Chapter 3

Discrete-Time Signals and Systems

Leonardo G. Baltar and Josef A. Nossek,    Institute for Circuit Theory and Signal Processing, Technische Universität München, München, Germany, leo.baltar@tum.de, josef.a.nossek@tum.de

Abstract

In this chapter we will investigate the fundamental topic of discrete-time signals and systems. We first introduce some basic and useful discrete-time signals, like the unit impulse, the sinusoidal and white Gaussian random sequences. Then we define and represent discrete-time systems. We give some criteria with which these systems can be classified. Then for the important class of linear time-invariant (LTI) systems we focus on the state-space description that will form the basis for the analysis on following ...

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