Power Allocation in CRNs based on QoS and QoE

In Cognitive Radio Networks, secondary users have access to the channel Opportunistically. So, it must be ensured that the severe interference, that damages the main network, does not occur. Using the resource allocation methods provides the best access to the spectrum for the secondary users, increases their performance, and primary users are protected from collisions. The Underlay method is one of the methods of the Cognitive Radio Network. In this method the secondary and the primary users simultaneously present in the channel. The power allocation in an underlay Cognitive Radio Network, may ensure that the secondary users do not interfere with the primary users. Using optimization techniques is a way to improve the performance of these networks. The NSGA-III algorithm, a multi-Objective optimization method, is efficient and offers acceptable results. This paper presents a power allocation method in the Underlay Cognitive Radio Networks based on the improvement of QoS and QoE, using the NSGA-III algorithm.