Introduction to Telecommunication Systems – Chapter 1 – Spring 2021 Outline (chap 1) - Introduction to Telecommunication Systems Introduction and History Communication Systems Transmission Media Characteristics Definition Modes Elements Guided Transmission Media Unguided Transmission Media Comparison Between Transmission Media Communication Systems Configurations Performance of Communication Systems Chap 1: Intro to Telecom - Spring 2021 2 1 Introduction Telecommunications, especially the Internet, has accelerated the globalization of commerce and changed the fabric of society. According to an industry market study by the Insight Research Corporation, the expectation of the telecommunications services revenue was $1.5-2.9 trillion in 2019. Chap 1: Intro to Telecom - Spring 2021 3 Introduction (2) International standards are essential to ensure that new equipment has compatibility on a global level with existing and future equipment. “To understand a science it is necessary to know its history” Auguste Comte Chap 1: Intro to Telecom - Spring 2021 4 2 Historical Background Telegraph Battery (Volta, 1799) Morse Code (Morse, 1837) Chap 1: Intro to Telecom - Spring 2021 5 Historical Background Telephony Alexander Graham Bell (1876) Invention of Triode Amplifier (DeForest, 1906) Automatic Switching (1897) Chap 1: Intro to Telecom - Spring 2021 6 3 Historical Background Wireless Communications Magnetic Field/ Electric Field (Faraday 1831) EM wave (1864) Radio Transmission at a distance of 2 km (1895) Amplitude Modulation (1920) Frequency Modulation (1933) Commercial Television (1936) Chap 1: Intro to Telecom - Spring 2021 7 Historical Background The past 100 years Invention of Transistors (1947) Integrated Circuits (1958) Telstar I Satellite (1962) Fiber Optic lines Chap 1: Intro to Telecom - Spring 2021 8 4 Outline (chap 1) - Introduction to Telecommunication Systems Introduction and History Communication Systems Transmission Media Characteristics Definition Modes Elements Guided Transmission Media Unguided Transmission Media Comparison Between Transmission Media Communication Systems Configurations Performance of Communication Systems Chap 1: Intro to Telecom - Spring 2021 9 5