Research on Power Control in Cognitive Radio Networks Based on IEEE 802.22
Hong Bob · Video Engineering · 2010
Under the constraints of Signal to Interference-plus Noise Ratio(SINR) and total power,a power control strategy is proposed for cognitive radio networks.Primary user's tolerable interference changes continuously with the status of communication environment.Thus,cognitive user needs to strictly control its transmission according to primary user's signal-to-noise ratio.Simulation results show that the proposed power control strategy can maximize the transmission rate and reduce the outage probability of cognitive users efficiently.Furthermore,the QoS targets of primary user is guaranteed.