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Author : Vijay K. Bhargava,Y. S. Rao,A. K. Seth
Publisher : Unknown
Page : 238 pages
File Size : 51,6 Mb
Release : 1994
Category : Mobile communication systems
ISBN : OCLC:47875308
Author : Vijay K. Bhargava,Y. S. Rao,A. K. Seth
Publisher : Institute of Electrical & Electronics Engineers(IEEE)
Page : 238 pages
File Size : 52,9 Mb
Release : 1994
Category : Mobile communication systems
ISBN : 0780319966
Author : Carl R. Nassar,Bala Natarajan,Zhiqiang Wu,David A. Wiegandt,S. Alireza Zekavat,Steve Shattil
Publisher : Springer Science & Business Media
Page : 208 pages
File Size : 42,5 Mb
Release : 2006-07-06
Category : Technology & Engineering
ISBN : 9780306473081
Multi-carrier technologies have emerged as important instruments in telecommunications. OFDM is in the forefront, with its adoption by the IEEE 802.11 standards committee and the European HYPERLAN standards group. Following OFDM, MC-CDMA is also demonstrating considerable promise when compared to competing technologies. According to the authors, these technologies are just the beginning in the coming multi-carrier revolution. In Multi-Carrier Technologies for Wireless Communication, the authors explain how a common multi-carrier platform is being designed for DS-CDMA, TDMA, OFDM and MC-CDMA systems. Findings are presented which show how this multi-carrier platform enhances network capacity and probability of error performance.Specific results include (1) innovation in multi-carrier technologies that are enabling them to become an integral part of TDMA and DS-CDMA systems; and (2) the design of multi-carrier systems to overcome PAPR problems (in, e.g., OFDM). Multi-Carrier Technologies for Wireless Communication is an important book for engineers who work with DS-CDMA, TDMA, OFDM, or MC-CDMA systems, and are seeking new ways of exploiting the wireless medium based on a "smarter" signal processing.
Author : Anonim
Publisher : Unknown
Page : 510 pages
File Size : 50,9 Mb
Release : 1995
Category : Internetworking (Telecommunication)
ISBN : UCSD:31822021417852
Author : Roberto Ramirez-Iniguez,Sevia M. Idrus,Ziran Sun
Publisher : CRC Press
Page : 318 pages
File Size : 51,9 Mb
Release : 2008-04-03
Category : Technology & Engineering
ISBN : 9781000654523
Over the last three decades, interest in Infrared (IR) technology as a medium to convey information has grown considerably. This is reflected by the increasing number of devices such as laptops, PDAs, and mobile phones that incorporate optical wireless transceivers and also by the increasing number of optical wireless links available for indoor and
Author : Anonim
Publisher : Unknown
Page : 540 pages
File Size : 40,7 Mb
Release : 1997
Category : Electronic
ISBN : OCLC:1131985720
Author : J.L. Encarnacao,Jan M. Rabaey
Publisher : Springer
Page : 333 pages
File Size : 42,6 Mb
Release : 2013-03-19
Category : Technology & Engineering
ISBN : 9780387349800
Mobile computing is one of the biggest issues of computer technology, science and industry today. This book looks at the requirements of developing mobile computing systems and the challenges they pose to computer designers. It examines the requirements of mobile computing hardware, infrastructure and communications services. Information security and the data protection aspects of design are considered, together with telecommunications facilities for linking up to the worldwide computer infrastructure. The book also considers the mobility of computer users versus the portability of the equipment. The text also examines current applications of mobile computing in the public sector and future innovative applications.
Author : L. K. Bandyopadhyay,S. K. Chaulya,P. K. Mishra
Publisher : Springer Science & Business Media
Page : 500 pages
File Size : 44,5 Mb
Release : 2009-08-29
Category : Technology & Engineering
ISBN : 9780387981659
Wireless communication has emerged as an independent discipline in the past decades. Everything from cellular voice telephony to wireless data transmission using wireless sensor networks has profoundly impacted the safety, production, and productivity of industries and our lifestyle as well. After a decade of exponential growth, the wireless industry is one of the largest industries in the world. Therefore, it would be an injustice if the wireless communication is not explored for mining industry. Underground mines, which are characterized by their tough working conditions and hazardous environments, require fool-proof mine-wide communication systems for smooth functioning of mine workings and ensuring better safety. Proper and re- able communication systems not only save the machine breakdown time but also help in immediate passing of messages from the vicinity of underground working area to the surface for day-to-day normal mining operations as well as for speedy rescue operations in case of disaster. Therefore, a reliable and effective commu- cation system is an essential requisite for safe working, and maintaining requisite production and productivity of underground mines. Most of the existing systems generally available in underground mines are based on line (wired) communication principle, hence these are unable to withstand in the disaster conditions and dif?cult to deploy in inaccessible places. Therefore, wireless communication is an indispe- able, reliable, and convenient system and essential in case of day-to-day normal duty or disaster situations.
