双向认知网络物理层安全策略建模及仿真研究

doi:10.16182/j.issn1004731x.joss.19-0179

系统仿真学报 ›› 2021, Vol. 33 ›› Issue (1): 222-230.doi: 10.16182/j.issn1004731x.joss.19-0179

双向认知网络物理层安全策略建模及仿真研究

潘蕾^1,2, 李赞¹, 张志利², 李向阳²

1.西安电子科技大学综合业务网国家重点实验室,陕西西安 710071;
2.火箭军工程大学,陕西西安 710025

收稿日期:2019-04-24 修回日期:2019-05-09 发布日期:2021-01-18
作者简介:潘蕾(1980-),女,博士生,副教授,研究方向为协作通信技术等。E-mail：pl_528@163.com

Modeling and Simulation of Physical Layer Security Strategy in Two-Way Cognitive Networks

Pan Lei^1,2, Li Zan¹, Zhang Zhili², Li Xiangyang²

1. State Key Lab of ISN, Xidian University, Xi'an 710071, China;
2. Rocket Force University of Engineering, Xi'an 710025, China

Received:2019-04-24 Revised:2019-05-09 Published:2021-01-18

摘要/Abstract

摘要： 为提高移动通信系统的性能,构建了一个存在主网络干扰和窃听者的双向认知中继网络的物理层安全传输模型,设计了一种中继选择和功率分配的联合优化策略,用于对抗窃听者,保护收发节点的信息传输。通过仿真分析得出,此非凸优化问题限制条件较多,难以保证粒子群优化算法随机生成的初始解的可行性,从而造成求解困难。提出了一种基于可变网格优化和粒子群优化算法的混合优化算法。仿真结果表明此算法提高了次级网络的保密速率,提升了次级网络的安全性能。

关键词: 物理层安全, 中继选择, 功率分配, 混合优化, 保密速率

Abstract: In order to improve the performance of the mobile communication system, the physical layer security transmission models of a two-way cognitive relay network with the primary network and eavesdropper are established, and a joint optimization strategy for relay selection and power allocation is proposed to protect the source-destination transmission against the eavesdropper. It can be seen from the simulation analysis that this non-convex optimization problem has many restrictions, and it is difficult to guarantee the feasibility of the initial solution generated randomly by the PSO algorithm, resulting in the difficulty of obtaining solution. Therefore, a hybrid optimization algorithm based on variable mesh optimization (VMO) and particle swarm optimization (PSO) is proposed. Simulation results show that this algorithm improves the security rate and performance of the secondary network.

Key words: physical layer security, relay selection, power allocation, hybrid optimization, secrecy rate

中图分类号:

TN92

潘蕾, 李赞, 张志利, 李向阳. 双向认知网络物理层安全策略建模及仿真研究[J]. 系统仿真学报, 2021, 33(1): 222-230.

Pan Lei, Li Zan, Zhang Zhili, Li Xiangyang. Modeling and Simulation of Physical Layer Security Strategy in Two-Way Cognitive Networks[J]. Journal of System Simulation, 2021, 33(1): 222-230.

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双向认知网络物理层安全策略建模及仿真研究

Modeling and Simulation of Physical Layer Security Strategy in Two-Way Cognitive Networks

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