Signals and systems everyday life, biomedical, instrumentation domestic and industries. Representations of Signals, Classifications of Signals Continuous time, Discrete time, comparison among Analog, Digital and Discrete Signals, Signal properties: periodicity, absolute integrability, determinism and stochastic character. Some special signals of importance: the unit step, the unit impulse, the sinusoid, and the complex exponential. System properties: linearity: additivity and homogeneity, shift-invariance, causality, stability, realizability. Examples.
The z-Transform for discrete time signals and systems, system functions, poles and zeros of systems and sequences, z-domain analysis.
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