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Fluid antenna (FA) has become a highly promising technology and has recently been used to enhance the integrated sensing and communication (ISAC) system. However, the scenario where sensing targets act as eavesdroppers in ISAC and how to…

Information Theory · Computer Science 2026-02-27 Yunxiao Li , Qian Zhang , Xuejun Cheng , Zhiguo Wang , Xiaoyan Wang , Hongji Xu , Ju Liu

Physical Layer Security (PLS) is an emerging concept in the field of secrecy for wireless communications that can be used alongside cryptography to prevent unauthorized devices from eavesdropping a legitimate transmission. It offers low…

Signal Processing · Electrical Eng. & Systems 2025-04-24 Leonardo Barbosa da Silva , Evelio Martín Garcia Fernández , Ândrei Camponogara

This paper investigates the performance of physical layer security (PLS) in a vehicle-to-vehicle (V2V) communication system, where a transmitter vehicle exploits a dual reconfigurable intelligent surface (RIS) to send confidential…

Information Theory · Computer Science 2024-10-08 Farshad Rostami Ghadi , Masoud Kaveh , Kai-Kit Wong , Diego Martin

This paper investigates the physical layer security (PLS) of a broadband in-home power line communication (PLC) system when a malicious wireless device tries to eavesdrop private messages exchanged between two PLC devices. Such a security…

Signal Processing · Electrical Eng. & Systems 2020-12-30 Ândrei Camponogara , H. Vincent Poor , Moisés V. Ribeiro

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

Physical layer security (PLS) technology based on the fixed-position antenna (FPA) has {attracted widespread attention}. Due to the fixed feature of the antennas, current FPA-based PLS schemes cannot fully utilize the spatial degree of…

Information Theory · Computer Science 2024-05-28 Zhiyong Feng , Yujia Zhao , Kan Yu , Dong Li

This paper leverages fluid antenna (FA) and rate-splitting multiple access (RSMA) to enhance the physical layer security (PLS) of an integrated sensing and communication (ISAC) system. We consider a practical multi-user multi-input…

Information Theory · Computer Science 2025-03-18 Cixiao Zhang , Yin Xu , Size Peng , Xinghao Guo , Xiaowu Ou , Hanjiang Hong , Dazhi He , Wenjun Zhang

We propose a new security framework for physical layer security (PLS) in the finite blocklength (FBL) regime that incorporates deception technology, allowing for active countermeasures against potential eavesdroppers. Using a symmetric…

Information Theory · Computer Science 2023-07-21 Bin Han , Yao Zhu , Anke Schmeink , Hans D. Schotten

Physical-layer security (PLS) is a promising technique to complement more traditional means of communication security in beyond-5G wireless networks. However, studies of PLS are often based on ideal assumptions such as infinite coding…

Information Theory · Computer Science 2024-05-14 Milad Tatar Mamaghani , Xiangyun Zhou , Nan Yang , A. Lee Swindlehurst , H. Vincent Poor

This paper investigates fluid antenna systems (FASs) subject to finite-blocklength (FBL) constraints, motivated by the strict reliability-latency and ultra-massive connectivity requirements of future wireless networks. While FAS performance…

Information Theory · Computer Science 2026-04-02 Zhentian Zhang , Kai-Kit Wong , David Morales-Jimenez , Hao Jiang , Hao Xu , Christos Masouros , Zaichen Zhang , Chan-Byoung Chae

In this paper, we study the physical layer security (PLS) problem in the dual hop orthogonal frequency division multiplexing (OFDM) based wireless communication system. First, we consider a single user single relay system and study a joint…

Information Theory · Computer Science 2018-03-15 Waqas Aman , Guftaar Ahmad Sardar Sidhu , Haji M. Furqan , Zain Ali

In this correspondence, we analyze the performance of a reconfigurable intelligent surface (RIS)-aided communication system that involves a fluid antenna system (FAS)-enabled receiver. By applying the central limit theorem (CLT), we derive…

Signal Processing · Electrical Eng. & Systems 2024-08-27 Xiazhi Lai , Junteng Yao , Kangda Zhi , Tuo Wu , David Morales-Jimenez , Kai-Kit Wong

This paper proposes a robust beamforming (BF) scheme to enhance physical layer security (PLS) of the downlink of a multibeam satellite system in the presence of either uncoordinated or coordinated eavesdroppers (Eves). Specifically, with…

Information Theory · Computer Science 2021-05-14 Jian Zhang , Min Lin , Jian Ouyang , Wei-Ping Zhu , Tomaso de Cola

In this paper, we study robust beamforming design for near-field physical-layer-security (PLS) systems, where a base station (BS) equipped with an extremely large-scale array (XL-array) serves multiple near-field legitimate users (Bobs) in…

Signal Processing · Electrical Eng. & Systems 2026-01-21 Chao Zhou , Changsheng You , Cong Zhou , Chengwen Xing , Jianhua Zhang

Due to the broadcast nature of wireless medium, wireless communication is highly vulnerable to eavesdropping attack. Traditionally, secure wireless data transmission has relied on cryptographic techniques at the network layer which incur…

Information Theory · Computer Science 2018-06-08 Binh Van Nguyen , Hyoyoung Jung , Kiseon Kim

Reconfigurable intelligent surface (RIS)-aided wireless communications have drawn significant attention recently. We study the physical layer security of the downlink RIS-aided transmission framework for randomly located users in the…

Information Theory · Computer Science 2021-04-09 Jiayi Zhang , Hongyang Du , Qiang Sun , Bo Ai , Derrick Wing Kwan Ng

With the development of sixth-generation (6G) wireless communication networks, the security challenges are becoming increasingly prominent, especially for mobile users (MUs). As a promising solution, physical layer security (PLS) technology…

Signal Processing · Electrical Eng. & Systems 2026-02-17 Wenxuan Ma , Bin Lin , Hongyang Pan , Geng Sun , Enyu Shi , Jiancheng An , Chau Yuen

This paper investigates the downlink (DL) physical layer security (PLS) in a near-field (NF) extra-large multiple-input multiple-output MIMO (XL-MIMO) system. To enhance the secrecy rate (SR), null-space artificial noise (AN) is transmitted…

Information Theory · Computer Science 2025-03-19 Xiangjun Ma , Ali Arshad Nasir , Daniel Benevides da Costa

The pinching-antenna system (PASS) introduces new degrees of freedom (DoFs) for physical layer security (PLS) through pinching beamforming. In this paper, a couple of scenarios for secure beamforming for PASS are studied. 1) For the case…

Signal Processing · Electrical Eng. & Systems 2025-07-04 Mingjun Sun , Chongjun Ouyang , Shaochuan Wu , Yuanwei Liu

Enormous fluid antenna systems (E-FAS) have recently emerged as a surface-wave (SW)-enabled architecture that can induce controllable large-scale channel gains through guided electromagnetic routing. This paper develops a secrecy analysis…

Information Theory · Computer Science 2026-03-30 Farshad Rostami Ghadi , Kai-Kit Wong , Masoud Kaveh , Mohammad Javad Ahmadi , Kin-Fai Tong , Hyundong Shin