信号与系统

CHAPTER 1 Introduction

1.1 What Is a Signal？

1.2 What Is a System？

1.3 Overview of Specific Systems

1.4 Classification of Signals

1.5 Basic Operations on Signals

1.6 Elementary Signals

1.7 Systems Viewed as Interconnections of Operations

1.8 Properties of Systems

1.9 Noise

1.10 Theme Examples

1.11 Exploring Concepts with MATLAB

1.12 Summary

Further Reading

Additional Problems

CHAPTER 2 Time-Domain Representations of Linear Time-Invariant Systems

2.1 Introduction

2.2 The Convolution Sum

2.3 Convolution Sum Evaluation Procedure

2.4 The Convolution Integral

2.5 Convolution Integral Evaluation Procedure

2.6 Interconnections of LTI Systems

2.7 Relations between LTI System Properties and the Impulse Response

2.8 Step Response

2.9 Differential and Difference Equation Representations of LTI Systems

2.10 Solving Differential and Difference Equations

2.11 Characteristics of Systems Described by Differential and Difference Equations

2.12 Block Diagram Representations

2.13 State-Variable Descriptions of LTI Systems

2.14 Exploring Concepts with MATLAB

2.15 Summary

Further Reading

Additional Problems

CHAPTER 3 Fourier Representations of Signals and Linear Time-Invariant Systems

3.1 Introduction

3.2 Complex Sinusoids and Frequency Response of LTI Systems

3.3 Fourier Representations for Four Classes of Signals

3.4 Discrete-Time Periodic Signals: The Discrete-Time Fourier Series

3.5 Continuous-Time Periodic Signals: The Fourier Series

3.6 Discrete-Time Nonperiodic Signals: The Discrete-Time Fourier Transform

3.7 Continuous-Time Nonperiodic Signals: The Fourier Transform

3.8 Properties of Fourier Representations

3.9 Linearity and Symmetry Properties

3.10 Convolution Property

3.11 Differentiation and Integration Properties

3.12 Time- and Frequency-Shift Properties

3.13 Finding Inyerse Fourier Transforms by Using Partial-Fraction Expansions

3,14 Multiplication Property

3.15 Scaling Properties

3.16 Parseval Relationships

3.17 Time-Bandwidth Product

3.18 Duality

3.19 Exploring Concepts with MATLAB

3.20 Summary

Further Reading

Additional Problems

CHAPTER 4 Applications of Fourier Representations to Mixed Signal Classes

4.1 Introduction

4.2 Fourier Transform Representations of Periodic Signals

4.3 Convolution and Multiplication with Mixtures of Periodic and Nonperiodic Signals

4.4 Fourier Transform Representation of Discrete-Time Signals

4.5 Sampling

4.6 Reconstruction of Continuous-Time Signals from Samples

4.7 Discrete-Time Processing of Continuous-Time Signals

4.8 Fourier Series Representations of Finite-Durarion Nonperiodic Signals

4.9 The Discrete-Time Fourier Series Approximation to the Fourier Transform

4.10 Efficient Algorithms for Evaluating the DTFS

4.11 Exploring Concepts with MATLAB

4.12 Summary

Further Reading

Additional Problems

CHAPTER 5 Application to Communication Systems

5.1 Introduction

5.2 Types of Modulation

5.3 Benefits of Modulation

5.4 Full Amplitude Modulation

5.5 Double Sideband-Suppressed Carrier Modulation

5.6 Quadrature-Carrier Multiplexing

5.7 Other Variants of Amplitude Modulation

5.8 Pulse-Amplitude Modulation

5.9 Multiplexing

5.10 Phase and Group Delays

5.11 Exploring Concepts with MATLAB

5.12 Summary

Further Reading

Additional Problems

CHAPTER 6 Representing Signals by Using Continuous-Time Complex Exponentials: the Laplace Transform

6.1 Introduction

6.2 The Laplace Transform

6.3 The Unilateral Laplace Transform

6.4 Properties of the Unilateral Laplace Transform

6.5 Inversion of the Unilateral Laplace Transform

6.6 Solving Differential Equations with Initial Conditions

6.7 Laplace Transform Methods in Circuit Analysis

6.8 Properties of the Bilateral Laplace Transform

6.9 Properties of the Region of Convergence

6.10 Inversion of the Bilateral Laplace Transform

6.11 The Transfer Function

6.12 Causality and Stability

6.13 Determining the Frequency Response from Poles and Zeros

6.14 Exploring Concepts with MATLAB

6.15 Summary

Further Reading

Additional Problems

CHAPTER 7 Representing Signals by Using Discrete-Time Complex Exponentials: the z-Transform

7.1 Introduction

7.2 The z-Transform

7.3 Properties of the Region of Convergence

7.4 Properties of the z-Transform

7.5 Inversion of the z-Transform

7.6 The Transfer Function

7.7 Causality and Stability

7.8 Determining the Frequency Response from Poles and Zeros

7.9 Computational Structures for Implementing Discrete-Time LTI Systems

7.10 The Unilateral z-Transform

7.11 Exploring Concepts with MATLAB

7.12 Summary

Further Reading

Additional Problems

CHAPTER 8 Application to Filters and Equalizers

8.1 Introduction

8.2 Conditions for Distortionless Transmission

8.3 Ideal Low-Pass Filters

8.4 Design of Filters

8.5 Approximating Functions

8.6 Frequency Transformations

8.7 Passive Filters

8.8 Digital Filters

8.9 FIR Digital Filters

8.10 IIR Digital Filters

8.11 Linear Distortion

8.12 Equalization

8.13 Exploring Concepts with MATLAB

8.14 Summary

Further Reading

Additional Problems

CHAPTER 9 Application to Linear Feedback Systems

9.1 Introduction

9.2 What Is Feedback？

9.3 Basic Feedback Concepts

9.4 Sensitivity Analysis

9.5 Effect of Feedback on Disturbance or Noise

9.6 Distortion Analysis

9.7 Summarizing Remarks on Feedback

9.8 Operational Amplifiers

9.9 Control Systems

9.10 Transient Response of Low-Order Systems

9.11 The Stability Problem

9.12 Routh-Hurwitz Criterion

9.13 Root Locus Method

9.14 Nyquist Stability Criterion

9.15 Bode Diagram

9.16 Sampled-Data Systems

9.17 Exploring Concepts with MATLAB

9.18 Summary

Further Reading

Additional Problems

……

CHAPTER 10 Epilogue

APPENDIX A Selected Mathematical Identities

APPENDIX B Partial-Fraction Expansions

APPENDIX C Tables of Fourier Representations and Properties

APPENDIX D Tables of Laplace Transforms and Properties

APPENDIX E Tables of z-Tansforms and Properties

APPENDIX F Introduction to MATLAB

INDEX

《国外电子与通信教材系列：信号与系统（第2版）（英文版）》全面系统地介绍了信号与系统的基本概念、理论、方法及应用。全书共10章。介绍了信号与系统的基本概念；讨论了线性时不变系统的时域分析方法；讨论了离散时间周期与非周期信号、连续时间周期与非周期信号，以及线性时不变系统的傅里叶描述及傅里叶描述在混合信号类型中的应用。

《国外电子与通信教材系列：信号与系统（第2版）（英文版）》各章都有用MATLAB语言解题的内容、参考资料及进一步的阅读材料，并配有相当数量的例题。通过书中大量的各类习题和计算机实验题，能够使读者开阔视野，为读者提供了足够的训练空间。