基于IRS辅助的SWIPT物联网系统安全波束成形设计

doi:10.11959/j.issn.1000-436x.2021060

通信学报 ›› 2021, Vol. 42 ›› Issue (4): 185-193.doi: 10.11959/j.issn.1000-436x.2021060

基于IRS辅助的SWIPT物联网系统安全波束成形设计

朱政宇¹^,²^,³^,⁴, 徐金雷¹, 孙钢灿¹^,²^,⁴, 王宁²^,³, 郝万明²^,³^,⁴

¹ 郑州大学河南先进技术研究院，河南郑州 450001
² 郑州大学信息工程学院，河南郑州 450001
³ 郑州大学河南省智能网络和数据分析国际联合实验室，河南郑州 450001
⁴ 郑州大学产业技术研究院，河南郑州 450001

修回日期:2020-11-16 出版日期:2021-04-25 发布日期:2021-04-01
作者简介:朱政宇（1988- ），男，河南周口人，博士，郑州大学讲师，主要研究方向为智能反射面技术、物理层安全技术、无线通信与信号处理等。
徐金雷（1996- ），男，河南郑州人，郑州大学硕士生，主要研究方向为物理层安全技术与无线携能传输。
孙钢灿（1977- ），男，河南濮阳人，博士，郑州大学教授，主要研究方向为深度学习、机器学习、无线通信、物理层安全技术等。
王宁（1982- ），男，河南郑州人，博士，郑州大学教授，主要研究方向为无线资源管理、物理层安全技术、通信信号处理等。
郝万明（1988- ），男，河南林州人，博士，郑州大学讲师，主要研究方向为毫米波通信、大规模 MIMO 技术、物理层安全技术等。
基金资助:
国家自然科学基金资助项目(61801434);国家自然科学基金资助项目(61801435);国家自然科学基金资助项目(61771431);中国博士后科学基金资助项目(2020M682345);河南省科技攻关计划基金资助项目(192102310178);郑州市重大科技创新专项基金资助项目(2019CXZX0037);国家重点研发计划基金资助项目(2019QY0302);国家重点研发计划基金资助项目(2019YFB1803200)

Secure beamforming design for IRS-assisted SWIPT Internet of things system

Zhengyu ZHU¹^,²^,³^,⁴, Jinlei XU¹, Gangcan SUN¹^,²^,⁴, Ning WANG²^,³, Wanming HAO²^,³^,⁴

¹ Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou 450001, China
² School of Information Engineering, Zhengzhou University, Zhengzhou 450001, China
³ Joint International Laboratory of Intelligent Network and Data Analysis in Henan Province, Zhengzhou University, Zhengzhou 450001, China
⁴ China Industrial Technology Research Institute, Zhengzhou University, Zhengzhou 450001, China

Revised:2020-11-16 Online:2021-04-25 Published:2021-04-01
Supported by:
The National Natural Science Foundation of China(61801434);The National Natural Science Foundation of China(61801435);The National Natural Science Foundation of China(61771431);China Post-doctoral Science Foundation Project(2020M682345);The Science and Technology Research Project of Henan Province(192102310178);The Science and Technology Innovation Project of Zhengzhou(2019CXZX0037);The National Key Re-search and Development Program of China(2019QY0302);The National Key Re-search and Development Program of China(2019YFB1803200)

摘要/Abstract

摘要：

为满足绿色万物互联的智能信号处理部署和物理层安全的新要求，针对基于智能反射面辅助的无线携能通信物联网系统中可持续能量供应紧缺问题，提出了一种安全波束成形设计方法。考虑保密速率、发射功率和IRS反射相移约束，以最大化能量采集器采集功率为目标，联合优化基站发射波束成形矩阵和干扰机协方差矩阵以及IRS相移，将优化问题建模为具有二次型约束的非凸二次型规划问题。利用松弛变量、半定松弛法、辅助变量和序列参数凸逼近法将非凸的二次型问题转化为等价的凸问题，并提出一种交替迭代优化算法获取原问题的可行解。仿真结果表明，所提算法能够快速收敛，且与基准方案相比能有效地提升性能。

关键词: 智能反射面, 物联网, 无线携能通信系统, 安全波束成形, 能量采集

Abstract:

In order to meet the new requirements of intelligent signal processing deployment and physical layer security for green interconnection of things, a design method of secure beamforming was proposed to solve the problem of the shortage of sustainable energy supply in the information and energy transmission at the same time Internet of things (IoT) system assisted by intelligent reflecting surface (IRS).Considering the constraints of secrecy rate, transmit power and IRS reflection phase shift, the optimization problem was modeled as a non-convex quadratic programming problem with quadratic constraints, aiming at maximizing the acquisition power of energy collector, and jointly optimizing the base station transmit beamforming matrix, jammer covariance matrix and IRS phase shift.The non-convex quadratic problem was transformed into an equivalent convex problem by using the relaxation variable, semidefinite relaxation method, auxiliary variable and sequence parameter convex approximation method, and an alternative iterative optimization algorithm was proposed to obtain the feasible solution of the original problem.Simulation results show that the proposed algorithm can converge quickly and improve performance effectively compared with the benchmark scheme.

Key words: intelligent reflecting surface, Internet of things, simultaneous wireless information and power transfer system, secure beamforming, energy harvest

中图分类号:

TN92

朱政宇, 徐金雷, 孙钢灿, 王宁, 郝万明. 基于IRS辅助的SWIPT物联网系统安全波束成形设计[J]. 通信学报, 2021, 42(4): 185-193.

Zhengyu ZHU, Jinlei XU, Gangcan SUN, Ning WANG, Wanming HAO. Secure beamforming design for IRS-assisted SWIPT Internet of things system[J]. Journal on Communications, 2021, 42(4): 185-193.

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参数名称	取值
每米的路径损耗L/dB	30
基站、干扰机与IRS间路径损耗指数	2.4
IRS与EHR、Eve、IoT设备间路径损耗指数	2.4
基站、干扰机与 EHR、Eve、IoT 设备间路径损耗指数噪声方差σ²/dBm	3
采集效率ξ	-105
基站发射功率P_B/W	0.5
干扰机发射功率P_J/W	15

基于IRS辅助的SWIPT物联网系统安全波束成形设计

Secure beamforming design for IRS-assisted SWIPT Internet of things system

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