Energy-Efficient Resource Allocation for Secure Cognitive Radio Network With Delay QoS Guarantee
Energy-Efficient Resource Allocation for Secure Cognitive Radio Network With Delay QoS Guarantee
复制标题
具有延迟 QoS 保证的安全认知无线电网络的节能资源分配
DOI：
10.1109/jsyst.2018.2875835
复制
发表时间：
2019
影响因子：
4.4
通讯作者：
Ma Yanbo
中科院分区：
文献类型：
--
作者：
Bai Zhiquan;Ma Liuqing;Dong Yanan;Ma Piming;Ma Yanbo
针对采用时分多址接入方式的多用户安全认知无线电网络（CRN），提出了一种保证统计时延服务质量的联合资源分配策略。通过对具有理想信道状态信息（CSI）的多用户安全CRN资源分配问题的求解，提出了能量有效的功率和时间联合优化方案，该方案以最小化公平性、时延和安全性约束下的$\beta$-fair代价函数为目标.此外，考虑到多用户安全CRN与不完美的CSI，我们还提出了一种鲁棒的资源分配方案和鲁棒性和可实现的和功率之间的权衡进行了分析。数值结果表明，具有完美CSI的最优资源分配方案可以有效平衡能源效率和公平性之间的权衡，并且优于其他传统资源分配策略的上级性能。此外，不完全CSI下的鲁棒资源分配策略使理论研究更接近实际应用。
A joint resource allocation policy for an underlay multi-user secure cognitive radio network (CRN) adopting the time-division multiple-access scheme with the guarantee of the statistical delay quality-of-service is proposed in this paper. Through the problem formulation of the resource allocation for the multi-user secure CRN with perfect channel state information (CSI), the energy-efficient joint power and time optimization scheme is proposed, which aims at minimizing the $\beta$-fair cost functions subject to fairness, delay, and security constraints. Furthermore, considering the multi-user secure CRN with imperfect CSI, we also propose a robust resource allocation scheme and the tradeoff between the robustness and the achievable sum-power is analyzed. Numerical results show that the optimal resource allocation scheme with perfect CSI can effectively balance the tradeoff between the energy efficiency and the fairness and is superior to the other conventional resource allocation strategies. Moreover, the robust resource allocation policy with imperfect CSI makes the theoretical research much closer to the practical applications.