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Detection the Spectrum Holes in the Primary Bandwidth of the Cognitive Radio Systems in Presence Noise and Attenuation
Department of Electrical Engineering, College of Engineering, Basra University, Basra, Iraq
Department of Electrical Engineering, College of Engineering, Basra University, Basra, Iraq
- 1 Department of Electrical Engineering, College of Engineering, Basra University, Basra, Iraq
- 2 Department of Electrical Engineering, College of Engineering, Basra University, Basra, Iraq
International Journal of Communications, Network and System Sciences·Volume 05 (2012)·Pages 684–690·Published 31 October 2012·DOI10.4236/ijcns.2012.510071
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Abstract
Cognitive Radio (CR) and Dynamic Spectrum Access (DSA) represent two complementary developments that will refashion the world of wireless communication. In order to investigate the roles of knowledge representation and reasoning technologies in this domain, we have developed an experimental cognitive radio simulation environment. That is, a conventional radio when operating in a particular communications mode always follows the same procedure and either succeeds or fails at a given task. A cognitive radio, by contrast, can use knowledge of radio technology and policy, representations of goals, and other contextual parameters to reason about a failed attempt to satisfy a goal and attempt alternate courses of action depending upon the circumstances.
KeywordsCognitive Radio (CR)Power Spectral Density (PSD)Primary User (PU)Secondary User (SU)
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