دورات هندسية

 

 

كتب في مجال Communicaion and Telecommunication

صفحة 6 من 11 الأولىالأولى ... 2 3 4 5 67 8 9 10 ... الأخيرةالأخيرة
النتائج 51 إلى 60 من 101
  1. [51]
    فلسطين والنضال
    فلسطين والنضال غير متواجد حالياً
    عضو شرف
    الصورة الرمزية فلسطين والنضال


    تاريخ التسجيل: Apr 2008
    المشاركات: 895

    وسام الشكر

     وسام كبار الشخصيات

    Thumbs Up
    Received: 0
    Given: 0

    Wai M Tam, Francis C. M. Lau, Chi K Tse ” Digital Communications with Chaos: Multiple Access Techniques and Performance “
    Publisher: Elsevier Science | Number Of Pages: 256 | 7.32 MB | PDF | 2006-12-13 | ISBN: 0080451519
    Since the 1970’s, there has been a great deal of research effort spent on studying chaotic systems and the properties of the chaotic signals generated. Characterized by their wideband, impulse-like autocorrelation and low cross-correlation properties, chaotic signals are useful spread-spectrum signals for carrying digital information. Spectrum spreading has become one of the most popular modulation techniques for high-speed wireless communications. It makes use of signals of very wide bandwidth to carry information at relatively low data rates, and possesses advantages such as low probability of interception, resistance to jamming, multiple-access capability and mitigation to multipath effect, which are particularly important in a wireless scenario. In addition to enjoying the aforementioned benefits, chaotic signals can be generated using simple circuitries, thus lowering the cost of transceivers.

    Early study of chaos-based communication systems was focused on a single-user case. In the past few years, more effort has been put on investigating systems with multiple-access capability, which is a key feature of spread-spectrum communication systems. This book presents a detailed study of some multiple-access schemes used for chaos-based communications, and evaluates their performance. In addition, the effectiveness of the multiuser detection techniques, whose primary objective is to reduce interference between users and hence improve performance, is evaluated in the context of multiple-access digital communication systems.
    * Hot research topic
    * Describes communication technologies for the future
    * Authors among the pioneers researching in chaos-based communications

    Depositfiles

    0 Not allowed!




    سوف نقتلهم جميعا وسوف نشرب دمائهم في كاس انتفاضتنا وليكن نخبه الموت لنا ولهم ولتحيا فلسطين

  2. [52]
    فلسطين والنضال
    فلسطين والنضال غير متواجد حالياً
    عضو شرف
    الصورة الرمزية فلسطين والنضال


    تاريخ التسجيل: Apr 2008
    المشاركات: 895

    وسام الشكر

     وسام كبار الشخصيات

    Thumbs Up
    Received: 0
    Given: 0




    Communication Networks: Fundamentals Concepts and Key Architectures
    Product Description
    This text is designed for introductory courses in communications in either electrical engineering or computer science programs. It can be used by undergraduate or first year graduate level programs. Addressing networks from a top-down approach, this text shows students the big picture of networks in general so that they may see how the various parts of the network fit in to the picture. The book is organized into six sections that progressively consider the networking functions in greater level of detail. The book presents a balanced view of all important elements of networking and is organized so that all relevant topics can be covered at some minimum level of detail.
    Book Info
    Text for introductory courses in communication networks. Addresses networks from a top-down approach and provides numerous examples. DLC: Telecommunication systems. --This text refers to an out of print or unavailable edition of this title.
    Product Details
    * Hardcover: 768 pages
    * Publisher: McGraw-Hill Science/Engineering/Math; 1 edition (May 31, 2001)
    * Language: English
    * ISBN-10: 007250353X
    * ISBN-13: 978-0072503531
    http://rapidshare.com/files/12715034...n_Networks.rar

    0 Not allowed!




    سوف نقتلهم جميعا وسوف نشرب دمائهم في كاس انتفاضتنا وليكن نخبه الموت لنا ولهم ولتحيا فلسطين

  3. [53]
    فلسطين والنضال
    فلسطين والنضال غير متواجد حالياً
    عضو شرف
    الصورة الرمزية فلسطين والنضال


