Oppenheim Alan V., Willsky Alan S., Young Ian T. Signals and Systems

Prentice Hall, 1982. — 796 p. — (Prentice Hall Signal Processing Series).This book is designed as a text for an undergraduate course in signals and systems. While such courses are frequently found in electrical engineering curricula, the concepts and techniques that form the core of the subject are of fundamental importance in all engineering disciplines. In fact the scope of potential and actual applications of the methods of signal and system analysis continues to expand as engineers are confronted with new challenges involving the synthesis or analysis of complex processes. For these reasons we feel that a course in signals and systems not only is an essential element in an engineering program but also can be one of the most rewarding, exciting, and useful courses that engineering students take during their undergraduate education.
Our treatment of the subject of signals and systems is based on lecture notes that were developed in teaching a first course on this topic in the Department of Electrical Engineering and Computer Science at M.I.T. Our overall approach to the topic has been guided by the fact that with the recent and anticipated developments in technologies for signal and system design and implementation, the importance of having equal familiarity with techniques suitable for analyzing and synthesizing both continuous-time and discrete-time systems has increased dramatically. To achieve this goal we have chosen to develop in parallel the methods of analysis for continuous-time and discrete-time signals and systems. This approach also offers a distinct and extremely important pedagogical advantage. Specifically, we are able to draw on the similarities between continuous- and discrete-time methods in order to share insights and intuition developed in each domain. Similarly, we can exploit the differences between them to sharpen an understanding of the distinct properties of each.