Author : Savo G. Glisic
Publisher : John Wiley & Sons
Page : 1025 pages
File Size : 48,6 Mb
Release : 2011-05-03
Category : Technology & Engineering
ISBN : 9781119991755
ADVANCED WIRELESS COMMUNICATIONS AND INTERNET THIRD EDITION ADVANCED WIRELESS COMMUNICATIONS AND INTERNET Future Evolving Technologies The new edition of Advanced Wireless Communications: 4G Cognitive and Cooperative Broadband Technology, 2nd Edition, including the latest developments In the evolution of wireless communications, the dominant challenges are in the areas of networking and their integration with the Future Internet. Even the classical concept of cellular networks is changing and new technologies are evolving to replace it. To reflect these new trends, Advanced Wireless Communications & INTERNET builds upon the previous volumes, enhancing the existing chapters, and including a number of new topics. Systematically guiding readers from the fundamentals through to advanced areas, each chapter begins with an introductory explanation of the basic problems and solutions followed with an analytical treatment in greater detail. The most important aspects of new emerging technologies in wireless communications are comprehensively covered including: next generation Internet; cloud computing and network virtualization; economics of utility computing and wireless grids and clouds. This gives readers an essential understanding of the overall environment in which future wireless networks will be operating. Furthermore, a number of methodologies for maintaining the network connectivity, by using tools ranging from genetic algorithms to stochastic geometry and random graphs theory, and a discussion on percolation and connectivity, are also offered. The book includes a chapter on network formation games, covering the general models, knowledge based network formation games, and coalition games in wireless ad hoc networks. Illustrates points throughout using real-life case studies drawn from the author’s extensive international experience in the field of telecommunications Fully updated to include the latest developments, key topics covered include: advanced routing and network coding; network stability control; relay-assisted Wireless Networks; multicommodity flow optimization problems, flow optimization in heterogeneous networks, and dynamic resource allocation in computing clouds Methodically guides readers through each topic from basic to advanced areas Focuses on system elements that provide adaptability and re-configurability, and discusses how these features can improve wireless communications system performance Enjoyed this book? Why not tell others about it and write a review on your favourite online bookseller.
Author : Mohsen Kavehrad,M. I. Sakib Chowdhury,Zhou Zhou
Publisher : John Wiley & Sons
Page : 288 pages
File Size : 47,5 Mb
Release : 2015-10-30
Category : Technology & Engineering
ISBN : 9781118887684
This book discusses the fundamental aspects of multiple-source Optical Wireless Applications, including Visible Light Communications (VLC). Moreover, the authors explore VLC performance in several conventional household layouts and investigate the impact of these layouts on VLC. Multiple sources increase multipath distortion. Multi-input- Multi-Output (MIMO) techniques will be included as they provide either reliability improvement or bandwidth efficiency increase. Based on these topics, the book further explores VLC performance in real applications, such as aircraft cabin wireless communications. In addition, the authors describe the Lambertian emitting pattern of LEDs and the diffused features in indoor environments. Based on the theory, they trace light pulses to establish a MIMO indoor wireless channel model on specific sources layout. Next, they generate test data to simulate BER distribution in a room and calculate the outage. Furthermore, addresses the performance improvement when MIMO techniques are applied. Lastly, the authors investigate VLC performance in specific applications, including for aircraft on-board wireless communications. Finally, the pitfalls of MIMO systems are discussed.
