DA 251: Signal, Systems and Networks (July-Nov 2023)

The course is open to B.Tech. (3rd Semester)

Lectures:

11 AM – 11.55 AM, Monday

9 AM - 9.55 AM, Thursday

10 AM- 10.55 AM, Friday

Lectures are being held offline in Room No 5103 (in Core 5).

Instructor:

Dr. Arghyadip Roy (Pre-Midsem)
Prof. Ratnajit Bhattacharjee (Post-Midsem)

Course Content/ Syllabus:

Pre-midsem

Continuous and discrete time signals: properties of signals and various signal operations ; Signal representation: signal space and orthogonal bases , Fourier series representation of continuous time signals , Fourier transform ; Sampling theorem: aliasing, signal reconstruction, ideal interpolation, zero and first-order hold ; Discrete-Time Fourier Transform (DTFT) , Discrete Fourier Transform (DFT) and their properties ; Laplace Transform ; Z-transform .

 Post-midsem

Classification of systems and system properties; Linear Time Invariant (LTI) system: continuous and discrete time; Time domain representation of LTI system: Impulse and step response, convolution and response to arbitrary input; Frequency response of LTI systems. Overview of electrical networks, Node and mesh analysis, superposition, Thevenin's theorem, Norton’s theorem, reciprocity. Sinusoidal steady state analysis: phasor representation, complex power, maximum power transfer, Time and frequency domain analysis of linear bilateral networks, application Laplace transform; Linear 2-port network parameters.

Textbooks:

• A.V. Oppenheim, A. S. Willsky, and H. S. Nawab, Signals and Systems, 2/e, Pearson, 2015.

•M. E. Van Valkenberg, and T. S. Rathore, Network Analysis, Revised 3/e, Pearson, 2019.

References:

•M. J. Roberts, Fundamentals of Signals and Systems, Tata McGraw Hill, 2007.

•B. P. Lathi, Modern Digital and Analog Communication Systems, 3/e, Oxford University Press, 1998.

•B.P. Lathi & Z. Ding, Modern Digital and Analog Communication Systems,  4/e, Oxford University Press, 2010.

•S. Haykin and B. Van Veen, Signals and Systems, John Wiley and Sons, 1998.

•W. H. Hyat, J. E. Kemmerly, and S. M. Durbin, Engineering Circuit Analysis, 6/e, Tata McGraw Hill, 2006.

Grading Scheme:

Pre-Midsem Quiz: 10%

Midsem: 30%

Post-Midsem Quiz: 10%

Endsem: 50% (10 marks (pre-midsem), 40 marks (post-midsem))

Lecture Schedule:

Lecture 1: Introduction

Lecture 2: Signal Types

Lecture 3: Signals & Vectors

Lecture 4: Trigonometric Fourier Series

Lecture 5: Examples of Fourier Series

Lecture 6: Exponential Fourier Series

Lecture 7: Fourier Transform

Lecture 8: Examples of Fourier Transform

Lecture 9: Properties of Fourier Transform

Lecture 10: Sampling 

Lecture 11: Issues in Sampling

Lecture 12: Problems on Sampling

Lecture 13: DTFT

Lecture 14: DFT

Lecture 15: Laplace Transform

Lecture 16: Examples of LT

Lecture 17: Z Transform

Lecture 18: Examples on Z transform

Problem Set:

Problem set 1- FS and FT: Due on 28 th August

Problem set 2- Create your signal: Due on 11th September

Examinations:

Quiz 1: 8 th September, 10-11 AM, Room: 5103