Sixth-generation (6G) mobile communication networks are expected to have dense
infrastructures, large antenna size, wide bandwidth, cost-effective hardware, diversified …

Cognitive radio (CR) is the enabling technology for supporting dynamic spectrum access:
the policy that addresses the spectrum scarcity problem that is encountered in many …

The spectrum sensing problem has gained new aspects with cognitive radio and
opportunistic spectrum access concepts. It is one of the most challenging issues in cognitive …

We are in the midst of a major paradigm shift in how we manage radio spectrum. This
paradigm shift is necessitated by the growth of wireless services of all types and the demand …

Radar signal design in a spectrally crowded environment is a very challenging and topical
problem due to the increasing demand for both military surveillance/remote-sensing …

Compressive sensing (CS) has received much attention in several fields such as digital
image processing, wireless channel estimation, radar imaging, and cognitive radio (CR) …

Spectrum inference, also known as spectrum prediction in the literature, is a promising
technique of inferring the occupied/free state of radio spectrum from already …

Cognitive radio (CR) has been considered as a potential candidate for addressing the
spectrum scarcity problem of future wireless networks. Since its conception, several …

This article describes some key ideas and applications of cognitive radars, highlighting the
limits and the path forward. Cognitive radars are systems based on the perception-action …

The article analyzes the problem of energy efficient techniques in cooperative spectrum
sensing (CSS). Although it was proven that single-device sensing is not sufficient for reliable …