Diversity in spaces and polarizatin applied on urban cellular mobile systems

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Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (181 download)

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Book Synopsis Diversity in spaces and polarizatin applied on urban cellular mobile systems by :

Download or read book Diversity in spaces and polarizatin applied on urban cellular mobile systems written by and published by . This book was released on 1909 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Neste trabalho foi desenvolvido um estudo experimental do uso de técnicas de diversidade para combater o efeito de desvanecimento em sistemas de comunicação móveis celulares. Uma revisão da teoria mostrou os principais métodos de diversidade existentes e as técnicas usadas para combinar os diferentes sinais dos braços da diversidade e assim produzir um ganho em relação ao sinal desvanecido. Um laboratório móvel foi montado e uma extensiva campanha de medidas foi realizada numa região urbana da cidade do Rio de Janeiro. Devido às perspectivas de implementação dos sistemas de comunicação pessoal e da terceira geração dos sistemas celulares, neste trabalho usou-se freqüências na faixa de 900 e de 1800 MHz. Deste modo pode se estabelecer uma comparação entre os ganhos de diversidade nestas duas freqüências. Resultados de medidas de diversidade em espaço e em polarização na estação rádio base mostraram que estas técnicas são comparáveis em termos dos ganhos proporcionados. Uma contribuição importante deste trabalho foi na determinação dos efeitos do uso de diversidade combinada entre espaço e polarização. Neste caso, duas portas em polarização cruzada de duas antenas separadas espacialmente foram utilizadas.

Modern Antenna Handbook

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Publisher : John Wiley & Sons
ISBN 13 : 1118209753
Total Pages : 1617 pages
Book Rating : 4.1/5 (182 download)

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Book Synopsis Modern Antenna Handbook by : Constantine A. Balanis

Download or read book Modern Antenna Handbook written by Constantine A. Balanis and published by John Wiley & Sons. This book was released on 2011-09-20 with total page 1617 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most up-to-date, comprehensive treatment of classical and modern antennas and their related technologies Modern Antenna Handbook represents the most current and complete thinking in the field of antennas. The handbook is edited by one of the most recognizable, prominent, and prolific authors, educators, and researchers on antennas and electromagnetics. Each chapter is authored by one or more leading international experts and includes cover-age of current and future antenna-related technology. The information is of a practical nature and is intended to be useful for researchers as well as practicing engineers. From the fundamental parameters of antennas to antennas for mobile wireless communications and medical applications, Modern Antenna Handbook covers everything professional engineers, consultants, researchers, and students need to know about the recent developments and the future direction of this fast-paced field. In addition to antenna topics, the handbook also covers modern technologies such as metamaterials, microelectromechanical systems (MEMS), frequency selective surfaces (FSS), and radar cross sections (RCS) and their applications to antennas, while five chapters are devoted to advanced numerical/computational methods targeted primarily for the analysis and design of antennas.

Mobile Antenna Systems Handbook

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Publisher : Artech House
ISBN 13 : 9781580530071
Total Pages : 744 pages
Book Rating : 4.5/5 (3 download)

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Book Synopsis Mobile Antenna Systems Handbook by : Kyōhei Fujimoto

Download or read book Mobile Antenna Systems Handbook written by Kyōhei Fujimoto and published by Artech House. This book was released on 2001 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an extensively revised and updated new edition of the best-selling Mobile Antenna Systems Handbook. Comprehensive, authoritative and practical, it provides the information you need to understand the relationship between the elements involved in antenna systems design for mobile communications. You get sound advice in choosing the appropriate antenna for any given requirement - including antennas for ITS, access to the latest modeling formulas for macro, micro and pico cell propagation, and guidance on the latest RF safety standards and measurement techniques.

Wireless Network Evolution: 2G to 3G

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Publisher : Pearson Education India
ISBN 13 : 9788131713464
Total Pages : 800 pages
Book Rating : 4.7/5 (134 download)

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Book Synopsis Wireless Network Evolution: 2G to 3G by : Garg

Download or read book Wireless Network Evolution: 2G to 3G written by Garg and published by Pearson Education India. This book was released on 2002-09 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Wireless Personal Communications

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Publisher : Springer Science & Business Media
ISBN 13 : 1461313317
Total Pages : 223 pages
Book Rating : 4.4/5 (613 download)

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Book Synopsis Wireless Personal Communications by : Theodore S. Rappaport

Download or read book Wireless Personal Communications written by Theodore S. Rappaport and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wireless personal communications, or wireless as it is now being called, has arrived. The hype is starting to fade, and the hard work of deploying new systems and services for personal communications is underway. In the United States, the FCC propelled the wireless era from infancy to mainstream with a $7.7 billion auction of 60 MHz of radio spectrum in the 180011900 MHz band. With the largest single sale of public property in the history of mankind mostly complete, the resources of the entire world are being called upon to develop inexpensive, rapidly deployable wireless systems and sub scriber units for an industry that is adding subscribers at greater than 50% annual rate. This growth is commonplace for wireless service companies throughout the world, and in the U.S., where as many as 7 licensed wireless service providers may be competing for cellularfPCS customers within the next couple of years, differentiators in cost, qual ity, service, and coverage will become critical to customer acceptance and use. Many of these issues are discussed in the papers included in this book.