    تاريخ التسجيل: Apr 2008
    المشاركات: 895

    وسام الشكر

     وسام كبار الشخصيات

    Thumbs Up
    Received: 0
    Given: 0

    Review
    This book offers important insights into how space-time coding can be tailored for real-world MIMO channels. The discussion of MIMO propagation models is also intuitive and well developed.
    Professor Arogyaswami J. Paulraj, Stanford University, CA
    Finally a book devoted to MIMO from a new perspective that bridges the boundaries between propagation, channel modeling, signal processing and space-time coding. It is of high reference value, combining intuitive and conceptual explanations with detailed, stringent derivations of basic facts of MIMO.
    Ernst Bonek, Emeritus Professor, Technische Universitat Wien, Austria
    Book Description
    The first book to bring together channel modelling and signal processing, enabling the development of highly effective MIMO Communications channels a key technology for attaining the next generation of 3G and the evolution to 4G.

    http://rapidshare.com/files/124831936/MIMO_Wireless.rar

    0 Not allowed!




    سوف نقتلهم جميعا وسوف نشرب دمائهم في كاس انتفاضتنا وليكن نخبه الموت لنا ولهم ولتحيا فلسطين

  4. [54]
    فلسطين والنضال
    فلسطين والنضال غير متواجد حالياً
    عضو شرف
    الصورة الرمزية فلسطين والنضال


    تاريخ التسجيل: Apr 2008
    المشاركات: 895

    وسام الشكر

     وسام كبار الشخصيات

    Thumbs Up
    Received: 0
    Given: 0


    Multicast Communication Protocols and Applications

    Multicast Communication: Protocols, Programming, and Applications takes a comprehensive approach to the multicast capabilities of Internet Protocol (IP) communications, explaining how best to use IP networks to carry packets from one or more senders to multiple recipients. The book supplements detailed, carefully thought-out explanations of multicast network traffic with conceptual diagrams that help visual learners pick up the material. For the more practically minded, the discussion on implementing multicast over various transport protocols, such as the User Datagram Protocol (UDP), includes snippets of C code that make the procedures understandable.
    This book wins points for its physical design, not only because it's a durable hardback, but also because the pages are well organized: one column contains the body text; the remaining space provides terms, questions, and brief phrases that describe what's adjacent to them in the text. It's almost as if the book were pre-annotated; and there's plenty of white space to make notes, if you're so inclined. The documentation on the Internet's Multicast Backbone (Mbone) is both excellent and interesting, but the discussion on how Mbone traffic is limited to subnets, domains, countries, and geographic regions, or not limited at all, is really informative. --David Wall
    Topics covered: Multicast schemes, explained for system administrators and software developers; multicast routing (including DVMRP, multicast OSPF, and PIM); how to guarantee Quality of Service (QoS) for conferencing and other media that have high bandwidth requirements; implementation of multicasting across several transport protocols (including UDP, XTP, and MTP); and the functioning of the Mbone and its most popular applications.
    Review
    "This is highly recommended reading for anyone who has been looking for a technically precise, yet easy to understand book on Multicast communication"
    -Dr. Wolfgang Effelsberg, University of Mannheim, Germany
    The book is structured as follows: Chapter 2 introduces the fundamentals of group communication and discusses the principal problems associated with the implementation of computer-supported group communication. The subsequent chapters are each devoted to one specific area and present alternative technical solutions. Chapters 3 and 4 deal with Internet protocols that are already in use now or that represent new developments. The topics covered focus on multicast routing as well as on quality-of-service support for multimedia applications based on group communication. Chapter 5 begins by introducing the background of ATM networks and then looks at multicast support for ATM networks with particular emphasis on signaling at the user-network interface. Protocols for the support of multicast communication on the transport layer are the subject of Chapter 6. This chapter presents various protocols with different multicast services, some of which are currently being used on the Internet. The structure of the MBone, the multicast backbone of the Internet, is discussed in Chapter 7. Some applications that use the MBone are presented, such as systems for videoconferencing. Finally, Chapter 8 provides a perspective on the issues that still have not been addressed in multicast communication and also looks at active networks, currently
    discussed in conjunction with the Internet, as a technology that could possibly be beneficial to multicast communication.
    http://rapidshare.com/files/77469387/1558606459.rar%20

    0 Not allowed!




    سوف نقتلهم جميعا وسوف نشرب دمائهم في كاس انتفاضتنا وليكن نخبه الموت لنا ولهم ولتحيا فلسطين

