通信学报 ›› 2019, Vol. 40 ›› Issue (1): 110-118.doi: 10.11959/j.issn.1000-436x.2019016

• 学术论文 • 上一篇    下一篇

联合能量收集中继与全双工目的节点的安全资源分配方案

王伟1,李鑫睿1,殷柳国1,章国安1,张士兵1   

  1. 1 南通大学电子信息学院,江苏 南通 226019
    2 南通先进通信技术研究院,江苏 南通 226019
    3 清华大学信息科学技术学院,北京 100084
  • 修回日期:2018-12-24 出版日期:2019-01-01 发布日期:2019-02-03
  • 作者简介:王伟(1983- ),男,江苏泗洪人,博士,南通大学副教授、硕士生导师,主要研究方向为无线携能通信、物理层安全通信和海域宽带通信。|李鑫睿(1996- ),男,江苏东海人,南通大学硕士生,主要研究方向为无线携能通信、物理层安全通信。|殷柳国(1977- ),男,广西贵港人,博士,清华大学教授、博士生导师,主要研究方向为空地协同通信、通信信道编码和海域宽带通信。|章国安(1965- ),男,江苏南通人,博士,南通大学教授、博士生导师,主要研究方向为通信信号处理、认知车载无线通信网络。|张士兵(1962- ),男,江苏南通人,博士,南通大学教授、博士生导师,主要研究方向为通信信号处理、认知无线电技术与宽带数字通信。
  • 基金资助:
    国家自然科学基金资助项目(61771263);国家自然科学基金资助项目(61871241);江苏省“六大人才高峰”基金资助项目(KTHY-039);南通市科技计划基金资助项目(GY22017013);南通大学—南通智能信息技术联合研究中心开放课题基金资助项目(KFKT2016B02);南通大学—南通智能信息技术联合研究中心开放课题基金资助项目(KFKT2017B02)

Secure resource allocation in hybrid energy-harvesting relay and full-duplex receiver

Wei WANG1,Xinrui LI1,Liuguo YIN1,Guoan ZHANG1,Shibing ZHANG1   

  1. 1 School of Electronics and Information,Nantong University,Nantong 226019,China
    2 Nantong Research Institute for Advanced Communication Technologies,Nantong 226019,China
    3 School of Information Science and Technology,Tsinghua University,Beijing 100084,China
  • Revised:2018-12-24 Online:2019-01-01 Published:2019-02-03
  • Supported by:
    The National Natural Science Foundation of China(61771263);The National Natural Science Foundation of China(61871241);The Six Categories Talent Peak of Jiangsu Province(KTHY-039);The Science and Technology Program of Nantong(GY22017013)

摘要:

针对能量受限中继系统的无线物理层安全问题,提出了一种基于无线信能同传的安全传输方案。该方案在节点传输功率和中继收集能量等条件共同约束下,通过对功率分配因子和传输功率等参数的联合优化来实现系统保密速率最大化。对于提出的非凸优化问题,首先采用分步优化方法分别优化功率分配因子和传输功率,得到其闭式解,然后使用收敛迭代算法求出原问题的次优解。数值仿真分析了人工噪声强度、剩余自干扰大小、节点传输功率及中继放大倍数等不同因素对系统安全性能的影响。与传统的梯度下降法相比,所提联合优化算法在性能略好的前提下可降低时间复杂度80%以上。

关键词: 物理层安全, 全双工节点, 无线信能同传, 资源分配, 保密速率

Abstract:

Taking into account the wireless physical layer security in energy-constrained relaying systems,a secure resource allocation scheme was proposed under simultaneous wireless information and power transfer (SWIPT) protocol.The utility optimization problem was considered aiming to maximize the secrecy rate by jointly optimizing the power splitting (PS) ratio and the transmit powers under the constraint of the transmit powers of the nodes and the harvested energy of the relay.The objective problem,which is non-convex,was decoupled into two subproblems.One was to optimize the PS ratio,another was to optimize the transmit powers.The optimal solution of the subproblems can be obtained in the closed-form.Then,the suboptimal solution is obtained with the proposed convergent iterative algorithm.Simulation results show the effects of artificial noise signal,residual self-interference signal,transmit power of nodes,amplification factor of relay and other factors on the security performance.Compared with the traditional gradient descent algorithm,the proposed algorithm can reduce more than 80% of the computational load,while the algorithm has the slightly better performance.

Key words: physical layer security, full-duplex node, simultaneous wireless information and power transfer

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