### 基本信息

- 原书名：Signals, Systems, and Transforms (4th Edition)
- 原出版社： Prentice Hall

- 作者：
**(美)Charles L Phillips****John M. Parr****Eve A. Riskin** - 丛书名：
**经典原版书库** - 出版社：机械工业出版社
- ISBN：
**9787111268949** - 上架时间：2010-11-19
- 出版日期：2009 年5月
- 开本：32开
- 页码：772
- 版次：4-1
- 所属分类：通信 > 通信技术理论与基础

### 内容简介

通信书籍

本书对关于信号、系统和变换的理论与应用进行了清晰而全面的阐述，介绍了有关信号与系统的数学背景知识，主要包括：傅里叶变换、傅里叶级数、拉普拉斯变换、离散时间，离散傅里叶变换以及z变换等。本版在课程体系的组织上可以灵活地应对读者的不同侧重需求。MATLAB示例贯穿于全书各章，同时MATLAB学生版本的高级功能也在例题和习题的应用中有所体现。.

交互式网站www．ee．washington．edu／class／SST_textbook／textbook．html提供了大量的示例和动画演示。

全书包含了350多道习题和150多道例题。给出的习题答案可使读者获得关于新概念理解的即时反馈。

第4版中的显著变化

·概念的表述更为清晰。..

·第3章对卷积的介绍更为简练。

·第12章对上一版关于离散傅里叶变换的介绍进行了拓展。

·对大部分章节的习题进行了修订。与同一个概念相关的习题放在一组，附录中为每组习题至少提供一道习题的参考答案。

·在教材的相关章节中增加了信号与系统分析领域的名人的传记资料。...

### 作译者

John M．Parr现任教于艾温斯维尔大学。..

Eve A．Riskin分别于1985年和1986年获斯坦福大学电气工程和运筹学硕士学位，1990年获斯坦福大学电气工程博士学位，现为华盛顿大学工程学院教授。...

### 目录

1 INTRODUCTION

1.1 Modeling

1.2 Continuous-Time Physical Systems

1.3 Samplers and Discrete-Time Physical Systems

1.4 MATLAB and SIMULINK

2 CONTINUOUS-TIME SIGNALS AND SYSTEMS

2.1 Transformations of Continuous-Time Signals

2.2 Signal Characteristics

2.3 Common Signals in Engineering

2.4 Singularity Functions

2.5 Mathematical Functions for Signals

2.6 Continuous-Time Systems

2.7 Properties of Continuous-Time Systems

3 CONTINUOUS-TIME LINEAR TIME-INVARIANT SYSTEMS

3.1 Impulse Representation of Continuous-Time Signals

3.2 Convolution for Continuous-Time LTl Systems

3.3 Properties of Convolution

3.4 Properties of Continuous-Time LTl Systems

3.5 Differential-Equation Models

### 前言

Many end-of-chapter problems have been revised and numerous new problems are provided. Several of these new problems illustrate real-world concepts in digital communications, filtering, and control theory. The end-of-chapter problems have been organized so that multiple similar problems are provided. The answer to at least one of each set of similar problems is provided in Appendix H. The intent is to allow students to develop confidence by gaining immediate feedback about their understanding of new material and concepts. All MATLAB examples have been updated to ensure compatibility with the Student Version Release 14.

A companion web site at http://www.ee.washington.edu/class/SST_textbook/textbook.html contains sample laboratories, lecture notes for Chapters 1-7 and Chapters 9-12, and the MATLAB files listed in the textbook as well as several additional MATLAB files. It also contains a link to a second web site at http://www.ee.washington.edu/class/235dl/, which contains interactive versions of the lecture notes for Chapters 1-7. Here, students and professors can find workedout solutions to all the examples in the lecture notes, as well as animated demonstrations of various concepts including transformations of continuous-time signals, properties of continuous-time systems (including numerous examples on time-invariance), convolution, sampling, and aliasing. Additional examples for discrete-time material will be added as they are developed.

This book is intended to be used primarily as a text for junior-level students in engineering curricula and for self-study by practicing engineers. It is assumed that the reader has had some introduction to signal models, system models, and differential equations (as in, for example, circuits courses and courses in mathematics), and some laboratory work with physical systems.

The authors have attempted to consistently differentiate between signal and system models and physical signals and systems. Although a true understanding of this difference can be acquired only through experience, readers should understand that there are usually significant differences in performance between physical systems and their mathematical models.

We have attempted to relate the mathematical results to physical systems that are familiar to the readers (for example, the simple pendulum) or physical systems that students can visualize (for example, a picture in a picture for television). The descriptions of these physical systems, given in Chapter 1, are not complete in any sense of the word; these systems are introduced simply to illustrate practical applications of the mathematical procedures presented.

Generally, practicing engineers must, in some manner, validate their work. To introduce the topic of validation, the results of examples are verified, using different procedures, where practical. Many homework problems require verification of the results. Hence, students become familiar with the process of validating their own work.

The software tool MATLAB is integrated into the text in two ways. First, in appropriate examples, MATLAB programs are provided that will verify the computations. Then, in appropriate homework problems, the student is asked to verify the calculations using MATLAB. This verification should not be difficult because MATLAB programs given in examples similar to the problems are applicable. Hence, another procedure for verification is given. The MATLAB programs given in the examples may be downloaded from http://www.ee.washington.edu/class/SST_textbook/textbook.html. Students can alter data statements in these programs to apply them to the end-of-chapter problems. This should minimize programming errors. Hence, another procedure for verification is given. However, all references to MATLAB may be omitted, if the instructor or reader so desires.

