EC8553 DISCRETE-TIME SIGNAL PROCESSING Anna University Syllabus Regulation 17

EC8553 DISCRETE-TIME SIGNAL PROCESSING  Anna University Syllabus Regulation 17

EC8553   DISCRETE-TIME SIGNAL PROCESSING                      L T P C 4 0 0 4 

OBJECTIVES:  To learn discrete fourier transform, properties of DFT and its application to linear filtering  To understand the characteristics of digital filters, design digital IIR and FIR filters and apply these filters to filter undesirable signals in various frequency bands  To understand the effects of finite precision representation on digital filters  To understand the fundamental concepts of multi rate signal processing and its applications  To introduce the concepts of adaptive filters and its application to communication engineering

UNIT I DISCRETE FOURIER TRANSFORM                                                                             12 Review of signals and systems, concept of frequency in discrete-time signals, summary of analysis & synthesis equations for FT & DTFT, frequency domain sampling, Discrete Fourier transform (DFT) - deriving DFT from DTFT, properties of DFT - periodicity, symmetry, circular convolution. Linear filtering using DFT. Filtering long data sequences - overlap save and overlap add method. Fast computation of DFT - Radix-2 Decimation-in-time (DIT) Fast Fourier transform (FFT), Decimation-in-frequency (DIF) Fast Fourier transform (FFT). Linear filtering using FFT.

UNIT II INFINITE IMPULSE RESPONSE FILTERS                                                                 12 Characteristics of practical frequency selective filters. characteristics of commonly used analog filters - Butterworth filters, Chebyshev filters. Design of IIR filters from analog filters (LPF, HPF, BPF, BRF) - Approximation of derivatives, Impulse invariance method, Bilinear transformation. Frequency transformation in the analog domain. Structure of IIR filter - direct form I, direct form II, Cascade, parallel realizations.

UNIT III FINITE IMPULSE RESPONSE FILTERS                                                                12   
Design of FIR filters - symmetric and Anti-symmetric FIR filters - design of linear phase FIR filters using Fourier series method - FIR filter design using windows (Rectangular, Hamming and Hanning window), Frequency sampling method. FIR filter structures - linear phase structure, direct form realizations

UNIT IV FINITE WORD LENGTH EFFECTS                                                                          12 Fixed point and floating point number representation - ADC - quantization - truncation and rounding - quantization noise - input / output quantization - coefficient quantization error - product quantization error - overflow error - limit cycle oscillations due to product quantization and summation - scaling to prevent overflow.

UNIT V INTRODUCTION TO DIGITAL SIGNAL PROCESSORS                                        12 DSP functionalities - circular buffering – DSP architecture – Fixed and Floating point architecture principles – Programming – Application examples.


OUTCOMES: At the end of the course, the student should be able to  Apply DFT for the analysis of digital signals and systems  Design IIR and FIR filters  Characterize the effects of finite precision representation on digital filters  Design multirate filters  Apply adaptive filters appropriately in communication systems

1. John G. Proakis & Dimitris G.Manolakis, ―Digital Signal Processing – Principles, Algorithms & Applications‖, Fourth Edition, Pearson Education / Prentice Hall, 2007. (UNIT I – V)

1. Emmanuel C. Ifeachor & Barrie. W. Jervis, ―Digital Signal Processing‖, Second Edition, Pearson Education / Prentice Hall, 2002.
2. A. V. Oppenheim, R.W. Schafer and J.R. Buck, ―Discrete-Time Signal Processing‖, 8th Indian Reprint, Pearson, 2004.
3. Sanjit K. Mitra, ―Digital Signal Processing – A Computer Based Approach‖, Tata Mc Graw Hill, 2007.
4. Andreas Antoniou, ―Digital Signal Processing‖, Tata Mc Graw Hill, 2006.

Click Here to Download Anna University Syllabus

Anna University Syllabus Regulation 17 (ECE Sem-5) DIGITAL COMMUNICATION

Do You want International Scholarship? To Know more about the scholarship : Click Here

Are you a fresher and looking for Job? To know more about the Job Openings: Click Here

Click to Download Other ECE Materials: CLICK HERE

Click to Download Other CSE Materials: CLICK HERE

Click to Download MECH Materials: CLICK HERE