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Differential Space-Time Line Code Hopping Method for Improving Covert Secrecy Rate

delete2026-02-06
delete0
PRE
AI
J
Jingon Joung
S
Sinuk Choi
J
Jae-Won Kim
E
Eui–Rim Jeong
C
Chau Yuen
DOI：10.1109/TIFS.2026.3661869delete
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摘要

摘要

En 中文
本研究考虑了隐蔽与安全通信，其中发送方Alice向合法接收方Bob发送信息，采用差分空时线码（Diff-STLC）方案。窃密者Willie试图基于信号强度检测Alice的传输。在成功检测后，Willie成为窃听者（Eve），并开始窃听信息。Willie和Eve分别是针对隐蔽通信和安全通信的对手。为增强传统Diff-STLC系统的有限保密性，我们提出了一种编码跳跃策略，通过在两种Diff-STLC结构间随机切换。因此，只有知晓跳跃模式的Bob才能解码信号。为量化隐蔽性与保密性，我们定义隐蔽保密速率（CSR）为Bob与Eve可实现速率之差。利用Willie的检测概率及Eve与Bob的比特误码率，我们推导出CSR的解析下界。解析结果与蒙特卡洛仿真结果均证实，所提出的Diff-STLC跳跃方法能显著提升CSR性能，从而改善通信的整体隐蔽性与保密性。
Keyword:
Differential space-time line code
code hopping
covert communications
secure communications
covert secrecy rate

期刊

IEEE Transactions on Information Forensics and Security 封面图
IEEE Transactions on Information Forensics and Security
IF:
8
论文数:
5.3K
被引数:
2.3W

机构

H
hanbat national university
学者数:
135
论文数: 73
被引数: 0
C
chung-ang university
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1.4K
论文数: 617
被引数: 0
A
agency for defense development
学者数:
49
论文数: 27
被引数: 0
N
nanyang technological university
学者数:
2.5K
论文数: 1.6K
被引数: 1
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