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John Wiley Sons Websters New World Essential Vocabulary

分章节,英语词汇学习的好书。 David Alan Herzog 0 Reviews Webster's New World, 2004 - Language Arts & Disciplines - 408 pages EXPAND YOUR VOCABULARY--FOR BETTER TEST SCORES AND BETTER COMMUNICATIONYou probably can't learn all the hundreds of thousands of words in the English language--but you can learn those difficult words you're most likely to need to know. If you want to increase your vocabulary for standardized tests or just better communication, Webster's New World Essential Vocabulary is the only tool you need. It presents essential words with definitions, example sentences, synonyms, and tense forms.In addition to the most frequently tested terms from the SAT and GRE tests, Webster's New World Essential Vocabulary also includes helpful appendices on foreign phrases, prefixes, and suffixes. Together, these 1,500 words and definitions not only prepare you for tough tests, but also dramatically improve your communication skills for the business world or studying English as a second language. Whether you're worried about college entrance exams or just want to be better with words, this practical, helpful resource gives you the tools you need to read, speak, and write more persuasively, and communicate more effectively. Plus, Handy self-tests let you gauge your understanding of words and meaning, so you can measure your progress as you go!

2010-07-09

Resumes.For.Communications.Careers

如何写好英文简历? 本电子书提供了很多很好的范例,尤其适合计算机,通信,电子,自动化等相关专业的同学参考! 老外编写的,英语绝对地道,McGraw-Hill出版。这是本书的第三版,发行超过2百万本的好书,特别推荐: Editors of VGM Career Books 0 Reviews McGraw-Hill Professional, 2003 - 144 pages Strong, impressive resumes that lead to the right job! This series helps job seekers write resumes that hit the target every time. Each book offers essential advice plus nearly 100 sample resumes and 20 cover letters tailored to a job seeker's needs or field of interest. Includes a variety of resume formats, tips on highlighting strengths and using active vocabulary, and helpful work sheets for gathering personal information.

2010-07-09

UWB theory and applications

研究UWB(超宽带无线通信)的基础专著 UWB theory and applications Front Cover Ian Oppermann, Matti Hämäläinen, Jari Iinatti 0 Reviews John Wiley and Sons, 2004 - Technology & Engineering - 223 pages UWB: Theory and Application covers the radio technology (RT) based on the transmission of very short time-domain pulses of the order of 100’s of pico-seconds. The generation and receiver techniques render UWB technology ideally suited to very low cost, very low power implementations for short-range communications. The short time domain pulses also permit the use of UWB signals in positioning and tracking applications. The book will focus on practical implementation issues including * li>An overview of signal generation techniques and corresponding circuits A review of fabrication technologies * Antenna design issues and practical examples of antennas and their performance * The implementation limits will be highlighted for application areas The book is aimed at the specialist researcher interested in practical issues of UWB technology and realistic assumptions of UWB, as well as the engineer interested in implementing UWB devices

2010-07-08

HSDPA/HSUPA for UMTS: high speed radio access for mobile communications

学习HSPA的经典教材,诺基亚的大牛编写 Harri Holma, Antti Toskala 1 Review John Wiley, 2006 - 245 pages From the editors of the highly successful WCDMA for UMTS, this new book provides a comprehensive and up-to-date reference to High Speed Packet Access (HSPA) technologies for WCDMA. The editors cover both HSDPA and HSUPA, including an in-depth description and explanation of 3GPP standards, and expected performance based on simulations and first measurements. The text also discusses the impact of HSDPA and HSUPA on network dimensioning, covers applications and end-to-end performance in detail, and includes a section on radio frequency requirements and terminal design considerations. The most comprehensive and advanced guide to the HSDPA (High Speed Downlink Packet Access) and HSUPA (High Speed Uplink Packet Access) technologies and standardisation, HSDPA/HSUPA for UMTS: * Analyses the impact of HSDPA/HSUPA on network dimensioning, discussing co-existence with R99 (Release 99) and GPRS/EDGE (General Packet Radio Services/ Enhanced Data GSM Environment) * Contains a section on applications and end-to-end (e2e) performance * Includes a chapter on radio frequency (RF) requirements and terminal design considerations, covering different RF bands, multi-band HSDPA and multi-mode HSDPA+EDGE challenges, power consumption * Provides numerous illustrations of 3GPP (Third Generation Partnership Project) standards and performance This title provides excellent coverage of the area for system, element and chip designers, network planners, technical mangers with vendors, operators and application developers. It is also ideal for postgraduates and researchers in related areas.

