用于安全空时线性编码系统的人工噪声注入及其功率加载方法

Artificial Noise Injection and Its Power Loading Methods for Secure Space-Time Line Coded Systems.

作者信息

Joung Jingon, Choi Jihoon, Jung Bang Chul, Yu Sungwook

机构信息

School of Electrical and Electronics Engineering, Chung-Ang University, Seoul 06974, Korea.

School of Electronics and Information Engineering, Korea Aerospace University, Gyeonggi-do 10540, Korea.

出版信息

Entropy (Basel). 2019 May 22;21(5):515. doi: 10.3390/e21050515.

DOI:10.3390/e21050515

PMID:33267229

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7515004/

Abstract

In this paper, we consider a 2 × 2 space-time line coded (STLC) system having two-transmit and two-receive antennas. To improve the secrecy rate of the STLC system, in which an illegitimate receiver eavesdrops the information delivered from the STLC transmitter to the STLC receiver, we propose an artificial noise (AN) injection method. By exploiting the STLC structure, a novel AN for the STLC is designed and its optimal power loading factor is derived. Numerical results verify that the proposed secure STLC systems with the designed AN injection and the power control method can significantly improve the secrecy rate compared to the conventional STLC systems. It is observed that the proposed method is more effective if there is a significant gap between the main-channel and the eavesdropper-channel gains.

摘要

在本文中，我们考虑一个具有两个发射天线和两个接收天线的2×2空时线性编码（STLC）系统。为了提高STLC系统的保密率，其中非法接收者窃听从STLC发射机传送到STLC接收机的信息，我们提出一种人工噪声（AN）注入方法。通过利用STLC结构，设计了一种用于STLC的新型人工噪声，并推导了其最优功率加载因子。数值结果验证了所提出的具有设计的人工噪声注入和功率控制方法的安全STLC系统与传统STLC系统相比能够显著提高保密率。可以观察到，如果主信道和窃听者信道增益之间存在显著差距，所提出的方法会更有效。