Physical Layer Secure Transmission in RF-Powered Energy Harvesting Untrusted Relay Networks

YANG Wei-wei; CHEN Jian; CHEN De-chuan

doi:10.3969/j.issn.0372-2112.2019.08.024

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Physical Layer Secure Transmission in RF-Powered Energy Harvesting Untrusted Relay Networks

更新时间：2025-07-16

- Physical Layer Secure Transmission in RF-Powered Energy Harvesting Untrusted Relay Networks
- Acta Electronica Sinica Vol. 47, Issue 8, Pages: 1792-1796(2019)
- 作者机构：
  
  1. 陆军工程大学通信工程学院,江苏,南京,210007
  2. 武汉中原电子集团有限公司,湖北,武汉,430010
  3. 武汉中元通信股份有限公司,湖北,武汉,430205
  4. 陆军工程大学通信工程学院,江苏,南京,210007
  5. 武汉中原电子集团有限公司,湖北,武汉,430010
  6. 武汉中元通信股份有限公司,湖北,武汉,430205
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China (No.61771487, No.61471393, No.61371122)
- DOI：10.3969/j.issn.0372-2112.2019.08.024
  CLC： TN92
- Published Online：25 August 2019，
  
  Published：2019
- 稿件说明：
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YANG Wei-wei, CHEN Jian, CHEN De-chuan. Physical Layer Secure Transmission in RF-Powered Energy Harvesting Untrusted Relay Networks[J]. Acta Electronica Sinica, 2019, 47(8): 1792-1796.
DOI：

YANG Wei-wei, CHEN Jian, CHEN De-chuan. Physical Layer Secure Transmission in RF-Powered Energy Harvesting Untrusted Relay Networks[J]. Acta Electronica Sinica, 2019, 47(8): 1792-1796. DOI： 10.3969/j.issn.0372-2112.2019.08.024.

摘要

射频能量采集技术为能量受限无线通信系统提供了一种有效的能量供给方式.假设能量受限中继节点具有射频能量采集能力，本文设计了中继非可信情况下的物理层安全传输方案，配置多天线的源节点采用发送天线选择策略来增强中继节点的能量采集性能，目的节点发送人工干扰来抑制非可信中继对保密信息的窃听.在瑞利块衰落信道条件下研究了所提方案的物理层安全性能，推导了系统安全中断概率、连接中断概率和安全吞吐量的闭式表达式.计算机仿真验证了理论推导的正确性，揭示了各系统参数对物理层安全性能的影响关系.

Abstract

Wireless energy harvesting is regarded as a promising energy supply alternative for energy-constrained wireless networks. In this paper

we investigate secure transmission in RF-powered energy harvesting relay networks

where an energy-constrained relay is untrusted. Considering that the energy-constrained relay can harvest energy from RF signals to forward the confidential messages

the source node with multiple antenna employs transmit antenna selection (TAS) to enhance the energy harvesting efficiency of the relay

and the destination node employs artificial interference to enhance security. Closed-form expressions of the secrecy outage probability

connection outage probability and secrecy throughput have been derived. Numerical results verify the accuracy of analytical expressions

and reveal the influence of the system parameters on the secrecy performance.

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