Описание: The book describes how interference can be managed so that radio systems co-exist, without harmful mutual effects, within a finite amount of spectrum. This is timely in view of the increasing proliferation of wireless systems.
Автор: Hu Название: Multimedia over Cognitive Radio Networks ISBN: 1482214857 ISBN-13(EAN): 9781482214857 Издательство: Taylor&Francis Рейтинг: Цена: 19140.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание:
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.
Автор: Salous Название: Radio Propogation Measurement and Channel Modelling ISBN: 0470751843 ISBN-13(EAN): 9780470751848 Издательство: Wiley Рейтинг: Цена: 14406.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: This is the first book focusing on radio channel measurements and characterization with specific analysis of MIMO and bidirectional channels. It discusses the physical and technical considerations involved in the proper assessment of radio channel characteristics for efficient radio system planning, design, and implementation.
Автор: Gibilisco Stan Название: Ham and Shortwave Radio for the Electronics Hobbyist ISBN: 0071832912 ISBN-13(EAN): 9780071832915 Издательство: McGraw-Hill Рейтинг: Цена: 3430.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Bestselling electronics author Stan Gibilisco shows how to get up and running as a licensed ham radio operator or just listen in on the shortwave bands.
Автор: Van De Hulst Название: Radio Astronomy ISBN: 1316612813 ISBN-13(EAN): 9781316612811 Издательство: Cambridge Academ Рейтинг: Цена: 7762.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Originally published in 1957, this book presents symposium number 4, organised by the International Astronomical Union, held on 25th-27th August 1955. The papers are broad in scope and detailed; chapter titles include, `Spectral line investigations`, `Galactic structure and statistical studies of point sources` and `Meteors and planets`.
Описание: The universalmobiletelecommunications system (UMTS) is a technical standard for a third generation (3G) telecommunication system. UMTS provides data rates more than three 1 times higher than its second generation (2G) predecessors. The increased speed en- ables, for example, video calls, music downloads, or fast web surfing. The technology is already widely available. In 2007, a total of 166 commercial UMTS radio networks are operational in 66 countries covering all continents (UMTS Forum, 207), and there are already more than 100 million UMTS subscribers (3GToday. com, 2007; UMTS Forum, 2006). The market for mobile telecommunication is, however, increasingly competi- tive, therefore operators need to invest effectively. In Western Europe, mobile phone penetration has reached 100 % in 2006 and the average revenue per customer is de- clining (3G. co. uk, 2007). Besides spectrum license fees, the main cost driver is network infrastructure (Ellingeret al., 2002). Radio network planning can cut operational and capital expenditure by up to 30 % (Dehghan, 2005). Good radio network planning is difficult for UMTS, because its radio interface is more complex than anything used at mass-market level before (Dehghan, 2005). Con- nections are separated via codes; they share the same frequency band and are thus subject to interference. On each link, the system constantly regulates the amount of generated interference to a minimum via a power-control feedback loop.
Описание: Today`s wireless services have come a long way since the roll out of the conventional voice-centric cellular systems. This book discusses the cognitive radio, software defined radio, and adaptive radio concepts from several perspectives.
Автор: Peter Stavroulakis Название: TErrestrial Trunked RAdio - TETRA ISBN: 364209029X ISBN-13(EAN): 9783642090295 Издательство: Springer Рейтинг: Цена: 23508.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Terrestrial Trunked Radio (TETRA) has become the tool to design any type of public security systems, in particular due to the strongly increased security demands for mobile systems.
Автор: Joseph Shapira; Samuel Miller Название: CDMA Radio with Repeaters ISBN: 1441938842 ISBN-13(EAN): 9781441938848 Издательство: Springer Рейтинг: Цена: 30606.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: The book addresses the role of repeaters in the CDMA network, their interaction with the network and the needed integrative design and optimization of the repeater-embedded network. The approach of the book is to develop functional comprehension of the complex radio network, and affinity to the factors dominating the Radio Resource Utilization.
Автор: Krauss, Herbert L. Bostian, Charles W. Raab, Frede Название: Solid state radio engineering ISBN: 047103018X ISBN-13(EAN): 9780471030188 Издательство: Wiley Рейтинг: Цена: 40542.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Elizabeth Gaskell`s Life of Charlotte Bronte (1857) is a pioneering biography of one great Victorian woman novelist by another. This edition is based on the Third Edition of 1857, revised by Gaskell and collated with the manuscript and the previous two editions, as well as with Charlotte Bronte`s letters, offering fuller information about the process of composition than any previous edition.
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