Signal and Linear Systems (Third Edition), Volume 1

Author: Guan Zhizhong
Publisher:
Publish Date: 1992-09-04
Features: This book is a revised edition of the book Signals and Linear Systems published in 1982. It is published in two volumes. The first volume includes Introduction, Time-Domain Analysis of Continuous-Time Systems, Signal Analysis, Frequency-Domain Analysis of Continuous-Time Systems, Complex Frequency-Domain Analysis of Continuous-Time Systems, and System Functions of Continuous-Time Systems. The second volume includes Time-Domain Analysis of Discrete-Time Systems, Transform-Domain Analysis of Discrete-Time Systems, State-Space Analysis of Linear Systems, Random Variables, Random Processes, and Responses of Linear Systems to Random Inputs. This book can be used as a textbook for "Signals and Systems" courses in four-year programs in communication and electronic engineering, and can also be referenced by relevant technical personnel. The new edition includes all the content of the original edition and also covers the basic requirements for teaching "Signals and Systems" courses issued by the State Education Commission for higher vocational colleges. Compared to the original version, the main changes are the addition of three chapters on random variables, random processes, and random signals passing through linear systems. The book also reselected most of the exercises from the original, making them more aligned with teaching requirements. Minor adjustments and additions were made to some content. This is because actual signals carrying information are inherently unpredictable and random, and considering the increasing importance of detecting and analyzing weak signals with the development of electronic technology, noise backgrounds are often not ignorable in practical problems. As a result, the theoretical knowledge of random processes and probability methods required for communication engineering students in the past is now also needed by students from other non-communication disciplines and has become an important part of the professional basic knowledge for scientific and technological workers. Non-communication disciplines generally do not offer separate courses on random signal analysis in subsequent courses. To provide these students with some foundational knowledge in this area, this additional content, which is not included in the basic requirements, has been added so that each school can decide whether to adopt it based on its teaching arrangements. Signals and Systems is an "open-ended" foundational theoretical course, where each part of the content can be deepened and expanded based on professional needs. For example, the z-domain analysis of discrete signals can be extended to digital signal processing, complex frequency-domain analysis can be extended to network synthesis, and state-space analysis can be extended to state control, etc. The added random signal analysis in this book can also be extended to communication theory. In addition to the added content on random signal analysis, there are also minor additions and deletions in other chapters. For instance, topics such as unilateral spectra and Hilbert transform, bilateral Laplace transform, stability criteria for discrete systems, and observability and controllability of systems have been added to make the systematic completeness of the entire book more complete. At the same time, some inappropriate statements in the original book have also been corrected accordingly. The exercises selected in the original book were not closely aligned with the main content, and some of the problems were computationally complex. This time, the exercises were significantly added and deleted to better meet teaching requirements.