2010-07-08

Cooperative Communications

作者Kramer,做协同通信,信息论的大牛。做这方面的牛牛们下载吧 Cooperative Communications reviews progress in cooperative communication networks. It assembles a representative sample of recent results to serve as a roadmap for the area. The emphasis is on wireless networks, but many of the results apply to cooperation in wireline networks and mixed wireless/wireline networks. Cooperative Communications is intended as a tutorial for the reader who is familiar with information theory concepts but has not actively followed the field. For the active researcher, it serves as an invaluable digest of significant results. It is designed to encourage readers to find new ways to apply the fundamental ideas of network cooperation. It is also intended to make the area sufficiently accessible to practicing network designers.

2010-07-08

Evolved packet system (EPS): the LTE and SAE evolution of 3G UMTS

SAE 经典书 Pierre Lescuyer, Thierry Lucidarme 1 Review John Wiley and Sons, 2008 - Technology & Engineering - 338 pages 2G/GSM and 3G/UMTS are key mobile communication technologies, chosen by more than 2 billion people around the world. In order to adapt to new services, increasing demand for user bandwidth, quality of service and requirements for network convergence, major evolutions are introduced in 3G network standard. Evolved Packet System (EPS) presents the EPS evolution of the 3G/UMTS standard introduced by the 3rd Generation Partnership Project (3GPP) standard committee. This new topic is looked at from a system perspective, from the radio interface to network and service architecture. Hundreds of documents being issued by Standard organisations are summarised in one book to allow the reader to get an accessible comprehensive view of EPS evolution. * Proposes a system view of Evolved UMTS, from the radio to Core and service architecture * Gives a comprehensive and global view of the system that technical specifications do not provide * Describes the new system as well as the inheritance and migration from 2G/GSM and 3G/UMTS * Written by experts in the field who specialise in two complementary but very different technical domains (i.e. "radio interface" and "network architecture") * Contains many figures and examples for better understanding. This book is essential for industry professionals in the telecommunication business, telecommunication system architects and designers, product manufacturers and operators and postgraduate students.

2010-07-08

Microsoft Windows Command-Line Administrator's Pocket Consultant

Microsoft Windows Command-Line Administrator's Pocket Consultant by William R. Stanek ISBN:0735620385 Microsoft Press © 2004 (392 pages) This guide offers step-by-step instructions for a many time-saving techniques using the Windows command line, covering such topics as running commands, using event-logging tools, maintaining network printers, and configuring TCP/IP networking services. Table of Contents Microsoft Windows Command-Line Administrator’s Pocket Consultant Acknowledgments Introduction Part I - Windows Command Line Fundamentals Chapter 1 - Overview of the Windows Command Line Chapter 2 - Getting the Most from the Command Line Chapter 3 - Command Line Scripting Essentials Chapter 4 - Scheduling Tasks to Run Automatically Part II - Windows Systems Administration Chapter 5 - Managing Windows Systems Chapter 6 - Event Logging, Tracking, and Automated Monitoring Chapter 7 - Monitoring Processes and Performance Part III - Windows File System and Disk Administration Chapter 8 - Configuring and Maintaining Hard Disk Drives Chapter 9 - Partitioning Basic Disks Chapter 10 - Managing Volumes and RAID on Dynamic Disks Part IV - Windows Active Directory and Network Administration Chapter 11 - Core Active Directory Services Administration Chapter 12 - Managing Computer Accounts and Domain Controllers Chapter 13 - Managing Active Directory Users and Groups Chapter 14 - Administering Network Printers and Print Services Chapter 15 - Configuring, Maintaining, and Troubleshooting TCP/IP Networking Appendix - Essential Command-Line Tools Reference Index List of Figures List of Tables List of Listings

