Research Group Communications Engineering
The main focus of this research area is the development of transmission concepts and coding schemes for communication systems. The research work concentrates on the physical layer and the data link layer (OSI layers 1 and 2). Here, state-of-the-art forward error correction schemes approach Shannon's channel capacity for point-to-point communications very closely. However, the practical implementation of these sophisticated concepts is still going on and needs further progress.
While the ultimate limits are closely reached for point-to-point communications a more or less unsolved problem is the deterination of the capacity of even small networks like relay or sensor networks. For example, relay nodes are currently discussed as a suited mean for improving the coverage in cellular mobile radio systems. Moreover, sensor networks become more and more important in many different areas like ambient assisted living or environmental protection. Although information theory is dealing with relay networks already for decades, their capacity is not known until now. The information technology team is primarily working on the optimization of relay networks for mobile communications. Coding and transmission concepts as well as information theoretical considerations are the main focus.
Moreover, a real-time hardware MIMO demonstrator is currently developed. Based on Matlab-Simulink simulations the algorithms are finally implemented on FPGA and DSP platforms. It is intended to extent the demonstrator to a relay network as well.
- Wireless Communications
- Information Theory
- Error Correction Coding
- Single- and Multi-Carrier Transmission
- Multiple-Input Mulitple-Output Communications (e.g. multiple antenna systems)
- Cooperative strategies in relay networks
- Compressed Sensing
- Lab for Communication Systems ComLab