ELEC 470 / 670
Digital and Analog Communication Systems
Our goal is to understand the basic principles
that are used in the analysis and design of
analog and digital communication systems.
The material that we discuss in this course is fundamental
to every modern communication system, including AM and
FM radio, television, digital audio and video,
telecommunications, wireless communication, modems,
optical fiber communication, and many others.
We will also examine current issues in the rapidly changing
field of communications.
MWF 9:00-10:00 AM in Dana 305 or Dana 350 (Sun lab).
Instructor and Office Hours:
Richard J. Kozick
Office: Room 220 Dana
Phone: (717) 524-1129
FAX: (717) 524-1822
Tentative office hour schedule for Spring, 1998 is as follows:
(Refer to the
course home page for the most up-to-date schedule)
MWF 3:00 PM - 4:00 PM
Other times by appointment -- please send
or call to arrange.
ELEC 320 or undergraduate course in signals and linear systems.
Simon Haykin, Communication Systems (Third Edition), Wiley, 1994.
We will make use of the Communications Toolbox
that is available on the Sun computers.
Several on-line tutorials for MATLAB and the Sun computers
course home page.
The tutorials can be accessed directly at
The library has many books on communication systems.
good source for current topics is the IEEE Communications
Magazine, which is available in the library.
Course Home Page:
The home page for the ELEC 470 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,
links to Web pages related to communications,
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 communication systems.
Graduate students will receive additional assignments that treat some
topics in greater detail. Final grades for the course will be computed
2 exams at 15% each 30%
Final exam 25%
Quizzes and class participation 10%
Exams and Quizzes:
Two in-class exams will be given during the semester, on the following
Wednesday, February 18, 1998 and Monday, March 30, 1998
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.
On some assignments, only a subset of the problems will be graded.
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.
We will work on one or more design projects during the semester in order
to gain a better understanding of communication systems.
Projects may include reading current literature, designing
and simulating systems in
MATLAB and Simulink, and real-time
implementations using the dSPACE digital signal processors in the
Dana 129 lab.
More details about the projects will be provided as the semester progresses.
The following is a tentative list of topics for the course.
The corresponding chapters in the text and the exam dates
Introduction and Review of Signals and Systems
We will try to relate the basic principles to communication
drawn from radio and television broadcasting,
telecommunications, wireless communication, modem design,
- Weeks 1-2:
Introduction to the course.
Chapter 1: Communication system, modulation, analog vs. digital
Chapter 2: Review of Fourier transform, linear systems, filters, etc.
Analog Communication Systems
- Weeks 3-5:
Chapter 3: Amplitude modulation (AM) and its variants,
frequency-division multiplexing (FDM),
angle modulation (FM and PM), phased-locked loop,
Application to broadcast radio and television.
Chapter 5: Overview of noise effects in AM and FM systems.
Exam 1: Wednesday, February 18.
Digital Communication Systems
- Weeks 6-8:
Sampling, pulse-amplitude modulation, time-division multiplexing (TDM),
quantization, pulse-code modulation (PCM), speech coding.
- Spring Recess:
Begins Friday, March 13 at 5 PM and ends Monday, March 23 at 8 AM.
- Weeks 9-10:
Chapter 7 (transmission of baseband pulses):
matched filter, intersymbol interference,
channel equalization, adaptive equalizer.
- Exam 2: Wednesday, April 1.
- Weeks 11-12:
Digital passband transmission and reception,
coherent phase-shift keying (PSK) and frequency-shift keying (FSK)
and quadriphase-shift keying (QPSK), noncoherent FSK,
quadrature amplitude modulation (QAM).
Applications to digital cellular phones and high-speed modems.
- Weeks 13-14:
Introduction to spread-spectrum modulation, frequency-hopping
and direct sequence, code-division multiplexing (CDM).
Application to CDMA wireless communication systems.