Course Details

Subject {L-T-P / C} : EC3501 : Principles of Communication Systems { 3-0-0 / 3}

Subject Nature : Theory

Coordinator : Dr. Pawan Kumar

Syllabus

Module 1
Spectral Analysis: Fourier series, Response of a linear system, Normalized power in a Fourier expansion, Power spectral density. The Fourier transform, Convolution, Parseval’s theorem, Power and energy transfer through a network, Auto and Cross correlations.
(4 hours)

Module 2
Amplitude Modulation Systems: Frequency translation, recovery of baseband signals, amplitude modulation, maximum allowable modulation, the square law demodulator, spectrum of AM signal, balanced modulator, SSB modulation and generation, VSB, FDM.
(8 hours)

Module 3
Frequency Modulation System: Phase and frequency modulation and their relationship, frequency deviation, spectrum of FM signal, BW of FM signal, the effect of modulation on BW, constant BW, FM phasor diagram, narrowband FM, Armstrong and parameter variation methods of FM generation.
(8 hours)

Module 4
Analog to Digital Conversion: Pulse modulation systems, sampling theorem, pulse amplitude modulation, quantization of signals, quantization error, pulse code modulation (PCM) system, companding, time-division multiplexing (TDM), DPCM, DM, ADM.
Basic Digital Modulation Techniques: DM, ADM, DPCM, and ADPCM for speech, ASK, PSK, QAM, FSK, etc.
Baseband Communication: Line coding, matched filter, correlation receiver, basics of inter-symbol interference, equalization.
(16 hours)

Module 5
Noise in Communication System: Resistor noise, available power, noise temperature, noise bandwidth, two ports noise bandwidth, input noise temperature, noise figure, equivalent-noise temperature of a cascade example of receiving system.
(4 hours)

Course Objectives

Course Outcomes

After the completion of this course, students will be able to: <br />CO1: understand the importance of Fourier analysis to communication systems. <br />CO2: understand fundamental concepts of analog and digital communication systems. <br />CO3: describe various components of communication systems in the time domain and frequency domain. <br />CO4: investigate and compare the performance of different communication systems. <br />CO5: apply the knowledge to design some basic communication systems on their own.

Essential Reading

Supplementary Reading