2010-07-08

GSM网络与GPRS

书名:GSM网络与GPRS 图书编号:1085235 出版社:电子工业出版社 定价:35.0 ISBN:750536954 作者:拉格朗日 出版日期:2002-01-01 版次:1 开本:16开 简介: 目录: 第1章 概论 1.1 无线移动系统及“蜂窝”概念 1.1.1 移动台和无线基站 1.1.2 无线界面 1.1.3 漫游与切换 1.1.4 蜂窝系统和“无绳”系统 1.1.5 蜂窝系统的发展 1.2 PLMN或移动专用网 1.3 GSM的标准化 1.3.1 GSM规范的沿革 1.3.2 ETSI组织 1.4 世界GSM规范 1.5 GSM的主要特征 1.5.1 网络的制定 1.5.2 制定无线界面 1.5.3 GSM 900和DCS 1800 1.5.4 一个完整的系统 第2章 业务 2.1 PLMN的定义 2.2 GSM网的手机 2.3 业务等级 2.4 承载业务 2.4.1 引言 2.4.2 业务表 2.4.3 移动终端上的通道界面 2.5 远程业务 2.5.1 电话 2.5.2 短消息 2.5.3 传真 2.6 附加业务 2.7 GSM的主要安全功能 2.8 商品化 2.8.1 商业服务公司(SCS) 2.8.2 费率表 第3章 结构 3.1 综述 3.2 符合规范的网络结构 3.3 无线子系统的设备构成 3.3.1 BTS的功能 3.3.2 BSC的功能 3.4 网络子系统的设备设置 3.4.1 HLR的功能 3.4.2 MSC和VLR的功能 3.5 运行维护子系统 3.5.1 网络管理 3.5.2 网管TMN的结构 3.5.3 设备识别寄存器EIR的功能 3.5.4 鉴权中心AUC的功能 3.5.5 OMC和NMC 3.6 接口介绍 3.7 无线系统的层结构 3.8 固定子系统的分层结构 3.9 移动台 第4章 固定网和信令 4.1 对RTC的认识 4.1.1 分局网络与传输网 4.1.2 呼叫简化流程 4.1.3 国际电话网 4.2 信令与信令网 4.2.1 信令网的单元 4.2.2 功能模式 4.2.3 信令网的寻址 4.2.4 法国7号信令网(SS7)的结构 4.3 SS7在电话中的应用 4.3.1 消息传输子系统MTP 4.3.2 应用子系统 4.4 未联向已建电路的7号信令SS7 4.4.1 信令联接控制子系统SCCP 4.4.2 事务处理能力应用子系统TCAP 4.5 PLMN的NSS功能结构 4.5.1 PLMN/RTC间的互联 4.5.2 MAP协议的一般介绍 4.6 小结 第5章 漫游、安全和呼叫管理 5.1 引入编码技术 5.1.1 IMSI国际移动用户身份 5.1.2 TMSI临时移动用户身份 5.1.3 MSISDN移动用户国际号码 5.1.4 MSRN移动台漫游号码 5.1.5 在GSM中使用不同的用户身份的实例 5.1.6 IMEI国际移动设备身份 5.2 用户鉴权和编码 5.2.1 用户身份的保密性 5.2.2 用户鉴权和编码的主要原则 5.2.3 用户鉴权 5.2.4 无线信道上发送数据的保密 5.2.5 网络中的安全数据管理 5.2.6 其他安全机制 5.3 漫游的管理 5.3.1 一般介绍 5.3.2 GSM 漫游的管理 5.3.3 漫游的结论 5.4 呼叫管理 5.4.1 参与呼叫控制的主要部分 5.4.2 呼出(主叫) 5.4.3 通信结束 5.4.4 呼入(被叫) 5.4.5 国际电话的特殊情况 5.4.6 发送双音多频DTMF 5.5 附加业务管理 5.5.1 一般原则 5.5.2 双重呼叫 5.5.3 呼叫返回 5.5.4 其他附加服务 5.6 小结 第6章 工程及蜂窝制概念 6.1 移动无线链路的一般方框图 6.1.1 简述 6.1.2 