  5. [55]
    فلسطين والنضال
    فلسطين والنضال غير متواجد حالياً
    عضو شرف
    الصورة الرمزية فلسطين والنضال


    تاريخ التسجيل: Apr 2008
    المشاركات: 895

    وسام الشكر

     وسام كبار الشخصيات

    Thumbs Up
    Received: 0
    Given: 0

    Tim Schenk ” RF Imperfections in High-rate Wireless Systems: Impact and Digital Compensation”
    Springer | 2008-02-11 | ISBN:1402069022 | 320 pages | PDF | 7,8 Mb
    Wireless communication systems are persistently applying wider bandwidths, larger signal dynamics and higher carrier frequencies to fulfil the demand for higher data rates. This results in an ever increasing demand on the performance of low-cost and power-efficient radio frequency (RF) front-ends. Since the RF technology is, consequently, pushed to its operation boundaries, the intrinsic imperfections of the RF IC technology are more and more governing the system performance of wireless modems.
    RF Imperfections in High-rate Wireless Systems therefore presents a new vision on the design of wireless communication systems. In this approach the imperfections of the RF front-ends are accepted and digital signal processing algorithms are designed to suppress their impact on system performance.
    To illustrate this approach, the book focuses on multiple-antenna orthogonal frequency division multiplexing (MIMO OFDM), which will be applied as basis for the majority of near-future high-rate wireless systems. The basics of MIMO OFDM are introduced and the typically required signal processing in the implementation of such systems is elucidated. The book treats several of the front-end impairments that seriously affect the performance of MIMO OFDM systems: carrier frequency offset, phase noise, IQ imbalance and nonlinearities. To provide an in-depth understanding of the impact of these RF imperfections, analytical performance results are presented in the book. These results are then used to design different compensation approaches based on digital baseband processing.
    RF Imperfections in High-rate Wireless Systems is of interest to wireless system designers, who want to familiarise with the digital compensation of RF imperfections. For researchers in the field of wireless communications this book provides a valuable overview of this emerging research topic.


    depositfiles.com


    easy-share

    0 Not allowed!




    سوف نقتلهم جميعا وسوف نشرب دمائهم في كاس انتفاضتنا وليكن نخبه الموت لنا ولهم ولتحيا فلسطين

  6. [56]
    فلسطين والنضال
    فلسطين والنضال غير متواجد حالياً
    عضو شرف
    الصورة الرمزية فلسطين والنضال


    تاريخ التسجيل: Apr 2008
    المشاركات: 895

    وسام الشكر

     وسام كبار الشخصيات

    Thumbs Up
    Received: 0
    Given: 0
    Motorola Scrambling Code Generation for WCDMA on the StarCore SC140 Core.pdf

    n a Wideband Code Division Multiple Access (WCDMA) environment, each user is assigned a unique complex scrambling sequence to encode its
    information-bearing signal. The receiver has the scrambling code of the user, unscrambles the received signal, and recovers the original data [1]. This application note presents a method for complex pseudo-random sequence (PN code) generation and complex scrambling of an I/Q code multiplexed signal on a StarCore® SC140 digital signal processor (DSP). The PN codes in this application note are generated for a WCDMA Universal Mobile Telecommunications Systems (UMTS) uplink (signal from handset to base station) according to the third-generation partnership project (3GPP) specifications.
    This application note provides practical information to help users understand PN code generation and complex scrambling, which are required in the WCDMA standards. Typically, these operations are performed on Architecture-Specific Integrated Circuits (ASICs), but here we explore the use of the Motorola StarCore SC140 digital signal processing (DSP) core to accomplish the same task.

    *******s:
    • Pseudo-Random
    • Sequences
    • Randomness Properties Generating Pseudo-Random Sequences
    • Scrambling Codes for WCDMA
    • Generating Long Complex Scrambling Codes
    • Scrambling an I-Q/Code Multiplexed Signal
    • Software Implementation on the StarCore SC140 Core
    • Allocating Memory Space
    • Generating Binary PN Code and Forming Complex Scrambling Sequences
    • Forming the Complex Scrambling Sequences
    • Complex Scrambling of an IQ/Code Multiplexed Signal
    • Results
    • References
    Download free Application Note AN2254/D Rev. 0, 4/2002 of Motorola Scrambling Code Generation for WCDMA on the StarCore SC140 Core.pdf (20 pages 0.6 MB).

