RF sensing (DFAR)

RF-based device-free recognition

Recognition of activities from RF-signals. We leverage amplitude-based features for the distinction of situations, activities and gestures. more...
Spontaneous secure device pairing

Spontaneous secure device interaction

Based on fingerprints from ambient audio of devices in proximty we generate secure cryptographic keys with the help of fuzzy cryptography. more...
Function Calculation

Function-calculation on the RF-channel

We exploit the convolution of random distributions for the calculation of mathematical functions from superimpositions of simultaneously transmitted values. more...
Function Calculation

Distributed adaptive beamforming

We analyse a class of iterative feedback-based distributed beamforming approaches with low computational complexity. Sharp asymptotic bounds and an asymptotically optimal approach. more...

Context prediction

We proactively anticipate the evolution of context time series, investigate architectures for context prediction and consider novel prediction algorithms. more...

Phone sense - Ad-hoc pairing of devices based on shared audio

NII Grand Challenge 2012 - Reliable RF-based device-free activity recognition.

DAAD FIT - Implicit situation awareness of a wireless sensor network utilising channel quality estimations.

ContextAsAKey - Utilisation of context information to ensure privacy between communicating applications.

DFG SPP 1183: Organic computing - Emergent radio

BSI Project MoSe - Modelling of wireless sensor networks. In collaboration with the Institute for Telematics of the Karlsruhe Institute of Technology