ENEE420 (Section 0101) Communication Systems by P. Narayan

New Announcements

The solutions to the final exam have been posted.

Contact Information

Prof. Narayan
301 405-3661
Office hours: Tu Th 2:00-3:15 AVW 2353


TuTh 11:00-12:15 EGR 2103


ENEE 322: Signals and systems
ENEE 324: Engineering probability

Required topics: (i) elementary signal theory (Fourier series, Fourier/Laplace transforms, convolution); (ii) random variables (probability distribution functions, probability mass functions, expectations, transformations, etc.).


Required: S. Haykin, Communication Systems, Fourth Edition, John Wiley & Sons, New York (NY) (2001).




Homework can be turned in during class, or submitted to the grader's mailbox (Leventhal, S.) in the student mailroom, on the second floor of A.V. Williams.
Homework Assignment 1: Due February 24 2005 Solution
Homework Assignment 2: Due March 10 2005 Solution
Homework Assignment 3: Due April 12 2005 Solution
Homework Assignment 4: Due May 12 2005 a href="hw4solution.pdf">Solution

Course Objectives

Communication is the process by which a message generated at one point is repre- sented by a signal which is transmitted through an imperfect medium to a receiver, where the message is reconstructed. The goals of this course include:

Grading System

The final grade for the course will be based on two tests and a final exam, as well as homework; their respective contributions to the final grade are given below. All three examinations, which will be of the closed book variety, will be conducted in the classroom.
(a) Exam 1 (30%)In-classThursday, March 17solution
(b) Exam 2 (30%)In-classThursday, April 21solution
(c) Final (30%)In-classMay 16 (8:00-10:00) (as in UMCP Schedule of Classes)
(d) Homework (10%)

During the course of the semester, several homework sets will be assigned. A subset of the answers for each homework set will be graded for credit. Solutions will be provided subsequently.

Course Topics

  1. Pulse modulation: Sampling, pulse-amplitude modulation, quantization, pulse code modulation.
  2. Data compression.
  3. Amplitude modulation: Conventional AM, suppressed carrier AM, single side- band AM; time and frequency representation, bandwidth requirements, power efficiency, coherent and envelope detection.
  4. Frequency modulation: Time and frequency representation, bandwidth require- ments, demodulation techniques.
  5. Digital modulation . phase shift keying, frequency shift keying, amplitude shift keying.
  6. Performance of modulation systems in the presence of noise.