Laplace transforms are covered in Chapter 7 and z-transforms are covered in Chapter 11. At many universities, one or both transforms are introduced prior to the signals and systems courses. Chapters 7 and 11 are written such that the material can be covered anywhere in the signals and systems course, or they can be omitted entirely, except for required references.

The more advanced material has been placed toward the end of the chapters wherever possible. Hence, this material may be omitted if desired. For example, Sections 3.7, 3.8, 4.6, 5.5, 7.9,10.7, 12.6, 12.7, and 12.8 could be omitted by instructors without loss of continuity in teaching. Further, Chapters 8 and 13 can be skipped if a professor does not wish to cover state-space material at the undergraduate level. ..

The material of this book is organized into two principal areas: continuoustime signals and systems, and discrete-time signals and systems. Some professors prefer to cover first one of these topics, followed by the second. Other professors prefer to cover continuous-time material and discrete-time material simultaneously. The authors have taken the first approach, with the continuous-time material covered in Chapters 2-8, and the discrete-time material covered in Chapters 9-13. The material on discrete4ime concepts is essentially independent of the material on continuous-time concepts so that a professor or reader who desires to study the discrete-time material first could cover Chapters %11 and 13 before Chapters 2-8. The material may also be arranged such that basic continuous4ime material and discrete-time material are intermixed. For example, Chapters 2 and 9 may be covered simultaneously and Chapters 3 and 10 may also be covered simultaneously.

In Chapter 1, we present a brief introduction to signals and systems, followed by short descriptions of several physical continuous-time and discrete-time systems. In addition, some of the signals that appear in these systems are described. Then a very brief introduction to MATLAB is given.

In Chapter 2, we present general material basic to continuous-time signals and systems; the same material for discrete-time signals and systems is presented in Chapter 9. However, as stated above, Chapter 9 can be covered before Chapter 2 or simultaneously with Chapter 2. Chapter 3 extends this basic material to continuoustime linear time-invariant systems, while Chapter 10 does the same for discrete-time linear time-invariant systems.

Presented in Chapters 4, 5, and 6 are the Fourier series and the Fourier transform for continuous-time signals and systems. The Laplace transform is then developed in Chapter 7. State variables for continuous-time systems are covered in Chapter 8; this development utilizes the Laplace transform.

The z-transform is developed in Chapter 11, with the discrete-time Fourier transform and the discrete Fourier transform presented in Chapter 12. However, Chapter 12 may be covered prior to Chapter 11. The development of the discretetime Fourier transform and discrete Fourier transform in Chapter 12 assumes that the reader is familiar with the Fourier transform. State variables for discrete-time systems are given in Chapter 13. This material is independent of the state variables for continuous-time systems of Chapter 8.

In Appendix A, we give some useful integrals and trigonometric identities. In general, the table of integrals is used in the book, rather than taking the longer approach of integration by parts. Leibnitz's rule for the differentiation of an integral and L'H6pital's rule for indeterminate forms are given in Appendix B and are referenced in the text where needed. Appendix C covers the closed forms for certain geometric series; this material is useful in discrete-time signals and systems. In Appendix D, we review complex numbers and introduce Euler's relation, in Appendix E the solution of linear differential equations with constant coefficients, and in Appendix F partial-fraction expansions. Matrices are reviewed in Appendix G; this appendix is required for the state-variable coverage of Chapters 8 and 13. As each matrix operation is defined, MATLAB statements that perform the operation are given. Appendix H provides solutions to selected chapter problems so that students can check their work independently. Appendix I lists the references for the entire text, arranged by chapter.

This book may be covered in its entirety in two 3-semester-hour courses, or in quarter courses of approximately the equivalent of 6 semester hours. With the omission of appropriate material, the remaining parts of the book may be covered with fewer credits. For example, most of the material of Chapters 2, 3, 4, 5, 6, 8, 9, 10, 11 and 12 has been covered in one 4-semester-hour course. The students were already amiliar with some linear-system analysis and the Laplace transform.

We wish to acknowledge the many colleagues and students at Auburn University, the University of Evansville, and the University of Washington who have contributed to the development of this book. In particular, the first author wishes to express thanks to Professors Charles M. Gross, Martial A. Honneil, and Charles L. Rogers of Auburn University for many stimulating discussions on the topics in this book, and to Professor Roger Webb, director of the School of Electrical Engineering at the Georgia Institute of Technology, for the opportunity to teach the signal and system courses at Georgia Tech. The second author wishes to thank Professors Dick Blandford and William Thayer for their encouragement and support for this effort, and Professor David Mitchell for his enthusiastic discussions of the subject matter. The third author wishes to thank the professors and many students in EE235 and EE341 at the University of Washington who contributed comments to this book and interactive web site, in particular Professors Mari Ostendorf and Mani Soma, Eddy Ferrr, Wai Shah Lau, Bee Ngo, Sanaz Namdar, Jessica Tsao, and Anna Margolis. We would like to thank the reviewers who provided invaluable comments and suggestions. They are Leslie M. Collins, Duke University; William Eads, Colorado State University; Aleksandar Dogandzic, Iowa State University; and Bruce Eisenstein, Drexel University. The interactive web site was developed under a grant from the Fund for the Improvement of Postsecondary Education (FIPSE), U.S. Department of Education. ...

CHARLES L. PHILLIPS

Auburn University

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