Course Details
Subject {L-T-P / C} : EE3402 : Communication Systems { 3-0-0 / 3}
Subject Nature : Theory
Coordinator : Dr. Suman Kr. Dey
Syllabus
MODULE-I (7 hours)
Introduction & representation of signals and systems in a communication system: Model and introduction of the communication system Classification of signals Signal vs Vectors Correlation Fourier analysis of Continuous and Discrete signal Concept of complex envelope Signal distortion over communication channel Energy spectral density Power spectral density Hilbert transform and phase shifting Distortion less transmission.
MODULE-II (9 hours)
Amplitude modulation and demodulation: Generation and demodulation techniques of DSB-SC, AM, SSB, QAM, & VSB Coherent & non-coherent detection Frequency Division Multiplexing Phase-locked loop.
MODULE-III (9 hours)
Angle Modulation: Nonlinear modulation - FM & PM Narrowband FM/PM, wideband FM/PM Bandwidth of angle-modulated wave Generation & Demodulation of FM Effect of nonlinear distortion and interference - Immunity in nonlinearities, interference effect, preemphasis & deemphasis Superheterodyne analog AM/FM receiver FM Broadcasting system.
MODULE-IV (7 hours)
Pulse Modulation Systems: Sampling theorem Types of Sampling Pulse modulation schemes – PAM, PPM and PWM generation and detection Quantization & its statistical characterization Pulse code modulation Time division multiplexing.
MODULE-V (5 hours)
Noise in Communication Systems: Noise and its types Thermal noise - Noise temperature & Noise figure Shot noise SNR Noise in amplitude modulated and angle modulated system in AWGN Threshold in FM demodulation FM noise performance with preemphasis and deemphasis Figure of Merit in DSB-SC, SSB, AM and FM receivers Automatic gain control (AGC) Automatic frequency control (AFC).
Course Objectives
- To understand the analog communication system and representation of signals.
- To comprehend various analog modulation & demodulation schemes, their design, operation & applications.
- To understand the sampling, pulse modulation schemes, multiplexing techniques.
- To analyze the performance of analog communication system in presence of noise and To build fundamental concepts in analog communication system for design any analog communication system as per the industrial requirements.
Course Outcomes
CO1: Understand the basic concepts of a communication system, need of modulation, and representation of signals in time and frequency domain. <br />CO2: Acquire knowledge to design linear and non-linear analog modulation techniques (AM, DSB-SC, SSB, VSB, QAM, FM and PM) and differentiate between AM and FM transmitter and super heterodyne receivers. <br />CO3: Analyze sampling theory, and different pulse modulation and demodulation techniques. <br />CO4: Analyze the impact of noise in analog communication systems.
Essential Reading
- B. P. Lathi, Zhi Ding, Modern Digital and Analog communication Systems, Oxford University press , 4th Ed., 2017
- Simon Haykin, Michael Moher, Communications Systems, John Wiley & Sons , 5th Ed., 2009.
Supplementary Reading
- H. Taub, D. L. Schilling, G. Saha,, Principles of Communication Systems, McGraw-Hill Education , 3rd Ed., 2008.
- A. Bruce Carlson, Paul B. Crilly, Communication systems : An introduction to signals and noise in electrical communication, McGraw-Hill Education , 5th Ed., 2010.