Lecturer: Prof. Dr.-Ing. Peter Jax

Contact: Till Hardenbicker

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 available for download at the RWTHmoodle learning room.

These documents can be purchased on request from Irina Esser



from Wednesday, October 13, 2021
08:30 - 10:00
Lecture room FT

The first two dates will take place online via Zoom. The dial-in dates will be announced in advance via RWTHmoodle.



from Wednesday, October 13, 2021
10:15 - 11:00
Lecture room FT

The first two dates will take place online via Zoom. The dial-in dates will be announced in advance via RWTHmoodle.

Consultation hours:

Monday, July 18, 2022

Friday, July 22, 2022

Wednesday, July 27, 2022


Friday, July 29, 2022
Lecture room AOC

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)!

The lecture "Kommunikationstechnik" is part of the Bachelor program "Elektrotechnik, Informationstechnik und Technische Informatik" in the 5th semester. The formal connection to the module catalogs can be found at RWTHonline


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 2021/22

Participants of the evaluation: 21
Global grade: 1,4
Concept of the lecture: 1,4
Instruction and behaviour: 1,3

Participatns of the evaluation: 13
Global grade: 1,5
Concept of the exercise: 1,5
Instruction and behaviour: 1,4