接收机灵敏度 6.1.3 馈线电缆和合路器引入的衰减 6.2 天线的基本参数 6.2.1 发射天线 6.2.2 接收天线 6.2.3 自由空间传播 6.3 传播模型 6.3.1 三阶模型 6.3.2 宏蜂窝模型 6.3.3 微蜂窝模型 6.3.4 建筑物内部的电波传播 6.3.5 传播规则分析 6.4 覆盖预测和链路平衡 6.4.1 电场和功率间关系的回顾 6.4.2 覆盖门限的确定 6.4.3 链路平衡 6.4.4 链路平衡表 6.4.5 分集技术的应用 6.5 资源复用 6.5.1 传统的六边形小区模型 6.5.2 典型模型的研究 6.5.3 小区规划的实际情况 6.6 影响容量的因素 6.6.1 跳频 6.6.2 功率控制 6.6.3 间断发送 6.7 结论 第7章 无线传播 7.1 无线资源的分配和多通道 7.1.1 频分多址FDMA 7.1.2 时分多址TDMA 7.1.3 跳频 7.1.4 多路复用技术的比较 7.2 双工 7.2.1 频段隔离 7.2.2 双工物理信道 7.2.3 载频编号 7.2.4 路径时延的补偿 7.2.5 名词“通道”的不同含义 7.3 信号流程 7.3.1 语音 7.3.2 打包的话音传输 7.3.3 信号和数据服务 7.3.4 在发送链路中所考虑的数据单元 7.4 话音编码 7.4.1 一般原理 7.4.2 话音全速率编码器 7.4.3 其他编码 7.4.4 数码话音信号的保护(全速率) 7.5 误差控制 7.5.1 CRC纠错 7.5.2 卷积编码 7.5.3 GSM中所采用的编码 7.5.4 Viterbi纠错译码 7.6 交互 7.6.1 一般原理 7.6.2 全速率的话音交互 7.6.3 对于数据和信令的交互 7.7 包的格式 7.7.1 序列 7.7.2 优先权标记 7.7.3 编码 7.8 调制 7.8.1 数码调制上的呼叫 7.8.2 GMSK调制 7.8.3 解调和均衡 7.9 特性 7.9.1 基本参数 7.9.2 C/I值的分布(色散) 7.9.3 相关参数 7.9.4 接收机特性要求 7.10 结论 第8章 无线界面:逻辑信道 8.1 无线界面之结构 8.1.1 构成电路的界面 8.1.2 无线界面和分层模型 8.2 逻辑控制通道 8.2.1 逻辑信道上的物理信道 8.2.2 从多帧结构至超级帧结构的时域结构 8.2.3 逻辑信道的分类 8.3 专用信道 8.3.1 列举与用途 8.3.2 TCHSACCH多路复用 8.3.3 FACCH信道的建立 8.3.4 SDCCHSACCH多路复用 8.4 信标频道 8.4.1 信标频道的概念 8.4.2 频率校正信道FCCH 8.4.3 同步信道SCH 8.4.4 广播控制信道BCCH 8.5 公共控制信道 8.5.1 随机信道接入RACH 8.5.2 准予接续信道AGCH 8.5.3 寻呼信道PCH 8.5.4 小区广播信道CBCH 8.5.5 公共控制信道CCCH多路复用的形式 8.6 观测 8.6.1 TDMA帧内的观测 8.6.2 在26和51多帧结构上观测 8.7 逻辑信道:综合 第9章 网络接入协议框架 9.1 数码化接入电话网RNIS 9.1.1 概述 9.1.2 数据链路层 9.1.3 网络层 9.2 GSM协议集介绍 9.3 移动台的层结构 9.3.1 无线界面上的数据链路层 9.3.2 无线界面的第3层 9.4 Abis接口 9.4.1 物理层 9.4.2 数据链路层 9.4.3 网络层 9.5 用于信令的A接口描述 9.5.1 BSSMAP协议 9.5.2 DTAP协议 9.5.3 BSSMAPDTAP的鉴别 9.6 话音码变换 9.7 综合 第10章 无线资源的管理过程 10.1 移动台的守候状态 10.1.1 小区选择过程 