Analysis of Cooperative Jamming Cancellation With Imperfect Time Synchronization in Physical Layer Security

被引：18

作者：

Guo, Wenbo ^{[1
]}

Song, Changqing ^{[1
]}

Xia, Xiangjie ^{[1
]}

Hu, Fu ^{[1
]}

Zhao, Hongzhi ^{[1
]}

Shao, Shihai ^{[1
]}

Tang, Youxi ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, Natl Key Lab Sci & Technol Commun, Chengdu 611731, Peoples R China

来源：

IEEE WIRELESS COMMUNICATIONS LETTERS | 2021年 / 10卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Synchronization; Jamming; Receivers; Radio frequency; Baseband; Physical layer security; Cooperative jamming; imperfect time synchronization; physical layer security; jamming cancellation ratio; NETWORKS;

D O I：

10.1109/LWC.2020.3030075

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

In physical layer security, imperfect time synchronization results in random mismatch between the received cooperative jamming (CJ) and the reconstructed CJ, leading to performance degradation of CJ cancellation at the authorized receiver. In this letter, the CJ cancellation performance with imperfect time synchronization is analyzed and evaluated by jamming cancellation ratio (JCR). Then, by assuming that the timing error is uniformly distributed within the synchronization accuracy, the expectation and cumulative distribution function (CDF) of JCR are provided. Experimental results confirm the theoretical analysis that imperfect time synchronization causes dramatic performance degradation of CJ cancellation, especially for high jamming-to-noise ratio (JNR).

引用

页码：335 / 338

页数：4

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