Development and evaluation of low complexity physical layer concepts for energy efficient UWB communications

• Antragsteller: Dr.-Ing. Mike Wolf
• Fachliche Zuordnung: Elektronische Halbleiter, Bauelemente und Schaltungen, Integrierte Systeme, Sensorik, Theoretische Elektrotechnik
• Förderung: Förderung von 2006 bis 2011
• Projektkennung: Deutsche Forschungsgemeinschaft (DFG) - Projektnummer 24265408

The main purpose of this project is the development and investigation of low complexity UWB physical layer solutions, which provide energy efficiency combined with robustness in multiuser environments or scenarios with narrowband interference. UWB transceivers based on OFDM require very fast AD and DA converters which at the same time provide a high dynamic range. Such solutions are neither feasible for low cost nor for low power consumption devices, i.e., OFDM is not suited for sensor networks and similar applications considered here. Even alternatives like impulse radio or direct sequence based UWB may require a similar complexity, especially if non-LOS arrangements should work, too. This is due to the fact that, if a (cross) correlation based receiver is used, a Rake must be applied to capture a significant amount of the total energy which is contained in the multiple transmission paths resolvable at the detector. We investigate the suitability of low complexity approaches which rely on autocorrelation receivers or on non-coherent envelope and energy detectors, respectively. To identify and improve qualified solutions, a critical review will be performed under realistic conditions and under consideration of appropriate quality measures (such as the amount of the captured energy, interference resistance, multiple access behavior or localization capability). The basic goal is the derivation of general design rules for optimized low complexity communication systems.

• DFG-Verfahren: Schwerpunktprogramme
• Teilprojekt zu: SPP 1202: Ultrabreitband-Funktechniken für Kommunikation, Lokalisierung und Sensorik (UKoLoS)
• Beteiligte Person: Professor Dr.-Ing. Martin Haardt