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| 书名： | Essentials of Modern Telecommunications Systems | |
|---|---|---|
| 作者： | Kularatna, Nihal; Dias, Dileeka | |
| 出版时间： | 2004-04-30 | |
| ISBN： | 9781580534918(P-ISBN) ，9781580538848(O-ISBN) | |
| 摘要： | ||
| 摘要： | ||
书目详情：
BookmarksContentsForewordPrefaceAcknowledgments1. The Communication Channel and the Communication Network 11.1 Development of Telecommunications 11.2 Introduction to Telecommunications 41.3 Signals in Communications 51.4 Characteristics of the Communications Channel 101.5 The Communications Network 221.6 The Future 241.7 Enabling Technologies 272. Digital Telephony 292.1 From Analog to Digital 292.2 Advantages of Digital Techniques 312.3 Disadvantages of Digital Techniques 342.4 PCM Techniques and Standards 352.5 Low Bit-Rate Voice Coding 442.6 Voice over the Internet 562.7 Devices for Digital Telephony 733. Switching and Signaling Systems 993.1 Evolution of Switching Systems 993.2 Essentials of Switching, Signaling, and Control 1003.3 Principles of Switching 1013.4 Circuit Switching and Packet Switching 1053.5 Signaling Systems 1073.6 Digital Exchanges 1123.7 Private Branch Exchanges and Key Phone Systems 1193.8 Merging Data and Voice 1213.9 Packet Switching Systems 1213.10 Switch Fabric Interfaces and ICs 1373.11 Optics and the Future 1394. Cellular Systems 1434.1 Introduction 1434.2 Advantages and Constraints of Wireless Access 1434.3 Basic Components of Wireless Access 1444.4 Cellular Systems as an Access Technology 1454.5 Cellular System Operation 1514.6 The Cellular Radio Environment 1554.7 Frequency Assignment and Multiple Access Schemes for Cellular Systems 1634.8 Capacity of Cellular Systems 1684.9 First Generation Cellular Systems and Standards 1694.10 Second Generation Digital Cellular Systems 1724.11 Third Generation Mobile Systems 1824.12 Mobile Device Hardware, Architecture, and Implementation 1884.13 Technological Trends 1925. Fixed Wireless Access 1975.1 Introduction 1975.2 Access Technologies 1985.3 WLL Technologies Primarily for Voice Provision 2005.4 Broadband Fixed Wireless Access Systems 2075.5 Enabling Technologies 2175.6 The Future 2206. Digital Subscriber Loop 2236.1 Introduction 2236.2 Signal Impairments and the Channel Length 2236.3 DSL Techniques 2296.4 Different Versions of DSL 2396.5 Spectral Considerations in DSL 2476.6 Operation of DSL 2506.7 DSL Chip Sets 2546.8 The ISO Seven-Layer Model, ATM, and DSL Systems 2646.9 End-to-End ADSL Systems 2646.10 Standards 2657. Transmission Techniques 2717.1 Introduction 2717.2 Transmission Line Behavior 2717.3 Decibel Measurements 2737.4 Basic TDM Techniques and Digital Transmission Systems 2747.5 Plesiochronous Higher-Order Digital Multiplexing or PDH 2797.6 Synchronous Digital Multiplexing 2817.7 Optical Networks 2877.8 The Future 2908. Telecommunication Systems Testing 2938.1 Introduction 2938.2 Measurement Areas 2938.3 Measurement of Power Levels in Telecommunications Circuits 2948.4 High-Frequency Power Measurements 2968.5 RF Insertion Units for SWR and Reflection Coefficient Measurements 2978.6 Built-In RF Power Measurements 2988.7 Field-Strength Measurements 2998.8 Spectrum Observations and Frequency Measurements 3018.9 DSL Testing and Measurements 3028.10 Testing of Digital Transmission Systems 3068.11 BERTs 3098.12 Broadband Network Measurements 3128.13 Use of Modern Digital Storage Oscilloscopes for Physical Layer Testing or Tributary Signals 3139. Embedded Systems Design for Telecommunications: A Case Study 3179.1 Introduction 3179.2 AMR Speech Codecs and the GSM Environment 3179.3 An Overview of Digital Signal Processor Architectures 3199.4 Overview of Target Hardware for the AMR Speech CodecŠThe AD6526 Multicore Processor 3209.5 Overview of the AMR Speech Codec 3239.6 Algorithmic Complexity of the AMR Speech Codec 3289.7 Implementing the AMR Speech CodecŠTrade-offs and Considerations 3319.8 Porting the Reference AMR Speech Codec C Code to Target Hardware 3329.9 Testing and Packaging of the AMR Speech Codec 3379.10 Final Packaging and Documentation of the AMR Speech Codec 3409.11 Conclusions 340List of AcronymsAbout the Authors 353Index 355
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