course: Time-variant Communication Systems

number:
141216
teaching methods:
lecture with tutorials
media:
black board and chalk
responsible person:
Priv.-Doz. Dr.-Ing. Karlheinz Ochs
lecturer:
Priv.-Doz. Dr.-Ing. Karlheinz Ochs (ETIT)
language:
german
HWS:
3
CP:
4
offered in:
summer term

dates in summer term

  • start: Wednesday the 08.04.2020
  • lecture Wednesdays: from 10:15 to 11.45 o'clock in ID 03/455
  • tutorial Wednesdays: from 12:15 to 13.00 o'clock in ID 03/455

Exam

Date according to prior agreement with lecturer.

Form of exam:oral
Registration for exam:FlexNow
Duration:30min

goals

The students know concepts for the characterization and description of time-variant systems. They are able to apply the theory to solve practical problems.

content

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.

requirements

keine

recommended knowledge

  • Fundamentals of system theory

materials

presentation slides: