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IP телефон UNIFY COMMUNICATIONS OpenScape CP205 [l30250-f600-c432]


дисплей: монохромный; цвет: черный

22350 RUR

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Трубка UNIFY COMMUNICATIONS OpenScape S5 [l30250-f600-c500]


дисплей: цветной; питание: собственный аккумулятор; цвет: серебристый

21100 RUR

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IP телефон UNIFY COMMUNICATIONS OpenStage 40 [l30250-f600-c247]


дисплей: монохромный; питание: сетевой адаптер/PoE; цвет: черный

32100 RUR

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IP телефон UNIFY COMMUNICATIONS OpenScape 55G [l30250-f600-c290]


дисплей: монохромный; питание: сетевой адаптер; цвет: черный

37560 RUR

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Трубка UNIFY COMMUNICATIONS OpenStage WL3 [l30250-f600-c311]


дисплей: цветной; питание: собственный аккумулятор; цвет: черный

78970 RUR

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Erwin Matthias Beyer The Bank of Communications and its Notes


The Bank of Communications and its NotesИздательство: GrafschaftСерия:

1000 RUR

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IP телефон UNIFY COMMUNICATIONS OpenScape 35G Eco [l30250-f600-c420]


дисплей: монохромный; питание: от сети; цвет: черный

19020 RUR

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Маршрутизатор Zyxel LTE4506-M606, LTE4506-M606-EU01V1F, белый


LTE4506 – это портативный маршрутизатор нового поколения, соответствующий стандарту LTE Category 6. Технология Carrier Aggregation обеспечивает скорость загрузки данных из Интернета до 300 Mbps, что вдвое быстрее по сравнению с Category 4 и вдвое быстрее проводного Fast Ethernet.

9258 RUR

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Трубка UNIFY COMMUNICATIONS OpenStage WL3 [l30250-f600-c310]


дисплей: цветной; питание: собственный аккумулятор; цвет: черный

46560 RUR

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Радиотелефон UNIFY COMMUNICATIONS OpenScape SL5, серебристый [l30250-f600-c450]


bluetooth; однолинейный; подсветка клавиатуры; полифония; в комплекте 1 радиотрубка

30930 RUR

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Jim Taylor Deep Space Communications


A collection of some of the Jet Propulsion Laboratory's space missions selected to represent the planetary communications designs for a progression of various types of missions The text uses a case study approach to show the communications link performance resulting from the planetary communications design developed by the Jet Propulsion Laboratory (JPL). This is accomplished through the description of the design and performance of six representative planetary missions. These six cases illustrate progression through time of the communications system's capabilities and performance from 1970s technology to the most recent missions. The six missions discussed in this book span the Voyager for fly-bys in the 1970s, Galileo for orbiters in the 1980s, Deep Space 1 for the 1990s, Mars Reconnaissance Orbiter (MRO) for planetary orbiters, Mars Exploration Rover (MER) for planetary rovers in the 2000s, and the MSL rover in the 2010s. Deep Space Communications: Provides an overview of the Deep Space Network and its capabilities Examines case studies to illustrate the progression of system design and performance from mission to mission and provides a broad overview of the missions systems described Discusses actual flight mission telecom performance of each system Deep Space Communications serves as a reference for scientists and engineers interested in communications systems for deep-space telecommunications link analysis and design control.

12690.78 RUR

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Кабель APC CATEGORY 5 UTP 568B PATCH CABLE GREY RJ45M/R 3827GY-5

Paul Antonik Smart Grid using Big Data Analytics. A Random Matrix Theory Approach


This book is aimed at students in communications and signal processing who want to extend their skills in the energy area. It describes power systems and why these backgrounds are so useful to smart grid, wireless communications being very different to traditional wireline communications.

9517.52 RUR

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Oriol Sallent Mobile Broadband Communications for Public Safety. The Road Ahead Through LTE Technology


This book provides a timely and comprehensive overview of the introduction of LTE technology for PPDR communications. It describes the operational scenarios and emerging multimedia and data-centric applications in demand and discusses the main techno-economic drivers that are believed to be pivotal for an efficient and cost-effective delivery of mobile broadband PPDR communications. The capabilities and features of the LTE standard for improved support of mission-critical communications (e.g., proximity services, group communications) are covered in detail. Also, different network implementation options to deliver mobile broadband PPDR communications services over dedicated or commercial LTE-based networks are discussed, including the applicability of the Mobile Virtual Network Operator (MVNO) model and other hybrid models. Radio spectrum matters are also discussed in depth, outlining spectrum needs and providing an outlook into allocated and candidate spectrum bands for PPDR communications and suitable dynamic spectrum sharing solutions in PPDR communications. Explanations are accompanied by a vast collection of references that allow the more intrigued reader to gain further insight into the addressed topics.

9120.96 RUR

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Zhang Honggang Cognitive Communications. Distributed Artificial Intelligence (DAI), Regulatory Policy and Economics, Implementation


This book discusses in-depth the concept of distributed artificial intelligence (DAI) and its application to cognitive communications In this book, the authors present an overview of cognitive communications, encompassing both cognitive radio and cognitive networks, and also other application areas such as cognitive acoustics. The book also explains the specific rationale for the integration of different forms of distributed artificial intelligence into cognitive communications, something which is often neglected in many forms of technical contributions available today. Furthermore, the chapters are divided into four disciplines: wireless communications, distributed artificial intelligence, regulatory policy and economics and implementation. The book contains contributions from leading experts (academia and industry) in the field. Key Features: Covers the broader field of cognitive communications as a whole, addressing application to communication systems in general (e.g. cognitive acoustics and Distributed Artificial Intelligence (DAI) Illustrates how different DAI based techniques can be used to self-organise the radio spectrum Explores the regulatory, policy and economic issues of cognitive communications in the context of secondary spectrum access Discusses application and implementation of cognitive communications techniques in different application areas (e.g. Cognitive Femtocell Networks (CFN) Written by experts in the field from both academia and industry Cognitive Communications will be an invaluable guide for research community (PhD students, researchers) in the areas of wireless communications, and development engineers involved in the design and development of mobile, portable and fixed wireless systems., wireless network design engineer. Undergraduate and postgraduate students on elective courses in electronic engineering or computer science, and the research and engineering community will also find this book of interest.

14087.97 RUR

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Louis J. Ippolito, Jr. Satellite Communications Systems Engineering. Atmospheric Effects, Link Design and System Performance


The first edition of Satellite Communications Systems Engineering (Wiley 2008) was written for those concerned with the design and performance of satellite communications systems employed in fixed point to point, broadcasting, mobile, radio navigation, data relay, computer communications, and related satellite based applications. This welcome Second Edition continues the basic premise and enhances the publication with the latest updated information and new technologies developed since the publication of the first edition. The book is based on graduate level satellite communications course material and has served as the primary text for electrical engineering Masters and Doctoral level courses in satellite communications and related areas. Introductory to advanced engineering level students in electrical, communications and wireless network courses, and electrical engineers, communications engineers, systems engineers, and wireless network engineers looking for a refresher will find this essential text invaluable.

10311.4 RUR

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Sarah Durham Brandraising. How Nonprofits Raise Visibility and Money Through Smart Communications


In the current economic climate, nonprofits need to focus on ways to stand out from the crowd, win charitable dollars, and survive the downturn. Effective, mission-focused communications can help organizations build strong identities, heightened reputations, and increased fundraising capability. Brandraising outlines a mission-driven approach to communications and marketing, specifically designed to boost fundraising efforts. This book provides tools and guidance for nonprofits seeking to transform their communications and marketing through smart positioning, branding, campaigns, and materials that leverage solid strategy and great creative, with a unique focus on the intersection of communications and fundraising.

3682.08 RUR

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Alejandro Aragón-Zavala Indoor Wireless Communications. From Theory to Implementation


Indoor Wireless Communications: From Theory to Implementation provides an in-depth reference for design engineers, system planners and post graduate students interested in the vastly popular field of indoor wireless communications. It contains wireless applications and services for in-building scenarios and knowledge of key elements in the design and implementation of these systems. Technologies such as Wireless Local Area Networks, Bluetooth, ZigBee, Indoor Optical Communications, WiMAX, UMTS and GSM for indoor environments are fully explained and illustrated with examples. Antennas and propagation issues for in-building scenarios are also discussed, emphasizing models and antenna types specifically developed for indoor communications. An exhaustive survey on indoor wireless communication equipment is also presented, covering all available technologies including antennas, distribution systems, transceivers and base stations.

9517.52 RUR

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Nicolas Larrieu Aeronautical Air-Ground Data Link Communications


This book deals with air-ground aeronautical communications. The main goal is to give the reader a survey of the currently deployed, emerging and future communications systems dedicated to digital data communications between the aircraft and the ground, namely the data link. Those communication systems show specific properties relatively to those commonly used for terrestrial communications. In this book, the system architectures are more specifically considered from the access to the application layers as radio and physical functionalities have already been addressed in detail in others books. The first part is an introduction to aeronautical communications, their specific concepts, properties, requirements and terminology. The second part presents the currently used systems for air ground communications in continental and oceanic area. The third part enlightens the reader on the emerging and future communication systems and some leading research projects focused on this scope. Finally, before the conclusion, the fourth part gives several main challenges and research directions currently under investigation.

