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Author : Eric Dohrman
Publisher : Unknown
Page : 180 pages
File Size : 49,8 Mb
Release : 2002
Category : Electronic
ISBN : UCAL:X66012
Author : Savo G. Glisic
Publisher : John Wiley & Sons
Page : 628 pages
File Size : 49,7 Mb
Release : 2003-07-25
Category : Technology & Engineering
ISBN : 9780470859254
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.
Author : Harri Holma,Antti Toskala
Publisher : John Wiley & Sons
Page : 575 pages
File Size : 55,9 Mb
Release : 2007-09-27
Category : Technology & Engineering
ISBN : 0470512520
Written by the leading experts in the field, the best selling book on UMTS is now updated to cover 3GPP High Speed Packet Access (HSPA) evolution (HSPA+) in Release 7 and on-going Long Term Evolution (LTE) activity for Release 8. These technologies enhance the capabilities of the existing WCDMA/HSPA networks to offer higher data rates beyond 100 Mbps. WCDMA for UMTS, Fourth Edition also covers 3GPP WCDMA Release 99, High Speed Downlink Packet Access (HSDPA) in Release 5 and High Speed Uplink Packet Access (HSUPA) in Release 6, which are already deployed commercially. Multimedia Broadcast Multicast System (MBMS) is also described in detail. Key updates include: * Continues to provide both updated descriptions of the 3GPP standard as well as the latest end user and system performance estimates * Updated HSDPA and HSUPA, including link budgets and Iub dimensioning * Detailed MBMS description * 3GPP Release 7 HSPA evolution full description * 3GPP Release 8 LTE overall description and 3GPP schedule * Dedicated chapter on terminal design challenges for the new high speed radio technologies
Author : Tero Ojanperä
Publisher : Artech House
Page : 477 pages
File Size : 43,5 Mb
Release : 2001
Category : Computers
ISBN : 9781580531801
While covering the basics of wideband CDMA, this major revision of the bestseller brings design engineers and technical managers up to date with all the latest developments and technologies in third generation mobile communications. This cutting-edge book gives professionals a complete understanding of the complex standardization environment of 3G networks and the design and development of 3G systems.
Author : Don Torrieri
Publisher : Springer Nature
Page : 715 pages
File Size : 54,7 Mb
Release : 2022-04-12
Category : Technology & Engineering
ISBN : 9783030753436
This textbook, now in its 5th edition, provides updated state-of-the-art coverage of spread-spectrum communication systems with new applications throughout the book. In this edition, the author extends sections with more comprehensive details about many topics. Some of the more complex sections have been rewritten to make them easier to understand. New subsections, sections, figures, and problems have been added throughout the book. New or expanded topics include frequency-hopping systems with multisymbol CPFSK detection, derivations of spread-spectrum systems with differential data modulations, chaotic systems, channel-state information, and MIMO. As with previous edition, the author presents mathematical analyses of spread-spectrum systems that provide insights into their operations and limitations and are of theoretical and practical interest to both researchers and system designers. He includes updated problems at the end of each chapter, which are intended to assist readers in consolidating their knowledge and to give practice in analytical techniques. Eight appendices provide the mathematical tools that are useful in understanding the main text.