10.1.2 小区锁定 10.1.3 小区重选过程 10.1.4 选择/重选标准(准则)的说明 10.2 无线链路的物理管理 10.2.1 功率控制 10.2.2 断续发射DTX 10.3 专用信道的管理 10.3.1 专用信道的调拨 10.3.2 专用信道的释放 10.3.3 编码的启动 10.3.4 从信令信道到话务信道的转化 10.4 切换 10.4.1 定义 10.4.2 切换的执行 10.4.3 MSC申请的切换 10.5 结论 第11章 数据服务的成果 11.1 电路型数据传输 11.1.1 基本知识 11.1.2 数据呼叫的建立 11.1.3 在固定网中的数据发送 11.1.4 透明模式的速率适配 11.1.5 非透明模型 11.1.6 RLP协议 11.1.7 数据服务的发展 11.2 短消息服务 11.2.1 实施单元 11.2.2 层结构 11.2.3 发送过程 11.2.4 无线界面的发送 第12章 SIM卡 12.1 一般性能 12.1.1 幅面 12.1.2 安全特性 12.2 卡的寿命周期 12.2.1 SIM卡的分配 12.2.2 SIM卡的个性化 12.2.3 SIM卡的后个性化 12.3 内部结构 12.3.1 SIM卡数据的一般构成 12.3.2 SIM卡的数据结构 12.3.3 在SIM卡中存储的信息表 12.4 界面 12.4.1 电接口 12.4.2 交流协议 12.4.3 命令集 12.4.4 会话举例 12.5 预激活的SIM卡 12.5.1 预激活命令交换的一般原则 12.5.2 向SIM卡转移短消息 12.5.3 用卡发送预激活命令 12.6 结论 第13章 GSM网络的扩容 13.1 基本容量的增长 13.1.1 分式复用制 13.1.2 跳频 13.2 蜂窝小区的密度 13.2.1 小区分裂 13.2.2 微蜂窝的开发和多层网络 13.3 多频段网络 13.4 自适应天线 13.5 结论 第14章 GPRS 14.1 引言 14.2 主要服务 14.2.1 服务类型 14.2.2 服务质量 14.2.3 提高速率的技术 14.3 一般结构 14.3.1 实体与接口 14.3.2 数据发送的一般原理 14.3.3 层结构 14.4 漫游管理 14.4.1 移动台状态 14.4.2 临时身份 14.4.3 联网 14.4.4 断开GPRS 14.5 会议管理 14.5.1 PDP格式的基本知识 14.5.2 移动台对PDP格式的激活 14.5.3 网络对PDP格式的激活 14.5.4 PDP格式的去激活 14.5.5 带激活格式的漫游区变化 14.6 用户数据的交换 14.6.1 打包层 14.6.2 SNDCP层 14.6.3 LLC层 14.6.4 向GPRS用户发送 14.6.5 通过GPRS用户的发送 14.7 无线界面上发送的一般形式 14.7.1 物理信道 14.7.2 数据编码 14.7.3 包逻辑信道 14.8 RCL和MAC层 14.8.1 数据流概念 14.8.2 实体RLC的功能 14.8.3 已建立的数据流的接入规则 14.8.4 上行数据流的建立 14.8.5 下行数据流的建立 14.8.6 信道释放 14.8.7 物理参数的管理 14.9 多时隙终端 14.10 结论 第15章 EDGE原理 15.1 物理层的变化 15.1.1 调制方式 15.1.2 包结构 15.2 高速率电路(ECSD) 15.3 EGPRS的包模型 15.3.1 调制方式和编码的图示说明 15.3.2 链路匹配原理 15.3.3 RLC层的变换 15.3.4 混合协议 15.4 密集EDGE 15.5 EDGE phase 2 15.6 小结 附录1 英汉和法汉缩略语及术语 附录2 GSM建议表 参考文献

