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## EE6403 Discrete Time Systems and Signal Processing

Subject Information :

University        :  Anna University
Department     :  B.E. ELECTRICAL AND ELECTRONICS ENGINEERING
Semester          : 04 th sem
Year                  : 02 nd year
Regulation       : R2013
Subject Code   : EE6403
Subject Name  : Discrete Time Systems and Signal Processing

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EE6403 Discrete Time Systems and Signal Processing | Important  Questions

### EE6403 DISCRETE TIME SYSTEMS AND SIGNAL PROCESSING – SYLLABUS – R- 2013

OBJECTIVES:

 To classify signals and systems & their mathematical representation.
 To analyse the discrete time systems.
 To study various transformation techniques & their computation.
 To study about filters and their design for digital implementation.
 To study about a programmable digital signal processor & quantization effects.

UNIT I INTRODUCTION

Classification of systems: Continuous, discrete, linear, causal, stable, dynamic, recursive, time
variance; classification of signals: continuous and discrete, energy and power; mathematical
representation of signals; spectral density; sampling techniques, quantization, quantization error,
Nyquist rate, aliasing effect.

UNIT II DISCRETE TIME SYSTEM ANALYSIS

Z-transform and its properties, inverse z-transforms; difference equation – Solution by ztransform,application to discrete systems – Stability analysis, frequency response – Convolution – Discrete TimeFourier transform , magnitude and phase representation.

UNIT III DISCRETE FOURIER TRANSFORM & COMPUTATION

Discrete Fourier Transform- properties, magnitude and phase representation – Computation of DFT
using FFT algorithm – DIT &DIF using radix 2 FFT – Butterfly structure.

UNIT IV DESIGN OF DIGITAL FILTERS

FIR & IIR filter realization – Parallel & cascade forms. FIR design: Windowing Techniques – Need and choice of windows – Linear phase characteristics. Analog filter design – Butterworth and Chebyshev approximations; IIR Filters, digital design using impulse invariant and bilinear transformation – mWarping, pre warping.

UNIT V DIGITAL SIGNAL PROCESSORS

Introduction – Architecture – Features – Addressing Formats – Functional modes – Introduction to

Commercial DSProcessors.

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