Cognitive Radio Implementation Issues in Channel Sensing

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Cognition means state and contextual awareness, reasoning and conclusion formulation, and a method by which application can be re-configured. Cognitive Radio (CR) is one such Intelligent Wireless Communication system that is built on Software Defined Radio which collects information from the surrounding environment and uses this learning to adapt itself to the variation in the input stimuli. The major objective of a Cognition based Radio is to deliver highly reliable communication as well as highly efficient utilization of the most precious natural resource of wireless communication, the frequency spectrum.