Performance analysis of multiantenna and cooperative cognitive radio under spatial correlation

Abstract

In cognitive radio the transmitter behavior adapts according to the information about the surroundings in which it operates thereby enhancing the spectrum utilization Based on the available information the spectrum monitor decides the transmission strategies for the cognitive secondary users SUs whether to interweave underlay or overlay the SU signal To improve the performance of the system multiantenna and cooperation strategies are introduced Due to the size limitations of the devic