Review of Signals and Systems
This appendix provides a summary of some important results in the area of signal representation and linear time invariant systems. Any engineering student embarking on a serious study of probability and random processes should be familiar with these concepts and hence a rigorous development is not attempted here. Rather, this review is intended as a brief refresher for those who need it and also as a quick reference for some important results that are used throughout the text. In this appendix, attention is focused on deterministic signals and systems in both continuous and discrete time.
Definition C.1: Consider a periodic signal x(t) whose period is To . That is, x(t) = x(t + To ) for all t. The inverse ...