Signal and Linear Systems (Third Edition) (Volume 1)

Author: Guan Zhizhong, Xia Gongke
Publisher:
Publication 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 four-year programs in communication and electronic engineering for the "Signals and Systems" course, and can also be referenced by relevant technical personnel. The new edition includes all the content of the original edition, and naturally covers the basic requirements for the "Signals and Systems" course for higher vocational colleges issued by the State Education Commission. 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. This book also reselected most of the exercises from the original book to make them more aligned with teaching requirements. Some minor adjustments and additions were made to individual content. This is because actual information-bearing signals are inherently unpredictable and random, and considering the increasing importance of detecting and analyzing weak signals with the development of electronic science and 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 has also become necessary for students in other non-communication disciplines, and will become an important part of the professional basic knowledge for scientific and technological workers. Non-communication disciplines generally do not offer a course on random signal analysis in subsequent courses. To provide these students with some basic knowledge in this area, this section, which is not included in the basic requirements of the course, has been added, allowing each school to decide whether to adopt it based on its teaching arrangements. "Signals and Systems" is an "open-ended" foundational theory 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. 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 example, topics such as unilateral spectra and Hilbert transform, bilateral Laplace transform, stability criteria for discrete systems, 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 questions involved complex calculations. This time, a significant number of exercises were added and deleted to better meet teaching requirements.