Author : Triparna Mukherjee, Asoke Nath [ Volume No.:IV, Issue No.IV - July 2015] [Page No : 545-554] [2015]

Cognitive radio is a revolutionary technology that allows efficient, adaptable and intelligent use of spectrum without causing interference to the current licensed users. For cognitive radio adaptability, optimal usability and the power to evolve are the major factors that set apart an evolutionary machine. This paper introduces the concept of spectrum and network heterogeneity in case of cognitive radio technology, spectrum management and spectrum sharing techniques. The challenges faced in networking in an cognitive environment is also discussed with some proposed solutions.