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1、Advanced Communication Systems 现代通信系统(双语),Course Brief 课程概要,Course Name:Advanced Communication Systems 课程名称：现代通信系统This is a discipline course for the final-year student in Information Engineering major.这是信息工程专业大四学生的一门专业课。This course will be taught in bilingual.All teaching materials,including lectur
2、e notes,homeworks,experiment,examination,will only in English.本课程是双语教学，所有教学材料(包括课件、作业、实验、考试)均用英语。,Course Purpose课程目标,To introduce the telecommunication technology介绍通信技术To cover the history of Telecommunication覆盖通信历史To explain the principle of data transmission 解释数据信号传输原理To illustrate how communicati
3、on networks are designed 解释通信网络是如何设计的To describe the trend for network convergence 描述网络融合的趋势,Textbook 教材,Textbook:Tamara Dean,Guide to Telecommunication Technology,CENGAGE(previously Thomson Learning)2003,ISBN 0-619-03547-1 远程通信技术,清华大学出版社影印版，2003年,758页,78元,ISBN 7-302-07266-3Website:http:/Review Ques
4、tions,hands-on Activities,and Case Projects in each chapter.每章后有丰富的复习思考题和实验项目。,References 参考书,R.L.Freeman,Fundamentals of Telecommunications,Wiley,1999G.Kennedy,B.Davis,Electronic Communication Systems,McGraw-Hill,1993Ray Blake,Electronic Communication Systems(2nd ed)电子工业出版社，2002年Wayne Tomasi,Electr
5、onic Communications Systems(4th ed)电子工业出版社，2002年,Course Evaluation 课程结业方式,75%Final Close-book Exam 期末闭卷考试25%Homework,Experiment,Attendance 平时作业、实验、出勤率All work should be written in ENGLISH.所有的作业和考试必须使用英文书写提交。Homework and Experiment report should be handed in on the Course website http:/作业和实验必须提交到指定的网
6、站。,Course Website 课程的网站,Website:http:/How to log in:Username is your student ID No.Password is initialized to your class number(such as 01510400)Find the course“现代通信系统”on the site.All 60 students have been registered in the course.You should be able to see the course.,Telecommunications Overview,Cha
7、pter 1,Advanced Communication Systems 现代通信系统(双语),Objectives,In this chapter,you will learn to:Define communication and telecommunicationIllustrate components of a communication systemUnderstand the difference between voice,video,and data telecommunicationsDescribe how telecommunication is used in a
8、variety of industriesIdentify careers available to telecommunications professionalsIdentify the organizations responsible for establishing significant telecommunications standards and policies,Section 1.1 What is communication?什么是通信？,The Romans used the Latin word communicare when they meant to make
9、 common,to share,or to impart.”Definition of CommunicationCommunication is the sharing of information or messages between two or more entities.通信的定义通信是指两个或多个实体之间共享信息的过程。,Elements of a Communication System通信系统基本组成,SIX elements:共有六个部分Source-the originator of the message,whether it is a person or machi
10、ne.信源Transmitter-the equipment that modifies the message(either data or voice)into the form required for transmission.发射机Communications channel-the means of carrying the signal from the source to the destination.信道,Elements of a Communication System(cont.),Transmission media-may be physical,like a c
11、opper wire or fiber optic cable,or atmospheric,like radio waves.传输介质Receiver-is the device that captures the message from the communications channel and converts it into a form that the person or machine at the destination can understand.接收机Destination-the person or machine to whom the message is di
12、rected 目的端,Elements of a Communication System Diagram,Flow of Messages信息的流向（工作方式）,Simplex-the type of communication in which messages flow in only one direction,from source to destination.单工Half-duplex communication-occurs when messages travel in both directions between the source and the destinatio
13、n,but in only one direction at a time.半双工Full-duplex communication-messages can travel over the communications channel in both directions simultaneously.全双工,Flow of Messages,Relative Number of Sources and Destinations收发端相对数量（通信方式）,One-to-one communication-a single source sends information to a singl
14、e destination.一对一通信One-to-many communication-a single source simultaneously sends information to multiple destinations.一对多通信Many-to-many communication-occurs when many sources issue messages to many destinations.多对多通信,Relative Number of Sources and Destinations,Quick Quiz,Listen to my question caref
15、ully.1.True of False2.Fill in the blank3.Fill in the blank4.Fill in the blank,Section 1.2 What is Telecommunication?什么是电信？,Communication that spans a distance.Voice telecommunication-using electrical signals to transmit human voice across a distance,such as telephones and radio broadcasts.Video tele
16、communication-the electrically-based transmission of moving pictures and sound across a distance.Data telecommunication-the use of electrical signals to exchange encoded information between computerized devices across a distance.,What is Telecommunication?,Quick Quiz,Listen to my question carefully.
