摘要
Given imperfect channel state information(CSI)and considering the interference from the primary transmitter,an underlay cognitive multisource multidestination relay network is proposed.A closed-form exact outage probability and asymptotic outage probability are derived for the secondary system of the network.The results show that the outage probability is influenced by the source and destination number,the CSI imperfection as well as the interference from the primary transmitter,while the diversity order is independent of the CSI imperfection and the interference from the primary transmitter,yet it is equal to the minimum of the source and destination number.Moreover,extensive simulations are conducted with different system parameters to verify the theoretical analysis.
Given imperfect channel state information(CSI) and considering the interference from the primary transmitter, an underlay cognitive multisource multidestination relay network is proposed. A closed-form exact outage probability and asymptotic outage probability are derived for the secondary system of the network. The results show that the outage probability is influenced by the source and destination number, the CSI imperfection as well as the interference from the primary transmitter, while the diversity order is independent of the CSI imperfection and the interference from the primary transmitter, yet it is equal to the minimum of the source and destination number. Moreover, extensive simulations are conducted with different system parameters to verify the theoretical analysis.
基金
Supported by the National Natural Science Foundation of China(No.61301170,61571340)
the Fundamental Research Funds for the Central Universities(No.JB150109)
the 111 Project(No.B08038)
