本书是关于通信系统的经典著作，全面覆盖了各种主要的电子通信系统。全书现代通信系统与数据通信和因特网相结合，反映了最新的发展方向；通信系统的内容按照通信方式进行分类，符合国内大多数教材的通行做法；专门用一章的篇幅讨论无线通信中的天线与电波传播，对学生理解实际通信系统有很大的帮助作用；无线通信技术一章总结介绍了该技术的最新发展动向，包括无线局域网、蓝牙、WiMAX、RFID、UWB等；专门有一章介绍通信测试和测量技术，对学生走向工作有帮助。

本书是关于通信系统的经典著作，全面覆盖了各种主要的电子通信系统。全书采用丰富的插图和浅显的语言描述最新的通信技术，避免了高深的数学公式，特别适合用作大学本科的通信系统的双语教材。本书采用国内流行的每一章介绍一种主要通信系统的方式，便于学生自学以及教学内容的讲授。本书共分14章，包括通信系统导论、多路复用、通信系统中的二进制传输、网络和局域网导论、传输线、天线与电波传播、因特网技术、微波通信、卫星通信、电信系统、光纤通信、蜂窝电话技术、无线技术、通信测试与测量等，最后还给出了部分习题的答案以及术语表。

本书可作为通信工程专业、电子信息工程专业、信息工程专业的本科生，以及通信与信息系统、信号与信息处理、电磁场与微波技术等专业研究生的教材。

Preface

Chapter 1 Introduction to Electronic Communication

 1-1 The Significance of Human Communication

 1-2 Communication Systems

 1-3 Types of Electronic Communication

 1-4 Modulation and Multiplexing

 1-5 The Electromagnetic Spectrum

 1-6 Bandwidth

 1-7 A Survey of Communication Applications

 1-8 Careers in the Communication Industry

Chapter 2 Multiplexing and Demultiplexing

 2-1 Multiplexing Principles

 2-2 Frequency-Division Multiplexing

 2-3 Time-Division Multiplexing

 2-4 Pulse-Code Modulation

 2-5 Duplexing

Chapter 3 The Transmission of Binary Data in Communication Systems

 3-1 Digital Codes

 3-2 Principles of Digital Transmission

 3-3 Transmission Efficiency

 3-4 Modem Concepts and Methods

 3-5 Wideband Modula1:ion

 3-6 Broadband Modem Techniques

 3-7 Error Detection and Correction

 3-8 Protocols

Chapter 4 Introduction to Networking and Local-Area Networks

 4-1 Network Fundamentals

 4-2 LAN Hardware

 4-3 Ethernet LANs

 4-4 Token-Ring LAN

Chapter 5 Transmission Lines

 5-1 Transmission Line Basics

 5-2 Standing Waves 168

 5-3 Transmission Lines as Circuit Elements

 5-4 The Smith Chart

Chapter 6 Antennas and Wave Propagation

 6-1 Antenna Fundamentals

 6-2 Common Antenna Types

 6-3 Radio Wave Propagation

Chapter 7 Internet Technologies

 7-1 Internet Applications

 7-2 Internet Transmission Systems

 7-3 Storage-Area Networks

 7-4 Internet Security

Chapter 8 Microwave Communication

 8-1 Microwave Concepts

 8-2 Microwave Lines and Devices

 8-3 Waveguides and Cavity Resonators

 8-4 Microwave Semiconductor Diodes

 8-5 Microwave Tubes

 8-6 Microwave Antennas

 8-7 Microwave Applications

Chapter 9 Satellite Communication

 9-1 Satellite Orbits

 9-2 Satellite Communication Systems

 9-3 Satellite Subsystems

 9-4 Ground Stations

 9-5 Satellite Applications

 9-6 Global Positioninq System

Chapter 10 Telecommunication Systems

 10-1 Telephones

 10-2 Telephone System

 10-3 Facsimile

 10-4 Paging Systems

 10-5 Internet Telephony

Chapter 11 Optical Communication

 11-1 Optical Principles

 11-2 Optical Communication Systems

 11-3 Fiber-Optic Cables

 11-4 Optical Transmitters and Receivers

 11-5 Wavelength-Division Multiplexing

 11-6 Passive Optical Networks

Chapter 12 Cell Phone Technologies

 12-1 Cellular Telephone Systems

 12-2 Advanced Mobile Phone System (AMPS)

 12-3 Digital Cell Phone System

Chapter 13 Wireless Technologies

 13-1 Wireless LAN

 13-2 PANs and Bluetooth

 13-3 ZigBee and Mesh Wireless Networks

 13-4 WiMAX and Wireless Metropolitan- Area Networks

 13-5 Infrared Wireless

 13-6 Radio-Frequency Identification and Near-Field Communications

 13-7 Ultrawideband Wireless

Chapter 14 Communication Tests and，Measurements

 14-1 Communication Test Equipment

 14-2 Common Communication Tests

 14-3 Troubleshooting Techniques

 14-4 Electromagnetical Interference Testing

Answers to Selected Problems

Glossary