Lecture Language:
  • German
Hours (Lecture):
  • We 16:15-17:45 H7
    Thu 12:15-13:45 H7
Hours (Exercise):
  • Thu 16:15-17:45 H7
Credit Points:
  • 5 ECTS
Time Lecture:
  • 2,5
Time Exercise:
  • 1,5
UnivIS Links:


The lecture Signals und Systems II deals with the basics of discrete signals and systems. This lecture is an important basis for further lectures like Digital Signal Processing, Digital Communications or Image and Video Compression. In the beginning, the discrete signals and systems are introduced and explained in an illustrative way. Methods will be introduced which show, how to describe discrete-time signals and systems and how they can be investigated. Therefore several criteria for evaluation of discrete-time LTI systems will be introduced. Among others, different transformation methods (i.e., discrete-time Fourier-transform, z-transform, and discrete Fourier-transform, which is very useful in practical applications) are explained, which are necessary for investigation of discrete signals. Also different special discrete LTI systems are introduced. It will be shown how such discrete systems can be realised. Thereby, the stability criterion plays a very important role. The representation of stochastic signals as well as the possibility of processing such signals with the help of LTI systems will also be described.


The content of the course "Signals und Systems II" has been changed in comparison to the years before 2011. The lecture now contains discrete signals and systems only, and counts as 5 ECTS. The course is a compulsory module for the bachelor degree in electrical engineering, electronics and information technology, informations and communications technology, industrial engineering (focus on information and communication systems), and an elective module for the bachelor degree in medical engineering (focus electrical engineering/information technology/computer science).


The lecture requires a basic knowledge in higher mathematics, especially in sequences and series, integral calculus, and complex numbers. Additionally, an elementary knowledge in probability and statistics would be helpful. The lecture is a complementary course for the module "Signals and Systems I", which handles continuous signals and systems. It is normally offered subsequent to "Signals and Systems I" to students in the fourth semester, who started their bachelor studies in the winter semester. However, students who started their bachelor studies in the summer semester should attend the lecture in the third semester before having attended "Signals and Systems I".


The schedule for this lecture can be downloaded from StudOn.

Course materials

The lecture documents can be downloaded from StudOn.


For support, a hand-written formulary of one DIN A4 page (two-sided) length and a non-programmable calculator may be used. A computer-generted formulary is not permitted. The tables for different transforms will be provided with the exam.