Author : J. S. Blogh,Lajos L. Hanzo
Publisher : John Wiley & Sons
Page : 446 pages
File Size : 40,7 Mb
Release : 2002-04-29
Category : Computers
ISBN : 0470845198
Of Non-Wraparound Network Performance -- Wrap-around Network Performance Results -- Performance Results over a LOS Channel -- Performance Results over a Multipath Channel -- Performance over a Multipath Channel using Power Control -- Performance of an AQAM based Network using Power Control -- UTRA, Adaptive Arrays and Adaptive Modulation -- Direct Sequence Code Division Multiple Access -- UMTS Terrestrial Radio Access -- Spreading and Modulation -- Common Pilot Channel -- Power Control -- Uplink Power Control -- Downlink Power Control -- Soft Handover -- Signal-to-Interference plus Noise Ratio Calculations -- Downlink -- Uplink -- Multi-User Detection -- Simulation Results -- Simulation Parameters -- The Effect of Pilot Power on Soft Handover Results -- Fixed Received Pilot Power Thresholds without Shadowing -- Fixed Received Pilot Power Thresholds with 0.5 Hz Shadowing -- Fixed Received Pilot Power Thresholds with 1.0 Hz Shadowing -- Relative Received Pilot Power Thresholds without Shadowing -- Relative Received Pilot Power Thresholds with 0.5 Hz Shadowing -- Relative Received Pilot Power Thresholds with 1.0 Hz Shadowing -- E[subscript c]/I[subscript o] Power Based Soft Handover Results -- Fixed E[subscript c]/I[subscript o] Thresholds without Shadowing -- Fixed E[subscript c]/I[subscript o] Thresholds with 0.5 Hz Shadowing -- Fixed E[subscript c]/I[subscript o] Thresholds with 1.0 Hz Shadowing -- Relative E[subscript c]/I[subscript o] Thresholds without Shadowing.
Author : Peter Stavroulakis
Publisher : Springer Science & Business Media
Page : 676 pages
File Size : 48,6 Mb
Release : 2001-03-12
Category : Computers
ISBN : 9783540678502
One hundred years ago, the notion of transmitting information without the use of wires must have seemed like magic. In 1896, the first patent for wireless communication was granted to Marchese Guglielmo Marconi. Since then the field of wireless communications which includes cellular systems has taken various forms of development. It basically evolved through three Eras. The Pioneer Era over the period of 1860-1921, the Precellular Era over 1921-1980 and the Cellular Era after 1980 and beyond. The first generation cellular era started with the Analog Systems and evolved in the digital domain utilizing Time Division Multiple Access (TDMA) and Code Division Multiple Access (CDMA), thus comprising the Second Generation Mobile Systems. The first generation RF cellular communications systems deployed in the early to mid 1980's had air interfaces comprised of analog technology. Among them were AMPS (Advanced Mobile Phone System), NMT (Nordic Mobile Telephone), and TACS (Total Access Communications System). These were designed for use in a specific geographic area and not intended to be deployed in other areas. There was not much commonality beyond using the same air interface technology and same modulation. The air interface technology was Frequency Division Multiple Access (FDMA) and the modulation was analog FM, but with different deviations and channel spacings. The frequency bands, air interface protocols, number of channels, and data rates were different. In general, these systems provided local and national coverage.
Author : Hsiao-Hwa Chen,Mohsen Guizani
Publisher : John Wiley & Sons
Page : 512 pages
File Size : 54,5 Mb
Release : 2006-05-01
Category : Technology & Engineering
ISBN : 9780470024355
Next Generation Wireless Systems and Networks offers an expert view of cutting edge Beyond 3rd Generation (B3G) wireless applications. This self-contained reference combines the basics of wireless communications, such as 3G wireless standards, spread spectrum and CDMA systems, with a more advanced level research-oriented approach to B3G communications, eliminating the need to refer to other material. This book will provide readers with the most up-to-date technological developments in wireless communication systems/networks and introduces the major 3G standards, such as W-CDMA, CDMA2000 and TD-SCDMA. It also includes a focus on cognitive radio technology and 3GPP E-UTRA technology; areas which have not been well covered elsewhere. Covers many hot topics in the area of next generation wireless from the authors’ own research, including: Bluetooth, all-IP wireless networking, power-efficient and bandwidth-efficient air-link technologies, and multi-user signal processing in B3G wireless Clear, step-by-step progression throughout the book will provide the reader with a thorough grounding in the basic topics before moving on to more advanced material Addresses various important topics on wireless communication systems and networks that have emerged only very recently, such as Super-3G technology, 4G wireless, UWB, OFDMA and MIMO Includes a wealth of explanatory tables and illustrations This essential reference will prove invaluable to senior undergraduate and postgraduate students, academics and researchers. It will also be of interest to telecommunications engineers wishing to further their knowledge in this field.
