Covert Ambient Backscatter Communications With Information Transmission Time Uncertainty

被引：1
|
作者：
He, Wenhui [1 ]
Chen, Jin [1 ]
Li, Guoxin [1 ]
Xu, Yifan [1 ]
He, Rongrong [1 ]
Wang, Haichao [1 ]
Jiao, Yutao [1 ]
机构：
[1] Army Engn Univ PLA, Coll Commun Engn, Nanjing 210007, Peoples R China
来源：
IEEE WIRELESS COMMUNICATIONS LETTERS | 2024年 / 13卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Uncertainty; Information processing; Backscatter; Error probability; RF signals; Wireless communication; Radiometry; Covert communications; ambient backscatter; time domain uncertainty;
D O I：
10.1109/LWC.2023.3346376
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 this letter, we investigate an ambient backscatter communications (ABC) system utilizing the information transmission time uncertainty embedded in the transmitter's modulation scheme to achieve covert transmission. We analytically derive the closed-form expressions of minimum detection error probability and transmission outage probability. In order to achieve a covertness-enhancing design, we maximize the minimum detection error probability under an effective transmission rate requirement by joint reflection probability and coefficient optimization. To solve this complex two-dimensional problem, we degrade it to a one-dimensional one by mathematical proof. Numerical results validate our analysis and the superiority of the proposed scheme compared with the benchmark.
引用
收藏
页码：834 / 838
页数：5
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