A Discriminatory Channel Estimation Scheme Based on the Aid of Friendly Jammer

Rong Zhang; Xianzhong Xie; Weijia Lei

doi:10.11959/j.issn.1000-0801.2015072

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A Discriminatory Channel Estimation Scheme Based on the Aid of Friendly Jammer

Ressearch and development | 更新时间：2024-06-05

- A Discriminatory Channel Estimation Scheme Based on the Aid of Friendly Jammer
- Telecommunications Science Vol. 31, Issue 3, Pages: 104-108(2015)
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- DOI：10.11959/j.issn.1000-0801.2015072
  CLC：
- Published Online：2015-03，
  
  Published：20 March 2015
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Rong Zhang, Xianzhong Xie, Weijia Lei. A Discriminatory Channel Estimation Scheme Based on the Aid of Friendly Jammer[J]. Telecommunications science, 2015, 31(3): 104-108.
DOI：

Rong Zhang, Xianzhong Xie, Weijia Lei. A Discriminatory Channel Estimation Scheme Based on the Aid of Friendly Jammer[J]. Telecommunications science, 2015, 31(3): 104-108. DOI： 10.11959/j.issn.1000-0801.2015072.

摘要

在物理层安全中，可以通过抑制窃听者信道估计的准确性间接提高合法接收者和窃听者间的接收信号质量差距，从而提高信号传输安全性。给出一种基于友好干扰者协助的区别信道估计机制，该方案借助于友好干扰者发送人工噪声来干扰窃听者的信道估计过程。进一步，基于窃听者的信道估计误差最大化给出了训练序列和人工噪声之间的最优功率分配，更好地抑制了窃听者信道估计的质量。仿真结果表明，新方法能有效地抑制窃听者信道估计的性能，提高合法接收者和窃听者间的接收信号质量差距。

Abstract

In the physical layer security

that inhibiting the accuracy of channel estimation at eavesdropper can indirectly enhance the received signal quality difference between the legitimate receiver and the eavesdropper

thus improving signal transmission security.The proposed discriminatory channel estimation scheme was based on the help of friendly jammer

which was based on artificial noise emitted by friendly jammer to interfere the channel estimation process of the eavesdropper.Further

the optimal power allocation was given between training sequence and artificial noise by maximizing the channel estimation error of the eavesdropper

which can suppress the channel estimation quality of the eavesdropper more effectively.Simulation results show that this method can effectively restrain the channel estimation performance of the eavesdropper

and it can improve the received signal quality gap between the legitimate receiver and the eavesdropper.

关键词

Keywords

references

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