6979.36 RUR

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Teresa Braun M. Satellite Communications Payload and System


This is the first book primarily about the satellite payload of satellite communications systems. It represents a unique combination of practical systems engineering and communications theory. It tells about the satellites in geostationary and low-earth orbits today, both the so-called bent-pipe payloads and the processing payloads. The on-orbit environment, mitigated by the spacecraft bus, is described. The payload units (e.g. antennas and amplifiers), as well as payload-integration elements (e.g. waveguide and switches) are discussed in regard to how they work, what they do to the signal, their technology, environment sensitivity, and specifications. At a higher level are discussions on the payload as an entity: architecture including redundancy; specifications–what they mean, how they relate to unit specifications, and how to verify; and specification-compliance analysis (“budgets”) with uncertainty. Aspects of probability theory handy for calculating and using uncertainty and variation are presented. The highest-level discussions, on the end-to-end communications system, start with a practical introduction to physical-layer communications theory. Atmospheric effects and interference on the communications link are described. A chapter gives an example of optimizing a multibeam payload via probabilistic analysis. Finally, practical tips on system simulation and emulation are provided. The carrier frequencies treated are 1 GHz and above. Familiarity with Fourier analysis will enhance understanding of some topics. References are provided throughout the book for readers who want to dig deeper. Payload systems engineers, payload proposal writers, satellite-communications systems designers and analysts, and satellite customers will find that the book cuts their learning time. Spacecraft-bus systems engineers, payload unit engineers, and spacecraft operators will gain insight into the overall system. Students in systems engineering, microwave engineering, communications theory, probability theory, and communications simulation and modelling will find examples to supplement theoretical texts.

8320.71 RUR

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Behzad Razavi Design of Integrated Circuits for Optical Communications


The only book on integrated circuits for optical communications that fully covers High-Speed IOs, PLLs, CDRs, and transceiver design including optical communication The increasing demand for high-speed transport of data has revitalized optical communications, leading to extensive work on high-speed device and circuit design. With the proliferation of the Internet and the rise in the speed of microprocessors and memories, the transport of data continues to be the bottleneck, motivating work on faster communication channels. Design of Integrated Circuits for Optical Communications, Second Edition deals with the design of high-speed integrated circuits for optical communication transceivers. Building upon a detailed understanding of optical devices, the book describes the analysis and design of critical building blocks, such as transimpedance and limiting amplifiers, laser drivers, phase-locked loops, oscillators, clock and data recovery circuits, and multiplexers. The Second Edition of this bestselling textbook has been fully updated with: A tutorial treatment of broadband circuits for both students and engineers New and unique information dealing with clock and data recovery circuits and multiplexers A chapter dedicated to burst-mode optical communications A detailed study of new circuit developments for optical transceivers An examination of recent implementations in CMOS technology This text is ideal for senior graduate students and engineers involved in high-speed circuit design for optical communications, as well as the more general field of wireline communications.

10565.98 RUR

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Andres Kwasinski 3D Visual Communications


Provides coverage of the major theories and technologies involved in the lifecycle of 3D video content delivery Presenting the technologies used in end-to-end 3D video communication systems, this reference covers 3D graphics and video coding, content creation and display, and communications and networking. It covers the full range of key areas from the fundamentals of 3D visual representation to the latest 3D video coding techniques, relevant communication infrastructure and networks to the 3D quality of experience. The book is structured to logically lead readers through the topic, starting with generic and fundamental information, continuing with a detailed section of different visualisation techniques before concluding with an extensive view of 3D mobile communication systems and trends. The authors give most focus to four important areas: 3D video coding and communications; 3D graphics/gaming and mobile communications; end-to-end 3D ecosystem (including 3D display, 3D player, networking facility and 3D quality issues), and future communications and networks advances for emerging 3D experience. Presents the theory and key concepts behind the latest 3D visual coding framework, standards, and corresponding quality assessment Provides fundamental material which forms the basis for future research on enhancing the performance of 3D visual communications over current and future wireless networks Covers important topics including: 3D video coding and communications; 3D graphics/gaming and mobile communications; end-to-end 3D ecosystem; and future communications and networks advances for emerging 3D experience Essential reading for engineers involved in the research, design and development of 3D visual coding and 3D visual transmission systems and technologies, as well as academic and industrial researchers.

10548.43 RUR

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Майкл Соснин Работа или бизнес. Communications


Communications Данная часть книги посвящена по традиции тому, что называется глобализация бизнеса. Я говорю очень простыми словами, чтобы показать, что человек остается человеком вне зависимости от того, как много он знает или как много миллиардеров он видел в своей жизни.

48 RUR

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