Author : Khaled Fazel,S. Kaiser
Publisher : Springer Science & Business Media
Page : 376 pages
File Size : 47,6 Mb
Release : 2013-03-09
Category : Technology & Engineering
ISBN : 9781475735697
Multi-Carrier Spread-Spectrum has been deeply studied and new alternative solutions have been proposed. This book edits the newest contributions and research results in this new field presented at the Third International Workshop on MC-SS & Related Topics, held in Oberpfaffenhofen, Germany.
Author : Lajos Hanzo,Jonathan Blogh,Song Ni
Publisher : John Wiley & Sons
Page : 596 pages
File Size : 45,5 Mb
Release : 2008-04-30
Category : Technology & Engineering
ISBN : 9780470754283
3G, HSPA and FDD versus TDD Networking, Second Edition is the only book that contrasts the network capacity gains that may be achieved with the advent of adaptive antenna arrays and HSDPA-style adaptive modulation techniques in the context of FDD and TDD CDMA cellular networks. In the five years since the first edition of this book was published the wireless landscape has evolved further. The new book addresses the recent developments in the field of HSDPA-style wireless networking, focusing particularly on the issues and challenges of FDD versus TDD networking. These solutions are particularly powerful in shadow-faded scenarios, when the antenna array elements experience correlated, rather than independent fading. Furthermore, the flexible up-link/down-link time-slot allocation of TDD is beneficial for supporting the Wireless Internet, but results in erratic interference fluctuations, which is efficiently combated by the antenna arrays and adaptive modulation. Additionally, whilst the adaptive modulation aided system simply drops the instantaneous transmission rate during instances of high interference, conventional networks would drop the call. Builds on successful previous edition to include recent developments in the field of HSDPA-style wireless networking Provides an all-encompassing self-contained overview of the subject for a wide range of readers of all levels. Treats the topics of both physical-layer and network-layer aspects of wireless systems using a cross-layer optimization approach. One of the first books to contrast in detail both FDD and TDD networking. The material is presented clearly and logically allowing the uninitiated reader to commence reading it at fundamental non-mathematical conceptual level at the beginning of the book, while advanced readers can turn directly to the required chapter describing solutions to a number of wireless FDD or TDD networking problems. This book will inspire researchers, practicing engineers, operators, marketing engineers and advanced postgraduates.
Author : S. Boztaş
Publisher : Unknown
Page : 6 pages
File Size : 49,8 Mb
Release : 1999
Category : Code division multiple access
ISBN : 0864447930
Author : Anonim
Publisher : Unknown
Page : 608 pages
File Size : 48,6 Mb
Release : 2000
Category : Mobile communication systems
ISBN : UIUC:30112050705059
Author : Anonim
Publisher : Unknown
Page : 616 pages
File Size : 44,8 Mb
Release : 2000
Category : Mobile communication systems
ISBN : UOM:39015048232907
Author : Anonim
Publisher : Unknown
Page : 448 pages
File Size : 45,8 Mb
Release : 1998
Category : Electronics
ISBN : UOM:39015058315618
Author : John G. Proakis
Publisher : Wiley-Interscience
Page : 656 pages
File Size : 43,6 Mb
Release : 2003-01-06
Category : Reference
ISBN : UOM:39015058733703
Engineers have long required a comprehensive yet concise resource to turn to for reliable, up-to-date information on the continually evolving field of telecommunications. In five easily searched volumes, the Wiley Encyclopedia of Telecommunications provides a broad, clear overview of both the fundamentals of and recent advances in telecommunications. This essential reference-the only one dedicated to telecommunications for electrical engineers-is available in print and online formats. Topics Include: Optical communications Modulation and demodulation Coding and decoding Communication networks Antennas John G. Proakis is the Series Editor for the Wiley Series in Telecommunications and Signal Processing. In preparing this Encyclopedia, Dr. Proakis been assisted by an editorial board of five leading telecommunications engineers from academia and industry to bring you: Approximately 300 articles on various topics in telecommunications Articles are written by experts in their fields A broad, clear overview of both the fundamentals and recent advances in telecommunications Cutting edge topics covering the entire field of telecommunications and signal processing For more information regarding the online edition of this major reference work, please visit: www.mrw.interscience.wiley.com/eot