基于非完美CSI的星空协作网络安全波束成形算法
Secure Beamforming Algorithm for Satellite and Aerial Cooperative Network with Imperfect CSI
王子宁 1谈苗苗 1林志 2程铭 1朱卫平3
作者信息
- 1. 南京邮电大学通信与信息工程学院,南京 210003
- 2. 国防科技大学电子对抗学院,合肥 230037
- 3. 康考迪亚大学电子与计算机学院,蒙特利尔QC H3G1M8
- 折叠
摘要
针对无人机作为中继的星空协作网络,提出了一种基于非完美信道状态信息的安全波束成形算法.建立以安全速率最大化和发射功率最小化为目标函数的多目标优化问题.考虑到窃听者和非网内用户的完美信道状态信息难以获得,提出一种结合加权和方法、角度离散化和连续凸逼近的求解方法,将非凸多目标问题转换成凸形式,并进一步利用半正定规划求解.仿真验证所提算法能够在安全性能和能耗之间获得一个较好的折中.
Abstract
A secure beamforming(BF)algorithm with imperfect channel state information(CSI)is proposed for a satellite and sky cooperative network with the help of UAV relay.Firstly,a multi-objective optimization problem(MOOP)is formulated to maximize the achievable secrecy rate and to minimize the transmit power.Then,considering that it is difficult to obtain the perfect CSI of eavesdroppers and out-network users,a method combing weighted sum method,the solution method of angular discretization and successive convex approximation are proposed to convert the non-convex multi-objective problems into a convex one,and the semidefinite programming is adopted to solve the problem.The simulations confirm that a better compromise can be achieved between security and power consumption by the proposed algorithm.
关键词
星空协作网络/多目标优化/鲁棒波束成形/物理层安全Key words
satellite and aerial cooperative network/multi-objective optimization/robust beamforming/physical layer security引用本文复制引用
基金项目
重点国际合作项目(61720106003)
国家自然科学基金(62301282)
江苏省研究生科研与实践创新计划(KYCX22_0959)
南京邮电大学引进人才科研启动基金(NY220111)
出版年
2024
NETL
NSTL
万方数据