introduce the theoretical elements that are at the basis of the field of algorithms for communications systems. Various applications of these algorithms are then illustrated with particular attention to wired and wireless network access technologie * Provides a complete treatment of algorithms for communications systems, rarely presented together * Introduces the theoretical background to digital communications and signal processing * Features numerous applications including advanced wireless modems and echo cancellation techniques * Includes useful reference lists at the end of each chapter Graduate students in the fields of Telecommunications and Electrical Engineering Researchers and Professionals in the area of Digital Communications, Signal Processing and Computer Engineering will find this book invaluable.
Описание: This user-friendly and highly readable book presents the basic and intermediate level treatment of modern digital and analog communication systems. The basics of communication systems without using probabilistic concepts are introduced first. With this solid base, the students are ready to master the probabilistic concepts introduced in later chapters. The great strength of the book is in its superb pedagogical style. The book consistently does an excellent job of explaining difficult concepts clearly, using prose as well as mathematics. Every effort is made to give an intuitive insight-rather than just proofs- as well as heuristic explanations of theoretical results, wherever possible. The clear explanations, the well-chosen examples to clarify the abstract mathematical results, and excellent illustrations make this text highly informative and easily accessible to an average student. One of the aims in writing this text has been to make learning a pleasant or at least a less intimidating experience for the student by presenting the subject in a clear, understandable, and logically organized manner.
Автор: George V. Tsoulos Название: Adaptive Antennas for Wireless Communications ISBN: 0780360168 ISBN-13(EAN): 9780780360167 Издательство: Wiley Рейтинг: Цена: 19751 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: "In the past decade, the wireless communications community recognized adaptive antennas as a core technology that would help existing systems overcome problems related to spectrum efficiency and provide a vehicle to achieve the ambitious requirements of next-generation networks. The communications industry has already begun to develop adaptive antenna systems for commercial use and at the same time is working with standardization institutes around the world to produce adaptive antenna-friendly standards. Adaptive Antennas for Wireless Communications is a concise, detailed resource of information for all critical issues related to this technology and is compiled from the original published work of experts in the field. The extensive literature covers: * Historical and background aspects* Radio channel simulation techniques and characteristics* Adaptive algorithm performance under a variety of conditions* Adaptive antenna performance in different operational environments* Design and implementation issues* Experimental results* Other issues such as network planning and recent novel techniques Adaptive Antennas for Wireless Communications is a valuable reference for helping consultants, researchers, communications professionals, academics, and students gain an in-depth understanding of adaptive antenna technology. ABOUT THE EDITOR George V. Tsoulos has been active in many pioneering research projects on adaptive antennas in the past decade, among which are three European collaborative projects in this area (TSUNAMI I and II and SUNBEAM). Dr. Tsoulos is a member of the organizing committee of the European action COST 260 (European Cooperation in the field of Scientific and Technical research) on smart antennas and has written and consulted extensively on the topic. His interests include radio propagation and network planning for advanced wideband/broadband wireless communications and design, implementation, and performance issues for modern adaptive antenna systems. Currently, Dr. Tsoulos is with the PA Consulting Group, Cambridge Technology Centre, in Cambridge, U.K." Sponsored by: IEEE Antennas and Propagation Society
Описание: Mobile communications bring profound changes to our everyday lives. The launch of 3rd generation mobile systems in 2001 in Japan and from 2002 throughout the rest of the world, will enable us to communicate at anytime and anywhere, by using a variety of services which have up to now only been available to fixed network users. By the end of 2003, there are expected to be over one billion mobile telephones in use around the world, which surpasses the number of fixed telephone lines projected for that date. 7Illustrates the current situation and forthcoming developments of UMTS (Universal Mobile Telecommunication System) 7Outlines the rationale and motives behind the evolution of this new mobile telephony system 7Analyzes the requirements of the UMTS system and describes the radio UTRA (UMTS Terrestrial Radio Access) and the UTRAN (UTRA Network) together with Core Network Issues 7Provides an overview of the new voice, data and multimedia services that will be available to users 7Reviews the current trends that will affect future research and discusses key topics, including SDMA (Space Division Multiple Access) smart antennas and software radio Written in an easily accesible style, UMTS: Mobile Communications for the Future will prove indispensable reading for all those working in the area of mobile communciations.
Описание: Sections on important areas such as spread spectrum, cellular communications, and orthogonal frequency--division multiplexing are provided. Computational examples are included, illustrating how to use the computer as a simulation tool, thereby allowing waveforms, spectra, and performance curves to be generated. Overviews of the necessary background in signal, system, probability, and random process theory required for the analog and digital communications topics covered in the book.
Описание: The proposed bookll contain up to date and recent developments in wireless communications from a hardware design perspective. Thirteen chapters will deal with various fundamental research aspects of low power wireless electronics written by world class experts in each field. The book is the result of the Multidisciplinary University Research Initiative (MURI) funded by the Department of Defense.
