Using the Channel Impulse Response for Localization of Obstacles

Status: open
Supervisor: Horst Hellbrück , Marco Cimdins
Student: n.a.


Ultra-wideband (UWB) technologies such as IEEE 802.15.4a are leading candidates for indoor localization systems. The high bandwidth results in time resolutions in the nanosecond domain enabling localization accuracies below 0.5 m. Another advantage of UWB is that channel impulse responses can be easily measured and evaluated in terms of line-of-sight and non-line-of-sight components.


The goal of this thesis is to determine, how an UWB channel impulse response can be used to detect the position of reflectors (e.g. walls and persons in the proximity of the radio signal).


  • Modeling of the UWB channel impulse response via simulation
  • Evaluation of the UWB model with measurements
  • Mathematical description of the forward problem (known transmitter and receiver positions and positions of the walls/obstacles)
  • Derivation of the inverse problem
  • Evaluation of the inverse problem with simulation
  • Evaluation of the inverse problem with the measured signal (calculation of the position of the reflection/multipath components)
  • Systematic evaluation of the inverse problem with UWB radio modules
  • Estimation of the boundaries (number of reflections, accuracies, noise, ...)


  • Good knowledge of a high-level programming language (e.g. Python, Java, Matlab, C#)
  • Basic knowledge of statistics
  • Interest in radio applications and digital signal processing
  • Willingness to familiarize yourself with Decawave UWB devices
  • Independent and self-organized working