Brief introduction: According to the goal of cultivating applied talents and the professional basic knowledge requirements of the national communication professional qualification, this book briefly describes the concept of modern communication network and its basic technology, and comprehensively introduces the basic concepts, technical characteristics, related services, typical systems and main applications of modern communication technologies such as telecommunications switching, data communication, wireless communication, mobile communication, optical communication network, broadband network communication, etc. according to the classification of communication engineering majors and the characteristics of industry development. On the basis of the original arrangement system structure, this book enriches the basic knowledge of modern communication network, integrates the development of information and communication technology (ICT) (including new generation mobile communication systems, access networks, optical communication networks and next generation networks, etc.), and adds relevant content such as the frequency division regulations of the People\'s Republic of China and the Cybersecurity Law. This book is a planned textbook for applied communication majors in colleges and universities. It can also be used as a teaching book for electronic information and computer majors in colleges and vocational schools, as well as a training book for national communication professional qualifications, and can be used as a reference for relevant professional and technical and management personnel. Contents: Contents Chapter 1 Introduction 1.1 Overview of communications 1.1.1 Basic concepts of communications 1.1.2 Communication system models 1.1.3 Classification of communication systems 1.1.4 Quality evaluation of communication systems 1.1.5 Communication regulations and standards 1.2 Composition of communication networks 1.2.1 Concept of communication networks 1.2.2 Classification of communication networks 1.2.3 Composition of telecommunication networks 1.2.4 Networking structure of communication networks 1.3 Communication channels 1.3.1 Wireless channels 1.3.2 Wired transmission channels 1.3.3 Characteristics of communication channels 1.4 Information and communication technology Application and Development 1.4.1 Overview of ICT Technology Industry 1.4.2 Current Status and Trends of ICT Industry 1.5 Introduction to National Communication Professional Qualification System 1.5.1 Professional Level Evaluation of Communication Professionals 1.5.2 Communication Engineer Professional Qualification 1.5.3 Communication Industry Professional (Job) Qualification Summary of this Chapter Exercises Chapter 2 Basic Technology of Communication Network 2.1 Overview 2.1.1 Main Issues in Communication System Research 2.1.2 Basic Concepts of Digital Communication System 2.2 Source Coding 2.2.1 Digital Processing of Analog Signals 2.2 2.2 Speech Coding Technology 2.2.3 Image Coding Technology 2.3 Channel Coding 2.3.1 Concept of Error Control 2.3.2 Error Control Coding 2.4 Channel Multiplexing and Synchronization Technology 2.4.1 Overview of Channel Multiplexing 2.4.2 Multiplexing Technology 2.4.3 Digital Multiplexing Technology 2.4.4 Synchronization Technology 2.5 Baseband Transmission of Digital Signals 2.5.1 Basic Concepts of Digital Signal Transmission 2.5.2 Common Code Types for Baseband Transmission 2.5.3 Eye Diagram 2.5.4 Regeneration Relay and Equalization Technology 2.6 Modulation Technology 2.6.1 Modulation 2.6.2 Basic Concepts of Analog Modulation 2.6.3 Basic Digital Modulation 2.6.4 Modern Digital Modulation Chapter Summary Exercises Chapter 3 Telecommunications Switching 3.1 Overview of Telecommunications Service Network 3.1.1 Classification of Telecommunications Service Network 3.1.2 Telephone Communication Network 3.2 Basics of Switching Technology 3.2.1 Functions of Telecommunications Switching 3.2.2 Basic Switching Principles 3.2.3 Node Switching Technology of Telecommunications Service Network 3.3 Common Switching Methods 3.3.1 Circuit Switching 3.3.2 Packet Switching 3.3.3 Frame Relay 3.3.4 ATM 3.3.5 Development of switching technology 3.4 Digital program-controlled switching 3.4.1 Digital switching network 3.4.2 Composition of digital program-controlled switching 3.4.3 Signaling system 3.5 Soft switching 3.5.1 Overview of soft switching 3.5.2 Technical solutions for soft switching Chapter summary Exercises Chapter 4 Data communication 4.1 Overview of data communication 4.1.1 Concept of data communication 4.1.2 Data communication system 4.1.3 Data communication network 4.1.4 Computer communication network 4.2 Basic data network 4.2.1 Packet switching network (X.25 network) 4.2.2 Digital data network (DDN) 4.2.3 Frame relay (FR) 4.2.4 Asynchronous transfer mode (ATM) 4.3 Ethernet 4.3.1 Overview of Ethernet 4.3.2 Development of Ethernet Technology 4.3.3 Ethernet Interconnection 4.4 IP Network 4.4.1 TCP/IP Protocol 4.4.2 Basic Principles of IP Network 4.4.3 Internet Structure and Access 4.4.4 Development and Application of IP Technology 4.5 Information Security of Network Communication 4.5.1 Basic Concepts of Network Information Security 4.5.2 Key Technologies of Network Information Security 4.5.3 Laws and Regulations on Network Information Security Chapter Summary Exercises Chapter 5 Wireless Communication 5.1 Overview of Wireless Communication 5.1.1 Wireless Basic characteristics of propagation 5.1.2 Basic knowledge of antennas 5.1.3 Frequency resources for wireless communication 5.2 Key technologies for wireless communication 5.2.1 Multiple access technology 5.2.2 Spread spectrum communication technology 5.2.3 Orthogonal frequency division multiplexing technology 5.3 Microwave communication 5.3.1 Overview of microwave communication 5.3.2 Microwave relay communication 5.3.3 Application and development of microwave communication technology 5.4 Satellite communication 5.4.1 Overview of satellite communication 5.4.2 Satellite communication system 5.4.3 Satellite mobile communication 5.5 Wireless access 5.5.1 Overview of wireless access 5.5.2 Wi-Fi 5.5.3 Bluetooth technology 5.5.4 Ultra-wideband radio technology Chapter summary Exercises Chapter 6 Mobile communications 6.1 Overview of mobile communications 6.1.1 Classification of mobile communication systems 6.1.2 Characteristics of mobile communications 6.1.3 Concept of cellular communications 6.1.4 Management of mobile communications 6.2 Key technologies of mobile communications 6.2.1 Wireless transmission technology 6.2.2 Code division multiple access 6.3 Second generation mobile communication system 6.3.1 GSM system 6.3.2 IS-95 system 6.3.3 General packet radio service 6.4 Third generation mobile communication system 6.4.1 WCDMA system 6.4.2 TD-SCDMA system 6.4.3 CDMA 2000 System 6.5 The Fourth Generation Mobile Communication System 6.5.1 4G Development Process 6.5.2 4G Key Technologies Chapter Summary Exercises Chapter 7 Optical Communication Network 7.1 Overview of Optical Transmission 7.1.1 Basic Concepts of Optical Transmission 7.1.2 Characteristics of Optical Transmission 7.1.3 Optical Transmission System and Its Technology Development 7.2 Optical Transmission System 7.2.1 Principles of Optical Transmission 7.2.2 Composition of Optical Transmission System 7.2.3 Main Performance Indicators of Optical Transmission System 7.3 SDH Optical Transport Network Technology 7.3.1 Basic Concepts of Transport Network 7.3.2 Synchronous Digital Hierarchy (SDH) 7.3.3 SDH transmission equipment 7.3.4 SDH optical transport network 7.4 Optical wavelength division multiplexing technology 7.4.1 Overview of WDM technology 7.4.2 DWDM technology 7.4.3 WDM/OTDM hybrid transmission system 7.5 New technologies for optical communication networks 7.5.1 ASON technology 7.5.2 OTN technology 7.5.3 PTN technology Summary of this chapter Exercises Chapter 8 Broadband network communication 8.1 Overview of broadband network communication 8.1.1 Development of broadband communication network 8.1.2 Network convergence 8.2 Broadband access network technology 8.2.1 Overview of access network 8.2.2 Digital subscriber line technology 8.2.3 Optical fiber access 8.2.4 Hybrid optical fiber/coaxial cable access 8.2.5 Ethernet access 8.2.6 Broadband wireless access 8.3 Broadband core network technology 8.3.1 Broadband IP network networking technology 8.3.2 MPLS network technology 8.3.3 Broadband IP metropolitan area network 8.4 Next generation network (NGN) 8.4.1 Key technologies of NGN 8.4.2 Overview of 5G Chapter summary Exercises References Appendix A Syllabus for the Intermediate Vocational Level Examination for Communication Professionals Appendix B National Vocational Standards for the Communication Industry Appendix C Syllabus for the Basic Course of Modern Communication Technology Appendix D Abbreviations of Commonly Used Communication Terms
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