2010-05-19

W-CDMA and cdma2000 for 3G Mobile Networks 2002.pdf

W-CDMA and cdma2000 for 3G Mobile Networks WCDMA,CDMA2000入门好书,推荐 CONTENTS Preface xi Acknowledgments xiii Foreword xv Chapter 1 Introduction 1 Early Systems 2 The Cellular System 4 TDMA System 9 IS-54 and IS-136 9 GSM 11 cdmaOne (Based on IS-95-A and IS-95-B) 13 Personal Communications System 15 Third-Generation (3G) Wireless Technology 16 3G Requirements 18 Evolution to 3G Systems 21 Summary 23 References 25 Chapter 2 Propagation Characteristics of a Mobile Radio Channel 27 Large-Scale Variations 29 Signal Variations in Free Space 29 Variations in Urban Areas Due to Terrain and Clutter 31 Signal Variations in Suburban and Rural Areas 35 Variation of the Local Mean Signal Level 36 Propagation Model 39 Short-term Variations of the Signal 41 Effect of Short-term Variations 45 Coherence Bandwidth and Power Delay Profiles 46 Simulation Model of a Mobile Radio Channel 49 Summary 52 References 52 Chapter 3 Principles of Wideband CDMA (WCDMA) 55 Multiple Access Schemes 56 FDMA 57 TDMA 58 Spread Spectrum Multiple Access 59 Copyright 2002 M.R. Karim and Lucent Technologies. Click Here for Terms of Use. For more information about this book, click here. CDMA Technology 60 Direct-Spread CDMA Principles 60 Capacity of a CDMA System 63 3G Radio Transmitter Functions 67 Speech Encoding 69 Channel Coding 71 Convolutional Encoder 71 Decoding Convolutional Codes 76 Punctured Codes 76 Channel Encoders for UMTS 76 Interleavers 78 Modulation 79 Demodulation of a Phase Modulated Signal 80 Spreading 82 Walsh Codes 82 Scrambling Codes 83 Receiver 90 Receiver Structure 90 Hard and Soft Decision 91 Viterbi Decoding 93 Multipath Diversity in CDMA 94 Rake Receiver 95 Multiuser Detection 98 Smart Antennas 101 Summary 106 Appendix A—Viterbi Decoding of Convolutional Codes 107 Appendix B—Modulation 110 QPSK 110 Offset QPSK (OQPSK) 111 Differential QPSK (DQPSK) 111 Appendix C—Multiuser Detection Using Viterbi Algorithm 113 References 116 Chapter 4 cdmaOne and cdma2000 121 cdmaOne 122 Spectrum Allocation 122 Physical Channels 123 Reverse Channel Transmit Functions 124 Forward Channel Functions 127 vi Contents Power Control 130 Handoff in IS-95 133 cdma2000 137 System Features 137 The Protocol Stack 140 Physical Channels 143 Forward Channel Transmit Functions 146 Reverse Channel Transmit Functions 147 Summary 149 References 151 Chapter 5 The GSM System and General Packet Radio Service (GPRS) 153 GSM System Features 155 System Architecture 157 Speech Encoder 162 Channel Encoder 163 Interleaving 165 Modulation Technique—GMSK 166 Logical Channels 169 GSM Frame and Slot Structure 171 Data Services in GSM 173 General Capabilities and Features of GPRS 174 GPRS Network Architecture 175 GPRS Protocol Stacks 177 Packet Structures 180 Logical Channels 181 Packet Transmission Protocol 182 Summary 186 References 187 Chapter 6 Universal Mobile Telecommunications System (UMTS) 189 System Features 190 Wireless Network Architecture 193 Radio Interface Protocol Stack—An Overview 195 Physical Layer 198 Overview of Physical Layer Functions 199 Transport Channels 203 Physical Channels 206 Packet Mode Data 214 Mapping of Transport Channels to Physical Channels 215 Contents vii Physical Layer Procedures 215 Spreading and Modulation 223 Physical Layer Measurements 230 MAC Layer Protocol 232 Overview 232 MAC Procedures 234 MAC Layer Data Formats 236 Radio Link Control Protocol 237 RLC Functions 237 RLC Protocol Description 240 Packet Data Convergence Protocol (PDCP) 245 Overview 245 Header Compression 246 Broadcast/Multicast (BMC) Protocol 246 Radio Resource Control Protocol 247 RRC Functions 247 Management of RRC Connections 249 Handover 250 Summary 254 References 256 General Systems Descriptions 256 Overview of the UE-UTRAN Protocols 256 Physical Layer 257 Layer 2 and Layer 3 Protocols 257 Protocols at Different Interface Points 257 Miscellaneous Specifications of Interest 258 Other References 259 Web Sites 259 Chapter 7 Evolution of Mobile Communication Networks 261 Review of 3G Requirements [1]-[4] 262 Network Evolution 264 First-Generation Network 264 Second-Generation Networks 266 2G Networks 268 3G Network 270 All-IP Network 271 Summary 273 References 274 viii Contents Chapter 8 Call Controls and Mobility Management 277 Protocol Stacks in Access and Core Networks 279 GSM 279 UMTS 282 Call Controls 291 Summary 295 References 296 Chapter 9 Quality of Service (QoS) in 3G Systems 297 Introduction 298 Overview of the Concepts 300 Classification of Traffic 301 UMTS Service Attributes 304 Requesting QoS—RSVP Protocol 309 Admission Control 315 Admission Control Strategies 315 Resource Allocation 317 Policing 318 Providing Requested QoS 320 Differentiated Services (DiffServ) 323 RSVP for Mobile Systems 325 Summary 329 References 329 Chapter 10 Network Planning and Design 331 Network Design 334 Spectrum Requirements 334 Link Budget Calculation 337 Frequency Planning 343 Analog and TDMA Systems 343 CDMA System 347 Cellular System Growth 347 Cell Splitting 348 Overlay Design 348 Summary 351 Appendix A—Traffic Capacity of a Network 351 References 352 Contents ix Chapter 11 Beyond 3G 355 Driving Force Behind 4G 356 Applications and Features of 4G 358 Technologies 360 Other Considerations 361 References 362 Appendix List of Abbreviations and Acronyms 363 Index 375 x Contents TEAMFLY

