Articoli correlati a Adaptive WCDMA: Theory and Practice
Sinossi
CDMA (Code Division Multiple Access) is one type of multiple access system used in radio communication. Other multiple access methods include TDMA, FDMA, etc. WCDMA (Wideband Code Division Multiple Access) is the main air interface used for third generation mobile communication systems - UMTS (Universal Mobile Telecommunication System) and is characterised by a wider band than CDMA. WCDMA uses a wider radio band than CDMA, which was used for 2G systems, and has a high transfer rate and increased system capacity and communication quality by statistical multiplexing, etc. WCDMA efficiently utilises the radio spectrum to provide a maximum data rate of 2 Mbit/s. Third generation mobile communication systems are scheduled for operational startup in Japan and Europe in 2001-2002. Applying high-speed data transfer and state-of-the-art radio terminal technology, third generations systems enable multimedia and are currently in the process of being standardised under 3GPP. Among the three types of system to be standardised (i.e. WCDMA, MC-CDMA, UTRA TDD), Japan and Europe will adopt WCDMA in a strategy to take the lead through superior service. This volume will cover the latest theoretical principles of WCDMA and explain why these principles are used in the standards. Starting with a general overview, the more advanced material is then gradually introduced providing an excellent roadmap for the reader. Presents comprehensive coverage of the theoretical and practical aspects of WCDMA Provides a detailed roadmap by presenting the material step-by-step for readers from differing backgrounds Systematically presents the latest results in the field Ideal for Engineers, academics and postgraduate students involved in research and development, engineers involved in management and administration.
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L'autore
Physicians, Biologists, and Allied Health Students.
Dalla quarta di copertina
Adaptive WCDMA covers the latest theoretical principals and practice of wideband code division multiple access (WCDMA), which is the basis for the physical layer of the third generation mobile communications systems. The focus of this volume is on implementation losses characterising the system degradation due to imperfect implementation and in turn how much of the performance promised by theory should be expected in practical solutions based on a given technology, which is not perfect but has finite cost and power consumption. It also provides a significant amount of material related to the further developments and improvements (beyond 3G) especially sections on adaptive WCDMA and modifications for implementations in ad hoc networks.
Based on the author′s experience in research and teaching courses in the field at both university and industry, this volume provides a simultaneous account of the theoretical principles of the technology and how and why these principles are used in the standards.
Written in an accessible and simple to read style the book serves as both an introductory level text and as a more advanced reference. It has a step by step approach which introduces the theory and the standard to those new to the topic yet will meet the expectations of readers from varying backgrounds and levels.
Topics covered include:
∗ Fundamentals: provides an initial explanation about the principles of WCDMA
∗ Power Control: including algorithms and performance analysis with a comprehensive literature review in the field of adaptive systems
∗ Chapters on Code Acquisition and tracking, channel estimation, multi–user detection: provide a comprehensive description of algorithms and tools for their analysis
∗ CDMA Network Design: discusses network capacity and employment issues together with coverage
∗ Adaptive CDMA Networks: covers adaptive algorithms for maximizing throughput in the network
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