Analysis of Spectrum for Cognitive Radio using Matched Filter Detector and OFDM Technique

Cognitive radio is a novel technology which improves the spectrum utilization problem by allowing secondary users to borrow unused radio spectrum from primary licensed users. By sensing and adapting to the environment, a cognitive radio is able to determine the spectrum holes and provide vacant bands to its users without causing harmful interference to the licensed users. To sense the spectrum holes, different spectrum sensing techniques are used. This paper presents an overview of cognitive radio, spectrum sensing techniques and also describe operation of match filter detector. It also gives information about analysis of spectrum using OFDM technique for cognitive radio using MATLAB software.