Author : Chrisanthi Avgerou,Geoff Walsham
Publisher : Routledge
Page : 289 pages
File Size : 45,9 Mb
Release : 2017-11-01
Category : History
ISBN : 9781351741132
This title was first published in 2000. A discussion of information technology (IT) in developing countries. The contributors can be considered to share the following set of broad premises: information and communication technologies, and related systems, have significant potential to aid the economic growth and improvement of social conditions in the developing world; however, such potential is not released by simply transferring technologies and processes from advanced economies; in order to better serve development needs, people involved with the design, implementation and management of IT-related projects and systems in developing countries must improve their capacity to address the specific contextual characteristics of the organization, sector, country or region within which their work is located. The text thus emphasizes the importance of context in examining the role and value of IT in the developing countries. It focuses attention on the fusion of the activities of "professionals" (technical experts, managers, policy makers) and "users" (more broadly, all other groups affecting or affected by the technologies and systems), with the intention of facilitating locally meaningful and effective change.
Author : Serguei Primak,Valeri Kontorovich,Vladimir Lyandres
Publisher : John Wiley & Sons
Page : 446 pages
File Size : 47,9 Mb
Release : 2005-01-28
Category : Technology & Engineering
ISBN : 9780470021170
Stochastic Methods & their Applications to Communications presents a valuable approach to the modelling, synthesis and numerical simulation of random processes with applications in communications and related fields. The authors provide a detailed account of random processes from an engineering point of view and illustrate the concepts with examples taken from the communications area. The discussions mainly focus on the analysis and synthesis of Markov models of random processes as applied to modelling such phenomena as interference and fading in communications. Encompassing both theory and practice, this original text provides a unified approach to the analysis and generation of continuous, impulsive and mixed random processes based on the Fokker-Planck equation for Markov processes. Presents the cumulated analysis of Markov processes Offers a SDE (Stochastic Differential Equations) approach to the generation of random processes with specified characteristics Includes the modelling of communication channels and interfer ences using SDE Features new results and techniques for the of solution of the generalized Fokker-Planck equation Essential reading for researchers, engineers, and graduate and upper year undergraduate students in the field of communications, signal processing, control, physics and other areas of science, this reference will have wide ranging appeal.
Author : Leif Aarthun Ims
Publisher : Springer Science & Business Media
Page : 379 pages
File Size : 48,9 Mb
Release : 2012-12-06
Category : Technology & Engineering
ISBN : 9781461557951
The access network is expected to be one of the major battlegrounds of telecommunications network operators, since upgrades of the existing narrowband access network will be the critical factor in supplying multimedia broadband services in a competitive market. The future broadband access network architecture needs to be flexible enough to efficiently support the provision of a full set of broadband and narrowband services with a wide range of capacity demands. A wide range of broadband access technologies are available. Furthermore, the key issues in the upgrading of the very cost sensitive access network are financial as well as technological, both for incumbent and new entrant operators. Thus, in order to identify minimum-risk introductory strategies the economic viability of access network broadband upgrades needs to be carefully assessed. However, despite the definite need for techno-economic evaluations, very few books have been published in this field. One of the reasons might be that broadband access network upgrading only very recently gained wide recognition as a key challenge for broadband delivery. Secondly, this kind of strategic work and these studies tend to be considered rather sensitive by operators, and thus both results and methodologies are not usually readily available. Thirdly, the work reported in this book in many respects was a major pioneering effort, which quite ambitiously aimed at modelling the whole life-cycle costs and revenue streams of access network upgrades, as opposed to several other efforts, which often are limited to pure investment cost comparisons.
Author : Glenn E. Peterson
Publisher : AIAA
Page : 622 pages
File Size : 45,5 Mb
Release : 1999
Category : Science
ISBN : 1563473534
The potential threat posed by Leonid meteroids to orbiting spacecraft over the next several years calls for new dynamic mitigation strategies to assist the satellite community in reducing the danger to its vehicles. This book offers deliberate dynamic mitigation strategies to complement the traditional shielding strategies, providing mission operators additional ways to decrease the danger. Five different attitude control and orbit maneuvering options are examined in detail. The information is presented in algorithmic form to allow technically competent, but meteoroid inexperienced, operators to easily understand the phenomena, assess the danger, and implement procedures. Although general in scope, the book emphasizes the Leonid meteor events of the 1998-2002 timeframe.
Author : Anonim
Publisher : Unknown
Page : 354 pages
File Size : 54,5 Mb
Release : 2002
Category : Mobile communication systems
ISBN : UIUC:30112058568046