A Concept for a standard-independent Cognitive Radio Terminal

Inhalt:
During the last years the dynamic spectrum management has been classified as a necessary modification in the spectrum allocation policy. Within the huge amount of publications dealing with this topic two main approaches can be pointed out. On the one hand the overlay system concept which allocate temporary unused frequency bands of established licensed systems. On the other hand the auction-based spectrum allocation schemes providing abstract radio resource units to the user. These units have to be transmitted using the available Radio Access Technologies (RAT). Both concepts have in common that the mobile terminal has to be adapted to the used frequency bands or radio transmission standards, respectively. Therefore, the Cognitive Radio concept is considered to provide the required flexibility. In order to support a high adaptability of the mobile terminal we present a concept for the physical layer structure of a Cognitive Radio. In addition to the classical parts of a mobile transmitter the Cognitive Radio specific functions like spectral observation and knowledge processing will be included.