Lecturer: Prof. Dr.-Ing. Peter Jax

Contact:Stefan Kühl

Type: Bachelor lecture

Credits: 4

Lecture in RWTHonline
Exercise in RWTHonline
RWTHmoodle learning room
(Registration via RWTHonline)

Course language: German

Lecture notes and exercise problems in German language will be sold before the first lecture as well as by Irina Ronkartz.

All scripts and auxiliary sheets will also be available for download at the RWTHmoodle learning room.



from Friday, October 30, 2020
08:30 - 10:00


from Friday, October 30, 2020
10:15 - 11:00

Consultation hours:

Monday, March 15, 2021
2:00-3:00 p.m.

Monday, March 22, 2021
2:00-3:00 p.m.

Friday, March 26, 2021
10:00-11:00 a.m.


Exam WS20/21
Monday, March 29th, 2021

12:00 - 13:30
Lecture room FT

Exam duration: 90 minutes

Remarks: The exam is in written form. The date corresponds also to the proof of achievements(Leistungsnachweise) in written form.

Resources: The exam is held with open books excluding programmable pocket calculators and communication devices.

Please note: Please bring along your student ID (BlueCard)!


Date will be announced.

The lecture "Kommunikationstechnik" is part of the modules

  • Communications Engineering BIK1.X (mandatory),
  • Computer Engineering BTI1.X (mandatory) and
  • Micro and Nano Electronics BME1.X (required elective)

in the 5th semester of the Bachelor program "Elektrotechnik, Informationstechnik und Technische Informatik".


In this one term lecture theory and practice of digital transmission of information is discussed. After an introduction to information theory of sources and transmission channels the main elements of modern digital communication systems are discussed:

  • source coding
  • channel coding
  • modulation
  • multiplex and multiple access methods.

The goal of this lecture is to teach the basics of the individual parts as well as to give the system overview which is necessary for the understanding of complex transmission systems. Here, the information theoretical background, the principle bounds, and the interaction of the individual parts are of particular interest.

The practical application will be discussed with numerous examples, e.g.,

  • speech and channel coding in GSM/UMTS mobile radio network
  • data compression of the facsimile transmission
  • MPEG video coding
  • error correction in CD and DVD systems
  • transmission technology of the GSM/UMTS mobile radio network.

Particular topics can be examined at the laboratories "Communications Engineering" and "Real-Time Audio Processing" in experiments which are coordinated with this lecture. Furthermore this course is harmonized with the special lectures "Advanced Coding and Modulation", "Audio Signal Enhancement" and "Digital Speech Transmission" of the Master program.


The results of the evaluation of the last years are summarized below.

Winter term 2019/20

Participants of the evaluation: 28
Global grade: 1,2
Concept of the lecture: 1,3
Instruction and behaviour: 1,2

Participatns of the evaluation: 28
Global grade: 1,6
Concept of the exercise: 1,5
Instruction and behaviour: 1,7