2010-04-13

W-CDMA and cdma2000 for 3G Mobile Networks

CONTENTS Preface xi Acknowledgments xiii Foreword xv Chapter 1 Introduction 1 Early Systems 2 The Cellular System 4 TDMA System 9 IS-54 and IS-136 9 GSM 11 cdmaOne (Based on IS-95-A and IS-95-B) 13 Personal Communications System 15 Third-Generation (3G) Wireless Technology 16 3G Requirements 18 Evolution to 3G Systems 21 Summary 23 References 25 Chapter 2 Propagation Characteristics of a Mobile Radio Channel 27 Large-Scale Variations 29 Signal Variations in Free Space 29 Variations in Urban Areas Due to Terrain and Clutter 31 Signal Variations in Suburban and Rural Areas 35 Variation of the Local Mean Signal Level 36 Propagation Model 39 Short-term Variations of the Signal 41 Effect of Short-term Variations 45 Coherence Bandwidth and Power Delay Profiles 46 Simulation Model of a Mobile Radio Channel 49 Summary 52 References 52 Chapter 3 Principles of Wideband CDMA (WCDMA) 55 Multiple Access Schemes 56 FDMA 57 TDMA 58 Spread Spectrum Multiple Access 59 Copyright 2002 M.R. Karim and Lucent Technologies. Click Here for Terms of Use. For more information about this book, click here. CDMA Technology 60 Direct-Spread CDMA Principles 60 Capacity of a CDMA System 63 3G Radio Transmitter Functions 67 Speech Encoding 69 Channel Coding 71 Convolutional Encoder 71 Decoding Convolutional Codes 76 Punctured Codes 76 Channel Encoders for UMTS 76 Interleavers 78 Modulation 79 Demodulation of a Phase Modulated Signal 80 Spreading 82 Walsh Codes 82 Scrambling Codes 83 Receiver 90 Receiver Structure 90 Hard and Soft Decision 91 Viterbi Decoding 93 Multipath Diversity in CDMA 94 Rake Receiver 95 Multiuser Detection 98 Smart Antennas 101 Summary 106 Appendix A—Viterbi Decoding of Convolutional Codes 107 Appendix B—Modulation 110 QPSK 110 Offset QPSK (OQPSK) 111 Differential QPSK (DQPSK) 111 Appendix C—Multiuser Detection Using Viterbi Algorithm 113 References 116 Chapter 4 cdmaOne and cdma2000 121 cdmaOne 122 Spectrum Allocation 122 Physical Channels 123 Reverse Channel Transmit Functions 124 Forward Channel Functions 127 vi Contents Power Control 130 Handoff in IS-95 133 cdma2000 137 System Features 137 The Protocol Stack 140 Physical Channels 143 Forward Channel Transmit Functions 146 Reverse Channel Transmit Functions 147 Summary 149 References 151 Chapter 5 The GSM System and General Packet Radio Service (GPRS) 153 GSM System Features 155 System Architecture 157 Speech Encoder 162 Channel Encoder 163 Interleaving 165 Modulation Technique—GMSK 166 Logical Channels 169 GSM Frame and Slot Structure 171 Data Services in GSM 173 General Capabilities and Features of GPRS 174 GPRS Network Architecture 175 GPRS Protocol Stacks 177 Packet Structures 180 Logical Channels 181 Packet Transmission Protocol 182 Summary 186 