Mobile Antenna Systems Handbook

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Publisher : Artech House
ISBN 13 : 1596931272
Total Pages : 790 pages
Book Rating : 4.5/5 (969 download)

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Book Synopsis Mobile Antenna Systems Handbook by : Kyohei Fujimoto

Download or read book Mobile Antenna Systems Handbook written by Kyohei Fujimoto and published by Artech House. This book was released on 2008 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt: This extensively revised and expanded edition of the Artech bestseller Mobile Antenna Systems Handbook puts the very latest technologies, design and analysis procedures, and applications at your command. It features all-new chapters on smart antennas, MIMO systems, and antennas for recently deployed mobile systems such as RFID, UWB, and terrestrial digital TV broadcasting, and provides a wealth of problem-solving guidance for tackling everything from propagation obstacles to SAR safety issues. Like the previous editions, this ultimate one-stop reference is designed to save you a mountain of work. You get hands-on expertise for every type of mobile antenna base station and terminal system, including its theory of operation, application strengths and weaknesses, performance characteristics, design procedures, analysis techniques, and optimization methods, complete with examples and worked-out calculations at every step. The material is further clarified with 567 diagrams, charts, and photos, bringing mobile antenna selection, design, and construction into clear focus. What's more, this resource includes a detailed glossary of antennas and their applications to help you zero in on the right antenna for any job with a flip of the page. From integrating MIMO antennas into handsets, to expanding system capacities with smart antennas, this information-packed resource helps you evaluate design and configuration options, locate crucial data and calculations, perform key analyses, and solve challenges standing in the way of your desired results. It serves as an indispensable reference, helping you design more powerful, versatile, and compact wireless mobile antenna systems.

Wireless Network Deployments

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Publisher : Springer Science & Business Media
ISBN 13 : 0306473313
Total Pages : 270 pages
Book Rating : 4.3/5 (64 download)

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Book Synopsis Wireless Network Deployments by : Rajamani Ganesh

Download or read book Wireless Network Deployments written by Rajamani Ganesh and published by Springer Science & Business Media. This book was released on 2005-12-27 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: An important aspect of wireless networks is the deployment of their infrastructure. In this book, the Editors have invited a number of experts from industry to write on a variety of topics associated with deployment of digital wireless networks. The first part of the book consists of an overview of systems design and engineering integration, comparison of polarization and space diversity antenna systems, and the performance of deploying smart antenna architectures in cellular and PCS networks. The second part addresses deployment of CDMA networks, based on IS-95 standards. Here the authors discuss issues related to optimization of overlaid dual model CDMA networks, embedding microcells to improve hot-spot capacity, and mitigation of intermodulation distortion in handsets. Part III deals with deployment of TDMA- based networks. The issues presented include developing hierarchical systems, reconfigurable transceivers, and deploying the GSM frequency hopping feature for enhancing existing traffic capacity. The last part, on Wireless Data Networks, is comprised of issues related to the performance of GPRS systems deployed as an upgrade on current networks and deployment of wireless LANs. Critical issues for deploying an IEEE 802.11-based WLAN are examined. Wireless Network Deployments provides practical engineering guidance for wireless and cellular engineers, researchers, technicians, and managers working in second and third generation digital wireless networks.

Adaptive Antennas for Wireless Communications

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Publisher : Wiley-IEEE Press
ISBN 13 :
Total Pages : 788 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Adaptive Antennas for Wireless Communications by : George V. Tsoulos

Download or read book Adaptive Antennas for Wireless Communications written by George V. Tsoulos and published by Wiley-IEEE Press. This book was released on 2001-01-15 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electrical Engineering Adaptive Antennas for Wireless Communications 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.

IS-95 CDMA and cdma2000

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Publisher : Pearson Education
ISBN 13 : 0132442000
Total Pages : 611 pages
Book Rating : 4.1/5 (324 download)

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Book Synopsis IS-95 CDMA and cdma2000 by : Vijay K. Garg

Download or read book IS-95 CDMA and cdma2000 written by Vijay K. Garg and published by Pearson Education. This book was released on 1999-12-09 with total page 611 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Next Generation: Wireless Communications for Multimedia and Beyond Of all wireless technologies for personal communications, Code Division Multiple Access (CDMA) offers the best combination of good signal quality, high security, low power consumption, and excellent system reliability. Features added in the IS-95 standard means this impressive list now also includes Third Generation (3G) data capabilities that will allow CDMA providers to offer Internet and intranet services for multimedia applications, high-speed business transactions, and telemetry. The upcoming cdma2000 standard will further expand usable bandwidth without sacrificing voice quality or requiring additional spectrum. In this book by an experienced telecommunications authority, you will learn how to maximize the power of CDMA, migrate existing systems to the newest standards, and prepare for a smooth transition to features yet to come. IS-95 CDMA and cdma2000: Cellular/PCS Systems Implementation covers all aspects of up-to-date CDMA implementation and operation, including: Coding and architecture Radio interface and call flow Physical, data link, and signaling layers Handoff and power control System security Wireless Data Reverse and Forward Link Capacity RF Engineering and network planning Evolution to Third Generation systems Practicing engineers and their managers will benefit from the in-depth coverage of IS-95 systems, RF engineering, and capacity planning. Students will appreciate the forward-looking approach that offers a look at the future of the industry where they are preparing for careers. IS-95 CDMA and cdma2000: Cellular/PCS Systems Implementation offers both practical applications information and conveniently organized reference materials for anyone interested in the next generation of wireless telecommunications.

