module 4

Signals & Systems

Syllabus

Frequency domain representation of discrete time signals, Discrete time fourier series for discrete periodic signals. Properties of DTFS. Discrete time fourier transform (DTFT) and its properties. Analysis of discrete time LTI systems using DTFT. Magnitude and phase response.

Discrete Time Fourier Series (DTFS) | Solved problems | Module 4 | S&S Lect 44

Topics

Intro - Discrete time Fourier series - DTFS - Problem No 1 : Calculation of DTFS coefficient - Problem No 2 : Calculation of DTFS coefficient

Discrete Time Fourier Transform (DTFT) | importance of magnitude & phase | Module 4 | S&S Lect 45

Topics

Intro - Expression of discrete time Fourier transform - Condition for existence of DTFT - Magnitude and phase response importance

Solved problem - Discrete Time Fourier Transform (DTFT) | Module 4 | S&S Lect 46

Topics

Problem 1 : calculating the DTFT of unit impulse - Problem 2 : calculating the DTFT of shifted unit impulse - Problem 3 : calculating the DTFT of step response - Problem 4 : calculating the DTFT of discrete values - Problem 5 - Problem 6

Properties of Discrete Time Fourier Transform (DTFT) | Module 4 | S&S Lect 47

Topics

Intro - Linearity property - Time shifting property - Frequency shifting property - Stability of DTFT - Time reversal property - Convolution property

Previous year question paper solution | KTU SEPT 2020 | DTFT | Signals & Systems | Lect 55

Question paper

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY

Fourth semester B.Tech examinations (S), Sept 2020

Focused topic - Discrete time Fourier transform (DTFT)

Intro - Problem 8b) impulse response calculation - Problem 9a) Find DTFT of x[n]=u[n]-u[n-N] , iii) x[n] is left sided - Problem 9b) find impulse response

Previous year question paper solution | KTU DEC 2019 | DTFT | Signals & Systems | Lect 56

Question paper

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY

Fourth semester B.Tech examinations (S), Dec 2019

Focused topic - Discrete time Fourier transform (DTFT), Discrete time Fourier series (DTFS)

Intro - Problem 7b) Find DTF series coefficient of x[n]

Previous year question paper solution | KTU MAY 2019 | DTFT & DTFS | Signals & Systems | Lect 57

Question paper

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY

Fourth semester B.Tech examinations (S), MAY 2019

Course Name: SIGNALS & SYSTEMS

Focused topic - Discrete time Fourier transform (DTFT)

Intro - Problem 7b) Find DTF series coefficient of x[n] - Problems 8a) Find DTFS coefficient of x(n) = 5+sin(n*pi/2)+cos(n)pi/4) - magnitude and phase plot - using DTFS find frequency response of the system