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3 produkter
721 kr
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Femtocells are low-power wireless access points used in the home and office. They operate in licensed spectrum to connect standard mobile phones (WCDMA, LTE, WiMAX, CDMA and GSM) and other mobile devices to a mobile operator’s network via standard broadband internet connections. This technology is of high interest for mobile operators and for millions of users who will benefit from enhanced access to mobile broadband services. Femtocells outlines how wireless access points can be used by mobile operators to provide high-speed wireless access, enhancing coverage and capacity and delivering entirely new services, while maximising the benefits of licensed spectrum. The book examines the market, exploring commercial and technical factors which are critical in the initial deployment and long-term success of femtocells. Business, standards and regulatory aspects are also considered to provide a complete but concise overview. One of the first authoritative texts to concentrate on femtocellsWritten by expert authors from industry including leading analysts, femtocell and system vendorsCovers both technology and business aspects in detailProvides overview of the relevant standards across WCDMA, LTE, CDMA, WiMAX and GSM air interfaces
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Comprehensive resource describing both fundamentals and practical industry applications of antennas and radio propagation employed in modern wireless communication systems The newly revised and thoroughly updated Third Edition of this classic and popular text, Antennas and Propagation for Wireless Communication Systems addresses fundamentals and practical applications of antennas and radio propagation commonly used in modern wireless communication systems, from the basic electromagnetic principles to the characteristics of the technology employed in the most recent systems deployed, with an outlook of forthcoming developments in the field. Core topics include fundamental electromagnetic principles underlying propagation and antennas, basic concepts of antennas and their application to specific wireless systems, propagation measurement, modelling, and prediction for fixed links, macrocells, microcells, femtocells, picocells, megacells, and narrowband and wideband channel modelling with the effect of the channel on communication system performance. Worked examples and specific assignments for students are presented throughout the text (with a solutions manual available for course tutors), with a dedicated website containing online calculators and additional resources, plus details of simple measurements that students can perform with off-the-shelf equipment, such as their laptops and a Wi-Fi card. This Third Edition of Antennas and Propagation for Wireless Communication Systems has been thoroughly revised and updated, expanding on and adding brand new coverage of sample topics such as: Maxwell’s equations and EM theory, multiple reflections as propagation mechanisms, and waveguiding HAPS (High Altitude Platforms) propagation, design and noise considerations of earth stations, macrocell models, and cellular base station site engineeringFSS (frequency selective surfaces), adaptive antenna theory developments (massive and distributed MIMO in particular), and how to process raw data related to channel measurements for mobile radio systemsThe techniques used in mobile systems spanning the latest 4G, 5G and 6G technology generations A wider range of frequencies, extending from HF, VHF and UHF up to the latest millimetre wave and sub terahertz bandsWith comprehensive coverage of foundational subject matter as well as major recent advancements in the field, Antennas and Propagation for Wireless Communication Systems is an essential resource for undergraduate and postgraduate students, researchers, and industry engineers in related disciplines.