course: Time-variant Communication Systems
- teaching methods:
- lecture with tutorials
- black board and chalk
- responsible person:
- Priv.-Doz. Dr.-Ing. Karlheinz Ochs
- Priv.-Doz. Dr.-Ing. Karlheinz Ochs (ETIT)
- offered in:
- summer term
dates in summer term
- start: Wednesday the 21.04.2021
- lecture Wednesdays: from 10:15 to 11.45 o'clock
- tutorial Wednesdays: from 12:15 to 13.00 o'clock
Die Angaben zu den Prüfungsmodalitäten (im WiSe 2020/2021 | SoSe 2021) erfolgen vorbehaltlich der aktuellen Situation. Notwendige Änderungen aufgrund universitärer Vorgaben werden zeitnah bekanntgegeben.
Date according to prior agreement with lecturer.
|Form of exam:||oral|
|Registration for exam:||FlexNow|
The students know concepts for the characterization and description of time-variant systems. They are able to apply the theory to solve practical problems.
Developers of mobile radio systems are faced with increasing challenges because among other requirements greater data rates with lower power consumption are required. As mobile systems are inherently time-variant, they are difficult to master. This issue is addressed by the lecture, where methods of analysis, synthesis, and design of time-varying linear systems are taught. The systems are characterized by transfer functions and impulse responses, which are time- or frequency-variant. Especially, the time-variant transfer function is used to investigate the robustness of the general time-variant system for transmitting digital signals. Furthermore, the different systems are classified into systems being constant or periodic with respect to time or frequency. In particular, it is shown how time-variant transmission behavior can be approximated by high-performance models. The following specific applications will be discussed: Modulators, sampling systems, channels with multipath propagation, radar systems, and high-frequency amplifiers. Students have the option to practice their newly acquired knowledge based on an available transmission system.