17、1.Fill in the blank2.Fill in the blank3.Fill in the blank,Voice,The telephony infrastructure includes cross-continental fiber optic cable to facilitate international voice telecommunications and national and regional cabling to connect long distance calls.It includes numerous local,regional,and nati
18、onal switching centers where phone calls are routed to their destinations by computerized telephone switches.It also includes local connections(up to three miles in length)to residences(住地)and businesses capable of greater connection speed and volume than ever before.Finally,it includes the sophisti
19、cated telephone equipment and applications that users rely on.,Section 1.3 Modern Telecommunication Systems Data,Telegraph-one of the first data telecommunications inventions,uses wire to convey(传送)electrical pulses that represent letters or numbers over a distance.Newer data telecommunications tech
20、nology is not only faster,but also ensures better accuracy due to more reliable transmission media and techniques that enable the receiver to monitor the integrity of the data it has received.,Data,Present-day data telecommunications technologies include:Encoded information transmitted over traditio
21、nal telephone lines Encoded information saved to fixed media,such as a hard disk,floppy disk,or CD ROMEncoded information exchanged between two computers that are directly connected by a single cableEncoded information exchanged by a group of connected computers on a networkEncoded information excha
22、nged by two devices over radio waves,Types of Telecommunications Companies,Service providers-those that supply the communications channels for voice and data transmission.服务提供商Equipment providers-those that supply the user and connectivity equipment,such as telephones.设备提供商,Growth of the Telecommuni
23、cations Industry,The United States government recently released a report citing the number of high-speed lines connecting individuals and businesses to the Internet increased 36%during the first half of the year 2001,for a total of 9.6 million high-speed connections.The number of minutes Americans s
24、pend on interstate long-distance telephone calls has quadrupled in the last 25 years to a total of 600 billion minutes.As of July 2001,the number of computers that provide files and Web pages to users on the Internet had grown to over 125 million,maintaining a 63%annual growth rate.,Section 1.4 Tele
25、communication at Work生活中的电信 Financial Services,Call center-a facility dedicated to fielding customer calls.Interactive voice response(IVR)system-a method of sending information over the telephone by pressing buttons in response to recorded voice prompts,to answer routine questions.Automatic call dis
26、tributor(ACD)-uses computerized devices attached to the phone lines to automatically route calls to specific phone extensions.,Financial Services,Utilities,Recent deregulation(the introduction of competition for services)in the utilities industry has made telecommunications even more critical to thi
27、s industry.To persuade their customers not to choose another utility provider,utility companies must strive harder to please their customers,in part by answering questions as promptly as possible.An advanced call center at a utilities company typically uses both an ACD and an IVR.,Manufacturing,The
28、use of advanced voice,video,and data telecommunications in manufacturing has resulted in faster and more efficient production of goods and at the same time it has also increased global competition.Supply chain management,an electronic means for connecting a manufacturer with its suppliers and distri
29、butors is a notable example of the use of telecommunications in the manufacturing industry.,Transportation,Examples of the transportation industrys use of telecommunications include:computerized flight control for airport trafficsoftware that issues maps and directions based on a given starting poin
30、t and destinationgovernment-sponsored transportation hotlines that inform callers about road construction and hazardous road conditionssystems for suggesting the most efficient route between multiple locations,Retail,E-business-the use of data telecommunications to conduct business transactions.The
31、apparel and sportswear segment of the retail industry uses particularly sophisticated and unique telecommunications technology for their online business.Before the products even reach a retailers point of sale(such as a Web site),telecommunications technology helps with manufacturing,quality control
32、,inventory,distribution,and product shipping.,Healthcare,Telemedicine-a field that brings patients and healthcare professionals together by exchanging voice,video,and data over distances when they cant meet face-to-face.Improves the quality of healthcare because ailments can often be diagnosed and t
33、reated faster.Also streamlines the record-keeping process for clinicians who spend a great deal of time entering data about their cases.,Government and Education,Many government agencies use advanced telecommunications to provide faster and easier access to public services.Telecommunications also pl
