Cooperative interference power allocation in physical layer security under imperfect time synchronization

Wenbo GUO; Changqing SONG; Rong WEN; Hongzhi ZHAO; Youx TANG

doi:10.11959/j.issn.1000-436x.2019214

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Cooperative interference power allocation in physical layer security under imperfect time synchronization

Papers | 更新时间：2024-06-05

- Cooperative interference power allocation in physical layer security under imperfect time synchronization
- Journal on Communications Vol. 40, Issue 11, Pages: 86-93(2019)
- 作者机构：
  
  1. 电子科技大学通信抗干扰技术国家级重点实验室，四川成都 611731
  2. 成都工业学院网络与通信工程学院，四川成都 611730
- 作者简介：
- 基金信息：
  
  The National Key Research and Development Program of China(2018YFB1801903);The National Natural Science Foundation of China(61771115);The National Natural Science Foundation of China(61771107);The National Natural Science Foundation of China(61701075);The National Natural Science Foundation of China(61531009);The Nationa1 Major Projects of China(2016ZX03001009);Sichuan Science and Technology Program(2019JDRC0006)
- DOI：10.11959/j.issn.1000-436x.2019214
  CLC： TN975
- Online First：2019-11，
  
  Published：25 November 2019
- 稿件说明：
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Wenbo GUO, Changqing SONG, Rong WEN, et al. Cooperative interference power allocation in physical layer security under imperfect time synchronization[J]. Journal on Communications, 2019, 40(11): 86-93.
DOI：

Wenbo GUO, Changqing SONG, Rong WEN, et al. Cooperative interference power allocation in physical layer security under imperfect time synchronization[J]. Journal on Communications, 2019, 40(11): 86-93. DOI： 10.11959/j.issn.1000-436x.2019214.

摘要

物理层安全中，考虑不完美时间同步，提出了一种使通信系统保密容量最大化的协同干扰功率分配方法。通过分析授权接收机处由不完美时间同步引入的残余干扰功率，给出了最优功率分配方法，并讨论了最优干扰功率与相对信道质量之间的关系。理论和仿真分析表明，当同步误差较小时，需要消耗额外功率来达到预设的保密容量，且干扰功率随误差增大而增大；随着误差进一步增大，系统保密容量渐渐无法达到预设目标，甚至可能降至0。

Abstract

In physical layer security

considering imperfect time synchronization

a power allocation scheme was proposed to maximize the system secrecy capacity.By analyzing the residual interference power at the authorized receiver caused by imperfect time synchronization

the optimal power distribution method was given

and the relationship between the optimal interference power and the relative channel quality was discussed.Theory and simulation analysis show that when the synchronization error is small

the synchronization error consumes extra power to reach the preset secrecy capacity

and the interference power increases with its increase.As the synchronization error increases

the secrecy capacity of the system gradually fails to reach the preset target

and may even drop to zero.

关键词

Keywords

references

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