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  • 9:00 PM, Friday, 22 Oct 2021

Course Postgraduate
Semester Sem. I
Subject Code AVD613
Subject Title Communication Systems ‐ I


Motivating examples of communication systems. Spectrum availability and channels. Channel modelling - baseband and passband channels. Digital modulation schemes for baseband and passband channels. Line coding, Pulse amplitude modulation, Phase modulation, Frequency shift keying, quadrature amplitude modulation. Synchronization, intersymbol interference, and noise in communication systems. Noise modelling in communication systems - additive white Gaussian noise (AWGN) channels. Signal space concepts: Geometric structure of the signal space, vector representation, distance, norm and inner product, orthogonality, Gram-Schmidt orthogonalization procedure. Optimum receiver for AWGN channels: Optimal detection and error probability for digital signalling schemes. Matched filter and Correlation receiver. Bandlimited channels and intersymbol interference (ISI). Signal design for bandlimited channels ‐ Nyquist criterion, Partial response signaling. Non ideal bandlimited channels ‐ receivers for channels with ISI and AWGN ‐ ML receiver, its performance. Linear Equalization. Carrier and Symbol synchronization, Carrier recovery and symbol synchronization in signal demodulation, Carrier Phase estimation: ML estimation, PLL, Symbol timing estimation: ML timing estimation, Joint estimation of carrier phase and symbol timing. Case studies of digital communication receivers.

Text Books

1.Communication systems, Simon Haykin, 4 th edition Wiley, 2001.

2.Introduction to Communication Systems, Upamanyu Madhow, Cambridge University Press, November 2014.

3.Fundamentals of Digital Communication, Upamanyu Madhow, Cambridge University Press, February 2008.

4.Digital communication, Bernard Sklar, 2nd edition, Pearson Education, 2000.

5.Digital Communication,, John Proakis & Masoud Salehi, 5 th edition, McGrawHill, 2008.