Cognitive RF Systems and EM Fratricide

摘要

In many parts of our world the radio frequency (RF) spectrum is overcrowded. The Department of Defense and researchers throughout the US have been addressing this problem by developing cognitive radios, networks, and radar systems to intelligently choose frequencies, waveform parameters, antenna beam patterns, etc. to operate with conventional receivers without causing electromagnetic (EM) fratricide. In most of the documented work that addresses EM fratricide to date, there is an inherent assumption that the cognitive system knows when and where the fratricide occurs. However, the authors usually do not make known how this information is obtained In this paper we propose two approaches of how the victim receivers can work together with cognitive systems and share the knowledge of their EM status.