Anti-interference cooperative spectrum sharing based on fairness secondary user selection
Weidang Lu, Chenxin He, Jiaying Wu, Hong Peng, Xin Liu · 2016
In this paper, we propose an anti-interference cooperative spectrum sharing strategy based on fairness secondary users selection where the secondary system can gain spectrum access to the primary system. Specifically, secondary user STband STqare selected to transmit the primary and secondary signal by using different bandwidth in the second transmission slot which occupies a part of the whole transmission time. The primary and secondary systems will not interfere with each other as they use orthogonal bandwidth to transmit their signals. We study the secondary users selection to guarantee the fairness among the secondary users, and the joint optimization of time and bandwidth allocation such that the transmission rate of the secondary system is maximized, while guaranteeing the primary system achieve its target rate. Simulation results confirm efficiency of the proposed spectrum sharing strategy, and the significant performance improvement of the cognitive system.