ELEC 320: Signals and Linear Systems
Our goal in this course is to understand the basic analysis and design
techniques for signals and linear systems.
We will study both continuous-time and discrete-time signals and systems,
and we will learn to work in the time domain as well as various transform
The material in this course is fundamental to many areas of electrical
engineering, including communication systems, digital signal processing,
control systems, image processing, speech processing, biomedical signal
processing, analog and digital filter design, acoustics, radar, artificial
neural networks, and others.
The techniques that we study are general and also apply to other engineering
systems, including optical, mechanical, thermal, and chemical systems.
Instructor and Office Hours:
Richard J. Kozick
Office: Room 220 Dana
Phone: (717) 524-1129
FAX: (717) 524-1822
Tentative office hour schedule for Fall, 1998 is as follows:
(Refer to the
course home page for the most up-to-date office hours)
M 11:00 AM - 12:00 PM
T 1:30 PM - 2:30 PM
W 11:00 AM - 12:00 PM
R 11:00 AM - 12:00 PM
Other times by appointment -- please send
or call to arrange.
ELEC 220 (Analog Circuits) and MATH 212 (Differential Equations).
Edward W. Kamen and Bonnie S. Heck,
Fundamentals of Signals and Systems Using MATLAB,
Z.Z. Karu, Signals and Systems Made Ridiculously Simple,
ZiZi Press, Cambridge, MA, 1995.
B.D. Hahn, Essential MATLAB for Scientists and Engineers,
John Wiley & Sons, Inc., 1997.
Some students have found the Karu book to be a useful supplement to the
Karu presents a summary of the key ideas in signals and systems,
along with examples.
No assignments will explicitly refer to the Karu book.
It is made available to you as a supplement, if you choose to use it.
The Hahn book is an introduction to MATLAB,
which is a computer software package that is widely-used for signal
processing, system design, and many other engineering applications.
The recent availability of free MATLAB tutorials
along with the extensive on-line help facilities in MATLAB
may make the purchase of Hahn's book unnecessary.
Further information about the free MATLAB tutorials is available at
The library has many books that cover the topics of this course.
The titles usually contain the words ``linear systems'' or ``signals
Course Home Page:
The home page for the ELEC 320 course is located at the URL
It can also be accessed by following the link from
my home page at
The course home page contains the homework assignments,
and other course information.
Data files and sample MATLAB programs
will occasionally be posted on
the home page that you will download and use for homework and
The grading in this course will be objective, so that
you are not competing against one another for a limited number of
high grades. There is no ``curve'' that prescribes the number of
A's, B's, C's, etc. - it is possible for the entire class to earn A's.
The intent of this policy is to encourage cooperation among the class.
I hope everyone does well, and I hope we can all work together
to grow in our understanding of signals and systems concepts.
5 30-minute quizzes at 5% each 25%
Final exam 30%
Brief quizzes 5%
Labs and presentations 25%
Quizzes and Final Exam:
Instead of hourly exams, we will have five 30-minute quizzes throughout
Most of the quizzes will occur on a Wednesday,
and the dates for the
quizzes are listed on the tentative course outline below.
The course will conclude with a comprehensive final exam.
Short quizzes (announced or unannounced)
will also be given to check your understanding of
the material as we proceed through the course.
Missed quizzes cannot be made-up, but your lowest quiz grade will be dropped.
Homework will be assigned regularly.
It will be due at the beginning of class on the specified due date.
Late assignments will be accepted but
reduced in grade.
You are encouraged to work on the homework with groups of your classmates.
The purpose of the homework is to practice with the material and to
improve your understanding.
I encourage you to learn from each other, and also to ask me when you have
However, the homework solutions that you submit for grading
must be written individually .
Be sure that you understand the reasoning for each problem,
even if you initially solved the problem with help from your
Keep in mind that most of your grade in this course is determined by
exams and quizzes, which you will have to do by yourself.
Students will work in pairs on the labs for this course.
Some of the lab exercises will serve as illustrations of the course material,
will be design projects in which you choose the topic.
You will be asked to write a lab report and/or present your project
to the class.
I recommend that you keep a lab notebook for this course, but I will not
collect your notebooks.
The lab notebook will serve two purposes.
First, it is a good way to organize the notes and data that you'll need to
prepare the lab report.
Second, it provides a good reference for future labs that you can use
to remember how to perform certain operations with the instruments.
The corresponding chapters in the Kamen/Heck text and the quiz dates
- Week 1:
Review of EE 102 and ELEC 220: impedance, phasors, amplifiers, filters, frequency response.
Analysis, design, and experimental validation of
- Weeks 2-3: (Chapter 1)
Signals, systems, and classification of systems (linear, time-invariant, causal).
Quiz 1: Wednesday, September 9, 1998
*** QUIZ 1 CHANGED TO FRIDAY, SEPTEMBER 11, 1998
- Weeks 4-6: (Chapters 2 and 3)
Modeling systems in the time domain: differential and difference equations.
Convolution: how to do it, why it works, and why it is significant.
Applications of convolution to data communication systems.
Matched filters for data communication in the presence of noise.
Quiz 2: Wednesday, October 7, 1998
- Week 7: (Chapters 4 and 5)
signal analysis with the Fourier series and Fourier transform.
Applications to filtering.
Lab: Real-time spectral analysis with the FFT.
- Fall Recess:
Begins Friday, October 9 at 5 PM and ends Wednesday, October 14 at 8 AM.
- Weeks 8-9: (Chapters 4 and 5)
Continue with theory and applications of the Fourier transform.
Applications to analog modulation and digital communication systems.
Lab: Sampling, aliasing, and digital signal processing.
Quiz 3: Wednesday, October 28, 1998
- Weeks 9-10: (Chapters 5 and 6)
The sampling theorem, reconstruction of continuous-time signals
from discrete-time samples, basic concepts of Fourier analysis
of discrete-time signals (DFT and FFT algorithms).
Lab: Design project.
Quiz 4: Wednesday, November 11, 1998
*** QUIZ 4 CHANGED TO FRIDAY, NOVEMBER 13, 1998
- Weeks 11-13: (Chapters 7 and 8)
Laplace transform: partial fractions, solving differential equations.
Applications to linear systems: poles, zeros, block diagrams,
transfer functions, stability, frequency response.
Quiz 5: Monday, November 23, 1998
*** QUIZ 5 CHANGED TO WEDNESDAY, DECEMBER 2, 1998
- Thanksgiving Recess:
Begins Tuesday, November 24 at 10 PM and ends Monday, November 30 at 8 AM.
- Week 14: (Chapter 10)
Basic idea of the Z transform and its application to discrete-time systems.