    0 Not allowed!




    سوف نقتلهم جميعا وسوف نشرب دمائهم في كاس انتفاضتنا وليكن نخبه الموت لنا ولهم ولتحيا فلسطين

  7. [57]
    فلسطين والنضال
    فلسطين والنضال غير متواجد حالياً
    عضو شرف
    الصورة الرمزية فلسطين والنضال


    تاريخ التسجيل: Apr 2008
    المشاركات: 895

    وسام الشكر

     وسام كبار الشخصيات

    Thumbs Up
    Received: 0
    Given: 0



    ISBN-10: 0321427610
    ISBN-13: 978-032142761



    Book Description
    “In this updated and expanded edition of her excellent telecommunications primer, Lili explains in just the right detail everything you need to know to become fluent in this most important and fascinating industry. Besides including a satisfying amount of expert technical detail, the book also discusses equally crucial aspects of how communications technology affects society, culture, and politics. Electronic communications is changing the world for the better; learn from Lili’s expertise how you, too, can participate in the revolution.”
    —Steve Riley, senior security strategist, Microsoft Corporation


    http://rapidshare.com/files/20275389/2007-AW_-_Telecommunications_Essentials--The_Complete_Global_Source__2nd_Ed_.rar

    0 Not allowed!




    سوف نقتلهم جميعا وسوف نشرب دمائهم في كاس انتفاضتنا وليكن نخبه الموت لنا ولهم ولتحيا فلسطين

  8. [58]
    فلسطين والنضال
    فلسطين والنضال غير متواجد حالياً
    عضو شرف
    الصورة الرمزية فلسطين والنضال


    تاريخ التسجيل: Apr 2008
    المشاركات: 895

    وسام الشكر

     وسام كبار الشخصيات

    Thumbs Up
    Received: 0
    Given: 0




    ISBN-10: 1584503297
    ISBN-13: 978-1584503293


    Book Description



    Principles of Digital Communication Systems & Computer Networks is designed as a textbook for digital communication systems, data communication and computer networks, and mobile computing. Part I deals with key topics such as information theory, transmission media, coding, error correction, multiplexing, multiple access, carrier modulation, PSTN, and radio communication. Part II goes on to cover the networking concepts, the ISO/OSI protocol architecture, Ethernet LAN, X.25 protocol, and TCP/IP protocol. Finally, Part III covers mobile computing, including radio paging, cellular mobile, GPS, CTI, unified messaging, and multimedia communication. Helpful summaries, lists of supplementary information, references, and exercises at the end of each chapter make the book a comprehensive resource for anyone pursuing a career in telecommunications and data communication.



    http://rapidshare.de/files/26713962/1584503297.zip

    0 Not allowed!




    سوف نقتلهم جميعا وسوف نشرب دمائهم في كاس انتفاضتنا وليكن نخبه الموت لنا ولهم ولتحيا فلسطين

  9. [59]
    ادور
    ادور غير متواجد حالياً
    عضو متميز جداً
    الصورة الرمزية ادور


    تاريخ التسجيل: Jul 2006
    المشاركات: 1,176
    Thumbs Up
    Received: 0
    Given: 5
    مشكورررررر كتير لك وكل التقدم

    0 Not allowed!



  10. [60]
    فلسطين والنضال
    فلسطين والنضال غير متواجد حالياً
    عضو شرف
    الصورة الرمزية فلسطين والنضال


    تاريخ التسجيل: Apr 2008
    المشاركات: 895

    وسام الشكر

     وسام كبار الشخصيات

    Thumbs Up
    Received: 0
    Given: 0
    شكرا لك واتمنى لك التوفيق

    0 Not allowed!




    سوف نقتلهم جميعا وسوف نشرب دمائهم في كاس انتفاضتنا وليكن نخبه الموت لنا ولهم ولتحيا فلسطين

  
صفحة 6 من 11 الأولىالأولى ... 2 3 4 5 67 8 9 10 ... الأخيرةالأخيرة
الكلمات الدلالية لهذا الموضوع

عرض سحابة الكلمة الدلالية

RSS RSS 2.0 XML MAP HTML