నైరూప్య

Spectrum Sensing Techniques for Cognitive Radio Networks: A Review

Prachi Kumari

Cognitive radio is one of the most promising technologies that resolves the problem of inefficient spectrum utilization by enabling secondary user to opportunistically utilize the unused licensed bands. The prime functionality of cognitive radio is spectrum sensing in which presence of the primary usersis accurately detected. In this paper various spectrum sensing methods are presented together with the discussion over their advantages and disadvantages.