Spectrum Occupancy Analysis and Fuzzy Logic System for Cognitive Radio

Abstract

In the first part of the project we studied the spectrum usage pattern in Waknaghat in the frequency bands ranging from 80 MHz to 500 MHz. The occupancy is quantified as the amount of spectrum detected above a certain received power threshold. The outcome of this study suggests that we may employ emerging spectrum sharing technology such as the cognitive radio technology for future wireless services. In the second part we have used a Fuzzy Logic System to arrive at a decision whether to transfer spectrum to a Secondary User i.e. Cognitive Radio User. There are four parameters that we have used here. The Received Signal Strength, Distance between Primary User (i.e. the Licensee) and the Secondary User, Transmission Power required by Secondary User and the Velocity of Secondary User with respect to Primary User.