Topics Covered

Overview of communication systems, signal spectra, Amplitude modulation and demodulation: DSB-SC, SSB, VSB. Frequency modulation and demodulation: NBFM, WBFM and Phase Modulation (PM). Pulse Modulation:  PAM, PCM, Delta Modulation, Frequency division and time division multiplexing and their application. Digital Modulation systems, Modems, Introduction to teletraffic theory. Radio wave propagation, effects of ionosphere and earth's curvature. Introduction  to satellite communication. Introduction to cellular mobile communication. Introduction to telephony, different types of switching, SPC and digital switching systems, time and space switching. Introduction to ATM, SDH, SONET and optical communications. RADAR and its applications. Introduction: Principle, evolution, networks, exchange and international regulatory bodies. Telephone apparatus: Microphone, speakers, ringer, pulse and tone dialing mechanism, side-tone mechanism, local and central batteries and advanced features. Switching system: Introduction to analog system, digital switching systems space division switching, blocking probability and multistage switching, time division switching and two dimensional switching. Traffic analysis: Traffic characterization, grades of service, network blocking probabilities, delay system and queuing. Modern telephone services and network: Internet telephony, facsimile, integrated services digital network, asynchronous transfer mode and intelligent networks. Introduction to cellular telephony and satellite communication.