Energy efficiency in cognitive radio with cooperative MME (Maximum to Minimum Eigenvalue) spectrum sensing method

Cognitive radio is one way to overcome the limitations of the frequency spectrum. Cognitive radio users can utilize the frequency spectrum that is not being used (white space) by detect the frequency spectrum. Spectrum sensing is done periodically to ensure there is no interference, in that sense spectrum sensing activity in cognitive radio will increase energy consumption. Therefore, energy efficiency is very important to consider in cognitive radio technology. This research is study on energy efficiency in cognitive radio with cooperative MME (Maximum to Minimum Eigenvalue) spectrum sensing method. Energy efficiency is implemented by finding the optimal values of probability of a user wait or switch/handoff to another channel while the primary user is using the current channel. Cooperative MME spectrum sensing detection process which is not depend on the uncertainty of noise shows better performance than the energy detection method.