EC3354 Signals and Systems Notes - Anna University Regulation 2021

About EC3354 Signals and Systems

EC3354 is a core subject for Anna University Semester 3 students, focusing on the analysis and classification of signals and systems in both continuous and discrete time. The subject covers signal types, system properties, Fourier and Laplace analysis, convolution, and transforms. These EC3354 notes are designed to help you master the mathematical foundations and practical applications of signals and systems for both internal assessments and university exams.

EC3354 Important Topics (Unit-wise)

These are the most important unit-wise topics for EC3354 (Signals and Systems - R2021). Practice these topics regularly to strengthen core concepts and improve exam performance.

Unit I – Classification of Signals and Systems

• Classification of signals (Energy vs Power, Periodic vs Aperiodic)
• Classification of systems (Linear, Time-invariant, Causal, Stable)
• Standard signals (step, impulse, ramp, sinusoidal) with properties

Unit II – Continuous Time Signal Analysis

• Fourier Series (derivation + properties)
• Fourier Transform (properties and applications)
• Laplace Transform (properties + region of convergence)

Unit III – Continuous Time LTI Systems

• Convolution integral (problems + derivation)
• Impulse response and system representation
• Differential equation modeling of systems
• Analysis using Fourier and Laplace transforms

Unit IV – Discrete Time Signal Analysis

• Sampling theorem (concept + applications)
• Discrete Time Fourier Transform (DTFT) properties
• Z-Transform (properties + region of convergence)

Unit V – Discrete Time LTI Systems

• Convolution sum (problems)
• Difference equations and system representation
• Discrete Fourier Transform (basic analysis)
• Z-Transform in system analysis
• Recursive and Non-recursive systems