标题：Resource allocation with minimum channels usage consideration for underlay cognitive radio networks
作者：Fu, Xiuhua ;Wang, Jiazheng
作者机构：[Fu, Xiuhua ] School of Computer Science and Technology, Shandong University of Technology, No. 12, Zhangzhou Road, Zibo, China;[Wang, Jiazheng ] Scho 更多
来源：ICIC Express Letters
摘要：An optimal channels-minimized resource allocation algorithm (U-CMiRA) is presented for spectrum underlay in cognitive radio networks (CRNs), in which link-based CRNs’ capacity maximization and allocated channel resources minimization can be achieved simultaneously, subject to the interference constraints both for primary users (PUs) and for secondary users (SUs). Also, we realize the U-CMiRA algorithm by solving binary integer linear programming (BILP) problem. Further, a near-optimal maximum distance ratio priority-based resource allocation algorithm (MaDRPRA) is proposed. The MaDRPRA performance is very close to that of U-CMiRA, but its complexity is much smaller than that of the latter. Finally, through extensive simulations, we demonstrate the effectiveness of the proposed algorithms in achieving high CRNs’ capacity and small number of allocated channels. © 2015, ICIC International.