课程简介

­通 信 工 程 专 业 主干 课 程 简 介

( Brief Introduction to the MajorCourses of Communication Engineering)

课 程 名 称

信号与系统

学 分(Credits)

 

 Course Name

Signals and Systems

学 时(Hours)

 

课程简介(300字以内)

1.课程简介

本课程是电子信息类各专业的学科平台课程,主要介绍连续信号和系统的基本概念,介绍连续信号和系统的时域与频域分析方法和理论。课程以微积分,微分方程和电路分析为基础,主要涉及连续时间信号与系统的基本原理,信号的时域及频域分析方法,系统的时域及频域分析方法,采样理论,频率响应,傅里叶变换,拉普拉斯变换和特殊系统应用等内容。

 

2.课程课表

星期一,5-6节,1407

星期五,1-2节,1308

 

3.主讲教师

1)、高宝建,副教授

办公室:10#-620

电邮:405686893@qq.com

2)、侯榆青,教授

办公室:10#-816

电邮:houyuqin@nwu.edu.cn

3)、王宾,讲师

办公室:10#-618

电邮:wbin20@126.com

 

4.课程教材

书名:信号与系统

作者:潘建寿,高宝建

出版社:清华大学出版社

 

5.参考书目

1)信号与线性系统分析,吴大正等,高等教育出版社,第四版。

2)信号与系统,郑君里等,高等教育出版社。

3Discrete-time Signal Processing, A.V. Oppenheim, Prentice Hall, 3rd Edition.

 

6.讲授内容

1讲:绪论

2讲:连续时间信号的属性,描述及分类,常用基本信号

3讲:连续时间系统的属性,描述及分类,线性时不变系统

4讲:系统的微分方程,微分方程的求解

5讲:周期信号的傅里叶级数

6讲:周期与非周期信号的傅里叶变换

7讲:系统的频率响应,系统的频域分析,时域采样和频域采样

8讲:时分复用,无失真传输系统,理想滤波器和可实现滤波器

9讲:频分复用,调制解调,希尔伯特变换

10讲:拉普拉斯变换,拉普拉斯变换的收敛域

11讲:拉普拉斯变换的性质,拉普拉斯变换与傅里叶变换的关系

12讲:常用信号的拉普拉斯变换,拉普拉斯变换的逆变换

13讲:系统函数,系统的复频域分析方法

14讲:系统函数的零极点分布与系统的时域和频域特征的关系,信号流图与梅森规则

15讲:系统函数的零极点分布与系统稳定性的关系,罗斯准则

16讲:全通系统,最小相位系统和波特图

17讲:窗口傅里叶变换,时-频分析

18讲:小波变换和多分辨率分析

 

7.考核办法

本课程考核范围主要包括平时成绩,期中成绩和期末成绩三部分,各部分所占比例如下:

平时成绩占20%,期中成绩占20%,期末成绩占60%

平时成绩、期中成绩和期末成绩均按百分制计分,最终成绩计算方法如下:

平时成绩*20%+期中成绩*20%+期末成绩*60%

 

8.注意事项

1)严禁无故旷课,请假需出示正规假条。

2)平时作业过期不再接收。

3)到课情况及学习态度会以计入平时成绩。

4)上课时请关闭手机或将手机静音。

 

Course Description

1. Description

As a basic disciplinary course, Signals and System introduces the basic concepts of continuous signals and systems, and the analysis and theories of time domain and frequency domain. Based on calculus, differential equations, and circuit analysis, the course touches upon the fundamental principles of continuous time signals and systems, the analysis of time domain and frequency domain of both signals and systems respectively, sampling, frequency response, Fourier transform, Laplace transform, and the application of special systems.

 

2. Class Meeting

Monday         14:00-16:00   1407

Friday            8:00-10:00      1308

 

3. Instructors

(1) Professor GAO Baojian

Office: 10#-620

Email: gaobj@nwu.edu.cn

(2) Professor HOU Yuqing

Office: 10#-816

Email: houyuqin@nwu.edu.cn

(3) WANG Bin

Office: 10#-618

Email: wbin20@126.com

 

4. Textbook

Title: Signals and Systems

Author: PAN Jianshou & GAO Baojian

Publisher: Tsinghua University Press

 

5. References

(1) WU, Dazheng. Signal and Linear System Analysis (4th Edition). Higher Education Press.

(2) ZHENG, JunLi. Signals and Systems. Higher Education Press.

(3) Oppenheim, A.V. Discrete-time Signal Processing (2nd Edition). Prentice Hall.

 

6. Topics

Lecture 1 Introduction

Lecture 2 Properties, Description and Classification of Continuous-Time Signals & Typical Signals

Lecture 3 Properties, Description and Classification of Continuous-Time Systems & LTI System

Lecture 4 Systems Described by Differential Equations and Their Solutions

Lecture 5 The Continuous-Time Fourier Series of Periodic Signals

Lecture 6 The Continuous-Time Fourier Transform of Non-Periodic Signals and Periodic Signals

Lecture 7 The Frequency Response of Systems, Analysis of Frequency Domain of Systems, Time Domain Sampling & Frequency Domain Sampling

Lecture 8 Time Division Multiplexing, Non-Distortion Transmission System, Ideal Filters & Realizable Filters

Lecture 9 Frequency Division multiplexing, Continuous-Time Sinusoidal Amplitude Modulation &

Hilbert Transform

Lecture 10 Laplace Transform & Its Convergence Region

Lecture 11 Properties of Laplace Transform & Relation Between Fourier Transform and Laplace Transform

Lecture 12 Laplace Transform of Typical Signals & Inverse Laplace Transform

Lecture 13 System Functions & Analysis of Complex Frequency Domain of Systems

Lecture 14 Relation Between Zero Pole Distribution of System Functions & Characteristics of Time Domain and Frequency Domain of Systems, Signal Flow Graph, and The Masson Rule

Lecture 15 Relation Between Zero Pole Distribution of System Functions & the Stability of Systems, the Ross Rule

Lecture 16 All Pass System, Minimum Phase Systems and Potter Diagram

Lecture 17 Windowed Fourier Transform & Time Frequency Analysis

Lecture 18 Wavelet Transform & Multi-resolution Analysis

 

7. Grading

The final score is composed of students’ performance in a midterm exam, a comprehensive two-hour final exam and their class participation in assessment. The percentage of each part is as follows:

Class Performance 20%, Midterm Exam 20%, Final Exam 60%

 

8. Policy

(1) No absence is allowed unless you have an official document such as a police report for a car accident, or a note signed by a doctor for illness.

(2) Late assignments will not be accepted.

(3) Students are expected to attend all classes. 10% of the total grade is at the instructor’s discretion and will be based on the attendance and class participation.

(4) Turn off your cellular phone or pager if any.