Ludek Subrt

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This study introduces the concept of an intelligent wall as an autonomous part of a smart indoor environment for cognitive wireless networks. Here, an intelligent wall is a wall inside a building equipped with an active frequency-selective surface, simple low-cost sensors and a cognitive engine with machine-learning ability. Using simulations, it has been(More)
This paper deals with a new approach to the control of the propagation environment in indoor scenarios using intelligent walls. The intelligent wall is a conventional wall situated inside a building, but equipped with an active frequency selective surface and sensors. The intelligent wall can be designed as a self-configuring and self-optimizing autonomous(More)
A widespread shortage of free frequency bands creates opportunities for intelligent cognitive systems. This type of radio system is able to change its system parameters, e.g. radiation power and frequency according to the current time and location. The presented system describes the possibility of how to shape an Ultra Wideband (UWB) pulse using a typical(More)
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