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Mit Beginn des Wintersemesters 2009/2010 startet im Instituts für Nachrichtentechnik in der...
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Communications Engineering
The main emphasis of this research area is the physical layer of a communication link. Today, the capacity of wired as well as wireless links can be principally achieved. However, the practical implementation still represents a demanding topic. Current projects are dealing efficient transmission and coding strategies, multiple antenna systems and detection algorithms.
A rather new topic with many unsolved problems is the simultaneous analysis and optimization of several links. This scenario appears e.g. in sensor networks, relay networks and cellular mobile radio systems. A key technology are cooperative transmission strategies. Current important research fields are distributed multi antenna systems, distributed channel coding and multiple access schemes in distributed systems.
Signal and Image Processing
The research group Signal and Image Processing deals with the development, analysis and optimization of methods and algorithms for efficient processing and compression of multimedia data (e.g. signals, images, stereo and video data (2D, 3D)).
Current research is mainly focused on multimedia signal processing (in particular video data compression, real-time video standard encoder/decoder, multistandard video decompression), watermarking of audio, image, and video data (for authentication, copyright protection, fingerprinting) and in addition distributed source coding (energy-efficient and robust video coding).
Radio Communication
Future information communities rely on a high throughput between mobile participants at low costs. Electro-magnetic waves are the only known physical medium qualified for such a high throughput. Solely high frequency engineering can offer the theoretical background to solve such problems. Advances in the field of data communication using electro-magnetic waves are only possible by consideration whole systems consisting of several transmitters, transmitter antennas, radio channels, receiver antennas and receivers as one communication system. Thereby, areas such as signal processing, the theory of Maxwell, the propagation of radio waves, high frequency circuitry and digital technology have an strong influence and impact on the considered solutions. Here, MIMO and OFDM mobile communication systems belong to current research topics.
Hydroacoustics
In the field of Hydroacoustics supported by some third party projects, there are longstanding experiences with solutions of engineering and geo-scientific problems in the field of examining of ocean bottoms (source for raw materials, construction ground, shipping, environmental protection, underwater archeology, global climate changings). Different techniques were developed and tested, also under sea conditions. Data was evaluated actively by students. Especially the development of the sedimant echo sounder SEL must be mentioned. With this device outstanding results in shallow water regions and in the deep sea were achieved (expeditions to the north sea, the baltic sea, the north and south atlantic).
