Cognitive Radio Systems
Cognitive technologies is the terminology used to describe equipment which can determine itself which frequency to use. Experts believe that cognitive radio technologies are an enabler which will yield more efficient use of spectrum and provide more dynamic access to spectrum. Cognitive radios have the ability to use spectrum which other spectrum users are already using. that is becasue those other users are perhaps not using the spectrum all of the time or everywhere. In such circumstances sharing of spectrum is possible. Thus Cognitive Radio systems could use the "white spaces" not used for TV transmission in the 470-790 MHz frequency band in an area. Experts hope that these technologies will be able to use unused spectrum and thus ensure that the maximum use of spectrum in all areas.
Research by the
CTVR is taking place in Ireland on Cognitive Radio Systems and technologies.