智能反射面辅助的多天线通信系统鲁棒安全资源分配算法  

Robust Secure Resource Allocation Algorithm for Intelligent Reflecting Surface-assisted Multi-antenna Communication Systems

作　　者：徐勇军[1,2] 符加劲 黄琼 黄东[3] XU Yongjun;FU Jiajin;HUANG Qiong;HUANG Dong(School of Communication and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China;Chongqing Jinmei Communication Co.LTD.,Chongqing 400030,China;Key Laboratory of Advanced Manufacturing Technology,Ministry of Education Gui Zhou University,Guiyang 550025,China)

机构地区：[1]重庆邮电大学通信与信息工程学院,重庆400065 [2]重庆金美通信有限责任公司,重庆400030 [3]贵州大学现代制造技术教育部重点实验室,贵阳550025

出　　处：《电子与信息学报》2024年第1期165-174,共10页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(62271094);重庆市教委科学技术研究项目(KJZD-K202200601);重庆市博士后研究项目特别资助(2021XM3082)。

摘　　要：为了解决蜂窝通信系统中因窃听者、障碍物阻挡和信道不确定性导致安全性低和传输质量差的问题,该文提出一种智能反射面(IRS)辅助的多天线通信系统鲁棒安全资源分配算法。首先,考虑合法用户的安全速率约束、最大发射功率约束和IRS相移约束,基于有界信道不确定性,建立了一个联合优化基站主动波束、IRS被动波束的鲁棒资源分配问题。然后,利用S-程序、连续凸近似、交替优化和罚函数等方法对含参数摄动的原非凸问题进行转换,得到可直接求解的确定性凸优化问题。最后,提出一种基于迭代的鲁棒能效最大化算法。仿真结果表明,该文算法具有较好的能效和较强的鲁棒性。To solve the problem of low security and poor transmission quality in cellular communication systems caused by eavesdroppers,obstacles and channel uncertainties,a robust secure resource allocation algorithm for Intelligent Reflecting Surface(IRS)-assisted multi-antenna communication systems is proposed.Firstly,a robust resource allocation problem with bounded channel uncertainties is formulated by jointly optimizing the active beam of the base station,the passive beam of the IRS,meanwhile the secure rate constraint of legitimate users,the maximum transmit power constraint and the phase shift constraint of the IRS are considered.Then,the original non-convex problem with parametric perturbation is transformed using S-procedure,successive convex approximation,alternating optimization and penalty function to obtain a deterministic convex optimization problem that can be solved directly.Finally,an iteration-based robust energy efficiency maximization algorithm is proposed.Simulation results show that the proposed algorithm has good energy efficiency and strong robustness.

关 键 词：智能反射面 多天线通信系统 鲁棒性 安全通信 

分 类 号：TN929.5[电子电信—通信与信息系统]