## April 23, 2010

### IT1201 SIGNALS AND SYSTEMS B.TECH. INFORMATION TECHNOLOGY SEMESTER III

ANNA UNIVERSITY CHENNAI:: CHENNAI 600 025
CURRICULUM 2004
B.TECH. INFORMATION TECHNOLOGY
SEMESTER III

IT1201 SIGNALS AND SYSTEMS

AIM
To understand the concepts of continuous time, discrete time signals and the analysis of continuous and discrete systems.

OBJECTIVES
• To understand the representation and classification of signals
• To understand the basics of signal analysis using transforms
• To analyze the linear time invariant systems using Fourier, Laplace Transforms and state equations.
• To study the analysis of Discrete Time signals using DFT and Z-transforms.
• To find the frequency response of linear time invariant discrete time system using FFT and Z-transform analysis.

UNIT I CLASSIFICATION OF SIGNALS AND SYSTEMS 9
Continuous time signals (CT signals), discrete time signals (DT signals) - step, Ramp, Pulse, Impulse, Exponential, Classification of CT and DT signals - periodic and aperiodic, Random signals, CT systems and DT systems, Classification of systems – Linear Time Invariant Systems.

UNIT II ANALYSIS OF CT SIGNALS 9
Fourier series analysis, Spectrum of CT signals, Fourier Transform and Laplace Transform in Signal Analysis.

UNIT III LTI-CT SYSTEMS 9
Differential equation, Block diagram representation, Impulse response, Convolution Integral, Frequency response, Fourier Methods and Laplace transforms in analysis, State equations and Matrix.

UNIT IV ANALYSIS OF DT SIGNALS 9
Spectrum of DT Signals, Discrete Time Fourier Transform (DTFT), Discrete Fourier Transform (DFT), Properties of Z-transform in signal analysis.

UNIT V LTI-DT SYSTEMS 9
Difference equations, Block diagram representation, Impulse response, Convolution SUM, Frequency response, FFT and Z-transform analysis, State variable equation and Matrix.
TUTORIAL 15
TOTAL : 60
TEXTBOOK
1. Alan V. Oppenheim, Alan S. Willsky with S.Hamid Nawab, “Signals & Systems”, Pearson / Prentice Hall of India Pvt. Ltd., 2003.

REFERENCES
1. K.Lindner, “Signals and Systems”, McGraw-Hill International, 1999.
2. Simon Haykin and Barry Van Veen, “Signals and Systems”, John Wiley & Sons, Inc., 1999.

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