Smart Antennas

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Publisher : Institute of Electrical & Electronics Engineers(IEEE)
ISBN 13 :
Total Pages : 568 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Smart Antennas by : Theodore S. Rappaport

Download or read book Smart Antennas written by Theodore S. Rappaport and published by Institute of Electrical & Electronics Engineers(IEEE). This book was released on 1998 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this compendium, you will find some of the classical publications and most promising research papers which have and will continue to impact the emerging field of wireless adaptive arrays. The papers have been compiled based on graduate student research at the Mobile and Portable Radio Research Group (MPRG) at Virginia Tech. This book is a handy, single-source reference to assist graduate students, researchers, and practitioners involved with the design, development, and deployment of smart antenna technology.

The Communications Handbook

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Publisher : CRC Press
ISBN 13 : 1420041169
Total Pages : 1616 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis The Communications Handbook by : Jerry D. Gibson

Download or read book The Communications Handbook written by Jerry D. Gibson and published by CRC Press. This book was released on 2018-10-08 with total page 1616 pages. Available in PDF, EPUB and Kindle. Book excerpt: For more than six years, The Communications Handbook stood as the definitive, one-stop reference for the entire field. With new chapters and extensive revisions that reflect recent technological advances, the second edition is now poised to take its place on the desks of engineers, researchers, and students around the world. From fundamental theory to state-of-the-art applications, The Communications Handbook covers more areas of specialty with greater depth that any other handbook available. Telephony Communication networks Optical communications Satellite communications Wireless communications Source compression Data recording Expertly written, skillfully presented, and masterfully compiled, The Communications Handbook provides a perfect balance of essential information, background material, technical details, and international telecommunications standards. Whether you design, implement, buy, or sell communications systems, components, or services, you'll find this to be the one resource you can turn to for fast, reliable, answers.

Innovations in Telecommunications Part A

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Publisher : Elsevier
ISBN 13 : 0323145566
Total Pages : 575 pages
Book Rating : 4.3/5 (231 download)

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Book Synopsis Innovations in Telecommunications Part A by : Jamal Manassah

Download or read book Innovations in Telecommunications Part A written by Jamal Manassah and published by Elsevier. This book was released on 2012-12-02 with total page 575 pages. Available in PDF, EPUB and Kindle. Book excerpt: Innovations in Telecommunications, Part A contains the proceedings of the symposium on "Innovations in Telecommunications" of the International Symposium Series held in Kuwait in April 1981 and sponsored by the Kuwait Foundation for the Advancement of Science. The symposium provided a forum for reviewing advances in research, development, demonstration, design, manufacture, field testing, and application in the field of telecommunications. Both the state of the art and the cutting edge of technology in telecommunications are given emphasis. Comprised of 17 chapters, this book is arranged in five major sections: signal processing; devices and microfabrication techniques; terrestrial communications; satellite communication; and applications. The discussion begins with an assessment of trends in electronic information transfer, followed by a description of a bandwidth- and power-efficient modulation system that combines convolutional encoding and phase modulation. Subsequent chapters deal with voice processing techniques; image processing for communication; developments in switching; and devices such as those for transmission and delta modulation. The final section is devoted to terrestrial communications and covers microwave systems, mobile and lightwave communications, and coaxial cable systems for land and sea. This monograph will be of interest to those in the telecommunications industry.

Conference Record

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Publisher :
ISBN 13 :
Total Pages : 630 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Conference Record by :

Download or read book Conference Record written by and published by . This book was released on 1999 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Eleventh International Conference on Antennas and Propagation

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Publisher :
ISBN 13 :
Total Pages : 528 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis Eleventh International Conference on Antennas and Propagation by :

Download or read book Eleventh International Conference on Antennas and Propagation written by and published by . This book was released on 2001 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Ninth International Conference on Antennas and Propagation

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Publisher :
ISBN 13 :
Total Pages : 436 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Ninth International Conference on Antennas and Propagation by :

Download or read book Ninth International Conference on Antennas and Propagation written by and published by . This book was released on 1995 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:

IEICE Transactions on Communications, Electronics, Information, and Systems

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Publisher :
ISBN 13 :
Total Pages : 1212 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis IEICE Transactions on Communications, Electronics, Information, and Systems by :

Download or read book IEICE Transactions on Communications, Electronics, Information, and Systems written by and published by . This book was released on 1991-04 with total page 1212 pages. Available in PDF, EPUB and Kindle. Book excerpt:

International Conference on Antennas and Propagation

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Publisher :
ISBN 13 :
Total Pages : 444 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis International Conference on Antennas and Propagation by :

Download or read book International Conference on Antennas and Propagation written by and published by . This book was released on 1995 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: