# Lecture "Signals and Systems I"

## Basic Information

 Lecturers: Gerhard Schmidt (lecture) and Marco Gimm (exercise) Room: C-SR-I Language: German Target group: Students in electrical engineering and computer engineering Prerequisites: Mathematics for engineers I, II, III, Foundations in electrical engineering I, II Contents: This course teaches basics in systems theory for electrical engineering and information technology. This basic course is restricted to continuous and deterministic signals and systems. Topic overview: Basic classes of signals and systems Introduction and notation Signals Systems Signals Elementary signals Reaction of linear systems on elementary signals Signal decomposition into elementary signals Spectral representations of deterministic signals Fourier series, Discrete Fourier Transform (DFT) Fourier transform Laplace and z transform Linear systems Reaction on elementary signals Reaction on arbitrary signals Quantities for describing linear systems and their relations Stability of linear systems Rational transfer-functions Modulation Basics Sampling theorem References: H.W. Schüßler: Netzwerke, Signale und Systeme II: Theorie kontinuierlicher und diskreter Signale und Systeme, Springer, 1991H.D. Lüke: Signalübertragung, Springer, 1995

## News

Exam Results and Exam Inspection:

The results of the sommer semester's exam of 08.09.2017 are online in the QIS-system. Please note the date of the exam inspection:

Date: Friday, 06.10.2017
Time: 09:00 h - 10:00 h
Room: Library of the DSS-group (D-037 A)

## Lecture slides

 Slides of the lecture "Introduction" (details of the lecture, notation, signals, systems) Slides of the lecture "Signals" (basic signals, reaction on basic signals, signal decomposition) Slides of the lecture "Spectral Representations - Part 1" (Fourier series, Discrete Fourier Transform) Slides of the lecture "Spectral Representations - Part 2" (Fourier Transform) Slides of the lecture "Spectral Representations - Part 3" (Laplace and z-transform) Slides of the lecture "Linear Systems" (Basics and relations between different system descriptions) Slides of the lecture "Modulation" (Basics and linear modulation schemes)

## Exercises

Exercises can be found on an extra web page.

## Formulary

A formulary can be found below:

 Formulary

## Previous Exams

 Exam of the summer term 2017 Corresponding solution Exam of the winter term 2016/2017 Corresponding solution Exam of the summer term 2016 Corresponding solution Exam of the winter term 2015/2016 Corresponding solution Exam of the summer term 2015 Corresponding solution

### Website News

01.10.2017: Started with a Tips and Tricks section for KiRAT.

01.10.2017: Talks from Jonas Sauter (Nuance) and Vasudev Kandade Rajan (Harman/Samsung) added.

13.08.2017: New Gas e.V. sections (e.g. pictures or prices) added.

05.08.2017: The first "slide carousel" added.

### Recent Publications

J. Reermann, P. Durdaut, S. Salzer, T. Demming, A. Piorra, E. Quandt, N. Frey, M. Höft, and G. Schmidt: Evaluation of Magnetoelectric Sensor Systems for Cardiological Applications, Measurement (Elsevier), ISSN 0263-2241, https://doi.org/­10.1016/­j.measurement.2017.09.047, 2017

S. Graf, T. Herbig, M. Buck, G. Schmidt: Low-Complexity Pitch Estimation Based on Phase Differences Between Low-Resolution Spectra, Proc. Interspeech, pp. 2316 -2320, 2017

### Contact

Prof. Dr.-Ing. Gerhard Schmidt

E-Mail: gus@tf.uni-kiel.de

Christian-Albrechts-Universität zu Kiel
Faculty of Engineering
Institute for Electrical Engineering and Information Engineering
Digital Signal Processing and System Theory

Kaiserstr. 2
24143 Kiel, Germany

## Recent News

Jens Reermann Defended his Dissertation with Distinction

On Friday, 21st of June, Jens Reermann defended his research on signals processing for magnetoelectric sensor systems very successfully. After 90 minutes of talk and question time he finished his PhD with distinction. Congratulations, Jens, from the entire DSS team.

Jens worked for about three and a half years - as part of the collaborative research center (SFB) 1261 - on all kinds of signal ...