Various schemes for optimizing beamforming design, power and spectrum allocation in cognitive radio networks-A survey
H. U. Prasanth, T. Jayasree · 2017
As the technology grows from wired networks to wireless networks, there is a phenomenal deployment of wireless devices all over the globe. Thus the radio spectrum become an emerging crisis for the communications in Wireless. As per the studies and analysis by Federal Communication commission most of the spectrum which is allocated for primary user are not utilized effectively thus underutilized. This Spectrum scarcity problem is addressed by the Cognitive Radio Technology which utilizes the unused spectrum among the secondary users without generating any type of hindrance or interference to the primary user thus satisfying the Quality of Service. There are several algorithms available to perform feasibility in beamforming design and Power allocation in Cognitive Radio networks. In this paper, different methods is presented and reviewed various optimization methods.