Syllabus - Digital signal Processing (EC-601)
Electronics & Communication Engineering
Digital signal Processing (EC-601)
VI-Semester
Unit - I
Discrete-Time Signals and Systems
Discrete-time signals, discrete-time systems, analysis of discrete-time linear time-invariant systems,discrete time systems described by difference equation, solution of difference equation, frequency domain implementation of discrete-time systems, stability and causality, representation of discrete time signals and systems.
Unit - II
The z-Transform
The direct z-transform, properties of the z-transform, rational z-transforms, inversion of the z transform,analysis of linear time-invariant systems in the z- domain, block diagrams and signal flow graph representation of digital network, matrix representation.
Unit - III
Frequency Analysis of Discrete Time Signals
Discrete fourier series (DFS), properties of the DFS, discrete Fourier transform (DFT), properties of DFT, two dimensional DFT, circular convolution.
Unit - IV
Efficient Computation of the DFT
FFT algorithms, decimation in decomposition for ‘N’composite number. time algorithm, decimation in frequency algorithm,
Unit - V
Digital filters Design Techniques
Design of IIR and FIR digital filters, Impulse invariant and bilinear transformation, windowing techniques rectangular and other windows, examples of FIR filters, design using windowing.
Practicals
- Generation, analysis and plots of discrete-time signals.
- Implementation of operations on sequences (addition, multiplication, scaling, shifting, folding etc).
- Implementation of Linear time-invariant (LTI) systems and testing them for stability and causality.
- Computation and plot of DTFT of sequences, verification of properties of DTFT.
- Computation and plots of z-transforms, verification of properties of z-transforms.
- Computation and plot of DFT of sequences, verification of properties of DFT.
- Computation and plots of linear/circular convolution of two sequences.
- Computation of radix-2 FFT- Decimation in time and Decimation in frequency.
- Implementation of IIR and FIR filter structures (direct, cascade, parallel etc).
- Implementation of various window design techniques (Rectangular, Bartlett, Hann, Hamming etc).
Reference Books
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Oppenheim and Schafer: Digital Signal Processing, PHI Learning.
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Johnny R. Johnson: Introduction to Digital Signal Processing, PHI Learning.
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Proakis: Digital Signal Processing, Pearson Education.
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Rabiner and Gold: Theory and Application of Digital Signal Processing, PHI Learning.
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Ingle and Proakis: Digital Signal Processing- A MATLAB based Approach, Thompson, Cengage Learning.