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Physical layer authentication (PLA) uses inherent characteristics of the communication medium to provide secure and efficient authentication in wireless networks, bypassing the need for traditional cryptographic methods. With advancements…

Cryptography and Security · Computer Science 2025-08-14 Clifton Paul Robinson , Salvatore D'Oro , Tommaso Melodia

The new wave of adversarial attacks that utilize gradient-related vulnerabilities in neural network-based classifiers makes Network Intrusion Detection Systems more open to such threats. Although state-of-the-art adversarial training…

Cryptography and Security · Computer Science 2026-05-12 Hira Nasir , Eiman Javed , Balawal Shabir , Zunera Jalil , Ahmad Mohsin

With the rapid advancement of 6G, identity authentication has become increasingly critical for ensuring wireless security. The lightweight and keyless Physical Layer Authentication (PLA) is regarded as an instrumental security measure in…

Signal Processing · Electrical Eng. & Systems 2026-03-24 Xiqi Cheng , Rui Meng , Xiaodong Xu , Haixiao Gao , Ping Zhang , Dusit Niyato

This paper introduces an adaptive preprocessing technique to enhance the accuracy of channel state information-based physical layer authentication (CSI-PLA) alleviating CSI variations and inconsistencies in the time domain. To this end, we…

Signal Processing · Electrical Eng. & Systems 2025-12-19 Atsu Kokuvi Angelo Passah , Rodrigo C. de Lamare , Arsenia Chorti

Physical layer security (PLS) is a promising paradigm for safeguarding 6G wireless networks by exploiting the inherent characteristics of wireless channels. However, the efficiency of conventional PLS is often limited by fixed orientation…

Information Theory · Computer Science 2026-05-15 Ailing Zheng , Qingqing Wu , Xingxiang Peng , Qiaoyan Peng , Ziyuan Zheng , Yuxuan Chen , Wen Chen

The rise of wireless technologies has made the Internet of Things (IoT) ubiquitous, but the broadcast nature of wireless communications exposes IoT to authentication risks. Physical layer authentication (PLA) offers a promising solution by…

Machine Learning · Computer Science 2026-03-24 Yijia Guo , Junqing Zhang , Yao-Win Peter Hong , Stefano Tomasin

With the evolution of mobile communication systems toward large-scale arrays, high-frequency operation, and reconfigurable antenna architectures, fluid antenna systems (FAS) operating in the near-field (NF) regime provide new degrees of…

Information Theory · Computer Science 2026-05-12 Peng Zhang , Jian Dang , Miaowen Wen , Ziyang Liu , Chen Zhao , Huaifeng Shi , Chengsheng Pan , Zaichen Zhang

The security of wireless challenge-response Physical Layer Authentication (PLA) based on Orthogonal Frequency Division Multiplexing (OFDM) relies on a sufficiently random fading channel condition, which is commonly assumed in existing…

Networking and Internet Architecture · Computer Science 2026-05-11 Haiyun Liu , Shangqing Zhao , Yao Liu , Zhuo Lu

Signal detection in large multiple-input multiple-output (large-MIMO) systems presents greater challenges compared to conventional massive-MIMO for two primary reasons. First, large-MIMO systems lack favorable propagation conditions as they…

Information Theory · Computer Science 2023-08-23 Jiuyu Liu , Yi Ma , Rahim Tafazolli

Strong authentication in an interconnected wireless environment continues to be an important, but sometimes elusive goal. Research in physical-layer authentication using channel features holds promise as a technique to improve network…

Signal Processing · Electrical Eng. & Systems 2020-09-01 Ken St. Germain , Frank Kragh

Recently, Physical Layer Authentication (PLA) has attracted much attention since it takes advantage of the channel randomness nature of transmission media to achieve communication confidentiality and authentication. In the complex…

Signal Processing · Electrical Eng. & Systems 2025-08-12 Rui Meng , Xiaodong Xu , Bizhu Wang , Hao Sun , Shida Xia , Shujun Han , Ping Zhang

The existence of adversarial data examples has drawn significant attention in the deep-learning community; such data are seemingly minimally perturbed relative to the original data, but lead to very different outputs from a deep-learning…

Machine Learning · Computer Science 2019-11-12 Bai Li , Changyou Chen , Wenlin Wang , Lawrence Carin

We discuss the use of angle of arrival (AoA) as an authentication measure in analog array multiple-input multiple-output (MIMO) systems. A base station equipped with an analog array authenticates users based on the AoA estimated from…

Cryptography and Security · Computer Science 2024-07-12 Muralikrishnan Srinivasan , Linda Senigagliesi , Hui Chen , Arsenia Chorti , Marco Baldi , Henk Wymeersch

We propose a novel physical layer security scheme that exploits an optimization method as a one-way function. The proposed scheme builds on nonsquare differential multiple-input multiple-output (MIMO), which is capable of noncoherent…

Signal Processing · Electrical Eng. & Systems 2023-05-22 Yuma Katsuki , Giuseppe Thadeu Freitas de Abreu , Koji Ishibashi , Naoki Ishikawa

Neural networks are vulnerable to adversarial attacks -- small visually imperceptible crafted noise which when added to the input drastically changes the output. The most effective method of defending against these adversarial attacks is to…

Recent progresses in domain adaptive semantic segmentation demonstrate the effectiveness of adversarial learning (AL) in unsupervised domain adaptation. However, most adversarial learning based methods align source and target distributions…

Computer Vision and Pattern Recognition · Computer Science 2022-06-07 Jiaxing Huang , Dayan Guan , Shijian Lu , Aoran Xiao

Adversarial attacks on Face Recognition (FR) systems have demonstrated significant effectiveness against standalone FR models. However, their practicality diminishes in complete FR systems that incorporate Face Anti-Spoofing (FAS) models,…

Computer Vision and Pattern Recognition · Computer Science 2025-05-20 Fengfan Zhou , Qianyu Zhou , Hefei Ling , Xuequan Lu

The wireless medium contains domain-specific information that can be used to complement and enhance traditional security mechanisms. In this paper we propose ways to exploit the spatial variability of the radio channel response in a rich…

Cryptography and Security · Computer Science 2016-11-18 Liang Xiao , Larry Greenstein , Narayan Mandayam , Wade Trappe

We propose a comprehensive framework exploiting the polarization sensitive array (PLA) to improve the physical layer security of wireless communications. More specifically, the polarization difference among signals is utilized to improve…

Information Theory · Computer Science 2017-10-03 Shiqi Gong , Chengwen Xing , Sheng Chen , Zesong Fei

Robust beamforming design under imperfect channel state information (CSI) is a fundamental challenge in multiuser multiple-input multiple-output (MU-MIMO) systems, particularly when the channel estimation error statistics are unknown.…

Information Theory · Computer Science 2025-12-17 Wenzhuo Zou , Ming-Min Zhao , An Liu , Min-Jian Zhao