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The identification of the devices from which a message is received is part of security mechanisms to ensure authentication in wireless communications. Conventional authentication approaches are cryptography-based, which, however, are…

密码学与安全 · 计算机科学 2025-06-12 Junqing Zhang , Francesco Ardizzon , Mattia Piana , Guanxiong Shen , Stefano Tomasin

The utilization of radio frequency (RF) signals for wireless sensing has garnered increasing attention. However, the radio environment is unpredictable and often unfavorable, the sensing accuracy of traditional RF sensing methods is often…

信号处理 · 电气工程与系统科学 2025-08-08 Zhaowei Wang , Yunsong Huang , Weicheng Liu , Hui-Ming Wang

This paper considers unmanned aerial vehicle (UAV)-carried intelligent reflecting surface (IRS) for secure data collection in wireless sensor networks. An eavesdropper (Eve) lurks within the vicinity of the main receiver (Bob) while several…

信息论 · 计算机科学 2021-01-19 Christantus O. Nnamani , Muhammad R. A. Khandaker , Mathini Sellathurai

Accurate face recognition techniques make a series of critical applications possible: policemen could employ it to retrieve criminals' faces from surveillance video streams; cross boarder travelers could pass a face authentication…

密码学与安全 · 计算机科学 2018-03-14 Zhe Zhou , Di Tang , Xiaofeng Wang , Weili Han , Xiangyu Liu , Kehuan Zhang

Infrared Small Target Detection (IRSTD) aims to segment small targets from infrared clutter background. Existing methods mainly focus on discriminative approaches, i.e., a pixel-level front-background binary segmentation. Since infrared…

计算机视觉与模式识别 · 计算机科学 2024-03-14 Haoqing Li , Jinfu Yang , Yifei Xu , Runshi Wang

The multi-sector intelligent surface (IS), benefiting from a smarter wave manipulation capability, has been shown to enhance channel gain and offer full-space coverage in communications. However, the benefits of multi-sector IS in wireless…

信号处理 · 电气工程与系统科学 2024-06-26 Yumeng Zhang , Xiaodan Shao , Hongyu Li , Bruno Clerckx , Rui Zhang

Recent advancements in Ultra-Wideband (UWB) radar technology have enabled contactless, non-line-of-sight vital sign monitoring, making it a valuable tool for healthcare. However, UWB radar's ability to capture sensitive physiological data,…

人机交互 · 计算机科学 2025-05-19 Md Farhan Tasnim Oshim , Nigel Doering , Bashima Islam , Tsui-Wei Weng , Tauhidur Rahman

Neural networks are increasingly used for intrusion detection on industrial control systems (ICS). With neural networks being vulnerable to adversarial examples, attackers who wish to cause damage to an ICS can attempt to hide their attacks…

密码学与安全 · 计算机科学 2021-10-05 Giulio Zizzo , Chris Hankin , Sergio Maffeis , Kevin Jones

Physical layer security offers an efficient means to decrease the risk of confidential information leakage through wiretap links. In this paper, we address the physical-layer security in a cooperative wireless subnetwork that includes a…

网络与互联网体系结构 · 计算机科学 2019-10-21 Saeed Vahidian , Sajad Hatamnia , Benoit Champagne

The increasing demand for wireless networks of higher capacity requires key-enabling technologies. Optical wireless communication (OWC) arises as a complementary technology to radio frequency (RF) systems that can support high aggregate…

信号处理 · 电气工程与系统科学 2024-04-03 Ahrar N. Hamad , Walter Zibusiso Ncube , Ahmad Adnan Qidan , Taisir E. H. El-Gorashi , Jaafar M. H. Elmirghani

We introduce and investigate the ability of an attacker to surreptitiously use an otherwise secure wireless network to detect moving people through walls, in an area in which people expect their location to be private. We call this attack…

密码学与安全 · 计算机科学 2013-07-30 Arijit Banerjee , Dustin Maas , Maurizio Bocca , Neal Patwari , Sneha Kasera

The intrinsic hardware imperfection of WiFi chipsets manifests itself in the transmitted signal, leading to a unique radiometric fingerprint. This fingerprint can be used as an additional means of authentication to enhance security. In…

密码学与安全 · 计算机科学 2020-11-30 Luis F. Abanto-Leon , Andreas Baeuml , Gek Hong , Sim , Matthias Hollick , Arash Asadi

Machine learning finds rich applications in Internet of Things (IoT) networks such as information retrieval, traffic management, spectrum sensing, and signal authentication. While there is a surge of interest to understand the security…

网络与互联网体系结构 · 计算机科学 2019-06-04 Yalin E. Sagduyu , Yi Shi , Tugba Erpek

The physical layer security (PLS) performance of a wireless communication link through a large reflecting surface (LRS) with phase errors is analyzed. Leveraging recent results that express the \ac{LRS}-based composite channel as an…

信息论 · 计算机科学 2024-10-30 Jose David Vega Sanchez , Pablo Ramirez-Espinosa , F. Javier Lopez-Martinez

Deep neural networks have empowered accurate device-free human activity recognition, which has wide applications. Deep models can extract robust features from various sensors and generalize well even in challenging situations such as…

密码学与安全 · 计算机科学 2022-12-05 Jianfei Yang , Han Zou , Lihua Xie

The concept of reconfiguring wireless propagation environments using intelligent reflecting surfaces (IRS)s has recently emerged, where an IRS comprises of a large number of passive reflecting elements that can smartly reflect the impinging…

The widespread application of automatic speech recognition (ASR) supports large-scale voice surveillance, raising concerns about privacy among users. In this paper, we concentrate on using adversarial examples to mitigate unauthorized…

密码学与安全 · 计算机科学 2025-04-02 Weifei Jin , Yuxin Cao , Junjie Su , Derui Wang , Yedi Zhang , Minhui Xue , Jie Hao , Jin Song Dong , Yixian Yang

Intelligent reflecting surface (IRS) is a promising technology to improve the performance of backscatter communication systems by smartly reconfiguring the multi-reflection channel. To fully exploit the passive beamforming gain of IRS in…

信息论 · 计算机科学 2021-03-17 Samith Abeywickrama , Changsheng You , Rui Zhang , Chau Yuen

People use mobile devices ubiquitously for computing, communication, storage, web browsing, and more. As a result, the information accessed and stored within mobile devices, such as financial and health information, text messages, and…

密码学与安全 · 计算机科学 2023-08-09 Brian Tang , Kang G. Shin

Intelligent reflecting/refracting surface (IRS) has recently emerged as a promising solution to reconfigure wireless propagation environment for enhancing the communication performance. In this paper, we study a new IRS-aided high-mobility…

信息论 · 计算机科学 2021-12-14 Zixuan Huang , Beixiong Zheng , Rui Zhang