34、ays a significant role in education.In South Carolina,a large public school district is improving education through distance learning.Distance learning-the use of telecommunications technology to inform,educate,or train students across distances.,New Frontiers for Telecommunications Technology,Fiber
35、 optic cable-a transmission media that contains thin strands of fiber in its core and uses pulses of light to convey signals.Capable of carrying higher amounts of data,voice,or video within a given time span than any other type of media.,New Frontiers for Telecommunications Technology contd,Quick Qu
36、iz,Listen to my question carefully.1.Fill in the blank2.Fill in the blank3.Fill in the blank,Section 1.5 Careers in Telecommunications电信职业,No matter what type of telecommunications position you seek,the following will serve you well:The ability to install,maintain,and troubleshoot the system of cabl
37、es and wires that carry telecommunications servicesA thorough knowledge of the public telephone network,and the carriers and regulations that are part of itFamiliarity with enhanced telephone services(such as IVR and ACD)A mastery of the basic principles of electricity,Careers in Telecommunications,
38、No matter what type of telecommunications position you seek,the following will serve you well:A clear understanding of how computers accept and interpret data from other computers over a networkThe ability to design,install,and troubleshoot basic networksAn understanding of how the Internet worksFam
39、iliarity with wireless transmission methods,Careers in Telecommunications,Areas within the field of telecommunications that you might consider specializing in:Networked convergence of voice,video,and dataElectronics and circuit design and engineeringDevelopment of telephony and computer applications
40、Wireless telephony and networkingInformation security,Careers in Telecommunications,Quick Quiz,Listen to my question carefully.1.True or False2.True or False3.True or False,Section 1.6 Telecommunications Standard Organization 电信标准化组织,Standards-documented agreements containing technical specification
41、s or other precise criteria that stipulate how a particular product or service should be designed or performed.American National Standards Institute(ANSI)-ensures that the test results from one manufacturer can be accurately compared to other manufacturers results.Both ANSI and ITU are involved in s
42、etting standards for Integrated Services Digital Network(ISDN)communications.,ANSI,The ANSI(American National Standards Institute)-an organization composed of over a thousand representatives from industry and government who together determine standards for the electronics industry.ANSI does not dict
43、ate that manufacturers comply with their standards,but requests them to voluntarily comply.,TIA and EIA,The EIA(Electronics Industry Alliance)-is a trade organization composed of representatives from electronics manufacturing firms across the United States.TIA(Telecommunications Industry Association
44、)-focuses on standards for information technology,wireless,satellite,fiber optics,and telephone equipment.,IEEE,IEEE(Institute of Electrical and Electronic Engineers)-an international society composed of engineering professionals.Its goals are to promote development and education in the electrical e
45、ngineering and computer science fields.,ATIS,ATIS(The Association for Telecommunications Industry Solutions)-a North American trade association made of thousands of companies that provide communications equipment and services.Its membership reviews emerging technology and agrees on standards and ope
46、rating procedures to ensure that services and equipment supplied by multiple companies can be easily integrated.,ISO,ISO(International Organization for Standardization)-a collection of standards organizations representing 130 countries with its headquarters located in Geneva,Switzerland.Its goal is
47、to establish international technological standards to facilitate global exchange of information and barrier-free trade.,ITU,The ITU(International Telecommunications Union)-a specialized United Nations agency that regulates international telecommunication usage,including radio and TV frequencies,sate
48、llite and telephony specifications,networking infrastructure,and tariffs applied to global communication.Provides developing countries with technical expertise and equipment to advance their technological base.,U.S.Government Regulatory and Legislative Bodies,Federal Communications Commission(FCC)-f
49、ounded in 1934 in response to the growth and need for control over the telecommunications industry,is the primary national regulatory agency involved in telecommunications.Public Service Commission(PSC)-the states equivalent to the FCC.,Quick Quiz,Listen to my question carefully.1.Fill in the blank2
50、.Fill in the blank3.Fill in the blank,Class Discussion Topics,1.Examples of present-day data communication2.How has telemedicine affected the quality of health care?Experiences with distance learning.,Summary,Communication is the conveyance and understanding of meaningful information from one entity
