Joint Detection of Primary Systems Using UWB Impulse Radios

Abstract—Regulation in Europe and Japan requires the implementation of detect-and-avoid (DAA) techniques in some bands for the coexistence of licensed primary systems and secondary ultra wideband (UWB) systems. In a typical coexistence scenario, a primary system may have potentially interdependent uplinkdownlink communication channels (e.g., simultaneous uplinkdownlink communications in a frequency division duplex system) overlapping with the frequency band of a UWB system. If such interdependencies of primary systems’ activities are known, the UWB system’s ability to detect primary systems can be improved. In this study, we are interested in determining the possible gains in the detection performance when taking interdependencies into account for practically implementable detection methods. Contrary to selecting the detection thresholds individually for each band as in a conventional detection approach, the bands are jointly processed. To this end, maximum a posteriori (MAP) dec...

• Type: Journal
• Year: 2011
• Where: TWC
• Authors: Serhat Erküçük, Lutz H.-J. Lampe, Robert Schober
• Keywords: Detection, Detection Performance, Primary Systems, TWC 2011