Описание: Recent years have witnessed an explosion of new operators and customers of cellular mobile communications and the importance of wireless/mobile communications in today's telecommunications industry is indisputable. The Final Report of COST 259, 'Wireless Flexible Personalised Communications' is the result of extensive work, performed by more than 200 European researchers from more than 90 institutions (universities and companies) in the area of mobile radio. * Provides a discussion on the evolution of wireless/mobile communications focusing on the use of data and multimedia, and consequently broadband communications Examines the radio systems aspects of future wireless communication systems, concentrating primarily on physical layer issues and including assessments of OFDM and CDMA Presents radio propagation and adaptive antennas, and provides a thorough understanding of the mobile radio channel Discusses the radio network aspects for the improvement and optimisation of the existing 2G systems and the planning of UMTS/IMT2000 Explains the design and implementation of UMTS and new techniques for future wireless broadband communication systems Due to the broad and comprehensive range of topics covered in this book it will appeal not only to engineers working within the GSM industry but also to those involved in UMTS and to researchers working on the next generation of mobile systems.
Описание: With the introduction of WAP in Europe and I-mode in Japan, mobile terminals took their first steps out of the world of mobile telephony and into the world of mobile data. At the same time, the shift from 2nd generation to 3rd generation cellular technology has increased the potential data rate available to mobile users by tenfold as well as shifting data transport from circuit switched to packet data. These fundamental shifts in nature and the quantity of data available to mobile users has led to an explosion in the number of applications being developed for future digital terminal devices. Though these applications are diverse they share a common need for complex Digital Signal Processing (DSP) and in most cases benefit from the use of programmable DSPs (Digital Signal Processors). Features contributions from experts who discuss the implementation and applications of programmable DSPs Includes detailed introductions to speech coding, speech recognition, video and audio compression, biometric identification and their application for mobile communications devices Discusses the alternative DSP technology which is attempting to unseat the programmable DSP from the heart of tomorrow's mobile terminals Presents innovative new applications that are waiting to be discovered in the unique environment created when mobility meets signal processing The Application of Programmable DSPs in Mobile Communications provides an excellent overview for engineers moving into the area of mobile communications or entrepreneurs looking to understand state of the art in mobile terminals. It is also a must for students and professors looking for new application areas where DSP technology is being applied.
Описание: This work describes Sessions Initiation Protocol (SIP). Its publication coincides with the deployment of real SIP networks debut, and is designed to satisfy the need for guidance on how to integrate and maximize SIP`s power.
Описание: Up-to-date, expert coverage of topics in wireless voice communications Voice communication is the most important facet of mobile radio service. Even when the predicted surge of wireless data and Internet services becomes a reality, voice will remain the most natural means of human communication. Voice Compression and Communications details issues in wireless voice communications and treats compression, channel coding, and wireless transmission as a joint subject. Part I covers background material, whereas Part II provides detailed information on both proprietary and standardized analysis-by-synthesis codecs, including the speech codecs of virtually all existing wireline-based and wireless systems. Parts III and IV discuss mainly research-bad wideband, audio, as well as very low-rate schemes likely to find their way into future standards. Voice Compression and Communications describes fundamental concepts in a non-mathematical way early in the book for those with only a background knowledge of signal processing and communications. More advanced readers will find detailed discussions of theoretical principles, future concepts, and solutions to various specific wireless voice communications problems.
Описание: "Bridging the gap between the video compression and communication communities, this unique volume provides an all-encompassing treatment of wireless video communications, compression, channel coding, and wireless transmission as a joint subject. WIRELESS VIDEO COMMUNICATIONS begins with relatively simple compression and information theoretical principles, continues through state-of-the-art and future concepts, and concludes with implementation-ready system solutions. This books deductive presentation and broad scope make it essential for anyone interested in wireless communications. It systematically converts the lessons of Shannons information theory into design principles applicable to practical wireless systems. It provides in a comprehensive manner implementation-ready? overall system esign and performance studies, giving cognizance to the contradictory design requirements of video quality, bit rate, delay, complexity error resilience, and other related system design aspects. Topics covered include * information theoretical foundations* block-based and convolutional channel coding* very-low-bit-rate video codecs and multimode videophone transceivers* high-resolution video coding using both proprietary and standard schemes* CDMA/OFDM systems, third-generation and beyond adaptive video systems. WIRELESS VIDEO COMMUNICATIONS is a valuable reference for postgraduate researchers, system engineers, industrialists, managers and visual communications practitioners. Aut the Authors Lajos Hanzo has enjoyed a prolific 24-year career during which he has held various research and academic positions in Hungary, Germany, and the United Kingdom. He has coauthored five books on mobile radio communications and published over 300 research papers on a variety of topics. Dr. Hanzos research interests cover the entire spectrum of mobile multimedia communications, including voice, audio, video and graphic source compression, channel coding, modulation, networking and the joint optimization of these system components. He holds a chair in communications in the Department of Electronics and Computer Science at the University of Southampton, England, and he is a consultant to Multiple Access Communications Ltd. Peter J. Cherriman graduated in 1994 with an M.Eng. In information engineering from the University of Southampton. Since 1994, he has been with the Department of Electronics and Computer Science at the University of Southampton, where he completed his Ph.D. in mobile video networking. Dr. Cherriman is working on projects for the Mobile Virtual Centre of Excellence, U.K. His current areas of research include robust video coding, microcellular radio systems, power control, dynamic channel allocation, and multiple access protocols. Jurgen Streit received his Dipl.-Ing. in electronic engineering from the Aachen University of Technology, Germany, in 1993. Since 1992 he has been with the Department of Electronics and Computer Science at the University of Southampton, working with the Mobile Multimedia Communications Research Group. Dr. Streit earned a Ph.D. in image coding, and he is currently working as a software consultant."
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