References 187 Chapter 6 Universal Mobile Telecommunications System (UMTS) 189 System Features 190 Wireless Network Architecture 193 Radio Interface Protocol Stack—An Overview 195 Physical Layer 198 Overview of Physical Layer Functions 199 Transport Channels 203 Physical Channels 206 Packet Mode Data 214 Mapping of Transport Channels to Physical Channels 215 Contents vii Physical Layer Procedures 215 Spreading and Modulation 223 Physical Layer Measurements 230 MAC Layer Protocol 232 Overview 232 MAC Procedures 234 MAC Layer Data Formats 236 Radio Link Control Protocol 237 RLC Functions 237 RLC Protocol Description 240 Packet Data Convergence Protocol (PDCP) 245 Overview 245 Header Compression 246 Broadcast/Multicast (BMC) Protocol 246 Radio Resource Control Protocol 247 RRC Functions 247 Management of RRC Connections 249 Handover 250 Summary 254 References 256 General Systems Descriptions 256 Overview of the UE-UTRAN Protocols 256 Physical Layer 257 Layer 2 and Layer 3 Protocols 257 Protocols at Different Interface Points 257 Miscellaneous Specifications of Interest 258 Other References 259 Web Sites 259 Chapter 7 Evolution of Mobile Communication Networks 261 Review of 3G Requirements [1]-[4] 262 Network Evolution 264 First-Generation Network 264 Second-Generation Networks 266 2G Networks 268 3G Network 270 All-IP Network 271 Summary 273 References 274 viii Contents Chapter 8 Call Controls and Mobility Management 277 Protocol Stacks in Access and Core Networks 279 GSM 279 UMTS 282 Call Controls 291 Summary 295 References 296 Chapter 9 Quality of Service (QoS) in 3G Systems 297 Introduction 298 Overview of the Concepts 300 Classification of Traffic 301 UMTS Service Attributes 304 Requesting QoS—RSVP Protocol 309 Admission Control 315 Admission Control Strategies 315 Resource Allocation 317 Policing 318 Providing Requested QoS 320 Differentiated Services (DiffServ) 323 RSVP for Mobile Systems 325 Summary 329 References 329 Chapter 10 Network Planning and Design 331 Network Design 334 Spectrum Requirements 334 Link Budget Calculation 337 Frequency Planning 343 Analog and TDMA Systems 343 CDMA System 347 Cellular System Growth 347 Cell Splitting 348 Overlay Design 348 Summary 351 Appendix A—Traffic Capacity of a Network 351 References 352 Contents ix Chapter 11 Beyond 3G 355 Driving Force Behind 4G 356 Applications and Features of 4G 358 Technologies 360 Other Considerations 361 References 362 Appendix List of Abbreviations and Acronyms 363 Index 375 x Contents TEAMFLY

2010-04-12

Interference Management in UMTS Femtocells

Interference Management in UMTS Femtocells by FemtoForum

2010-04-12

A Foundation in Digital Communications

学习数字通信的基础教材 A Foundation in Digital Communications by Amos Lapidoth

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