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Intelligent reflecting surface (IRS) and unmanned aerial vehicle (UAV) have emerged as two promising technologies to boost the performance of wireless communication networks, by proactively altering the wireless communication channels via…

信息论 · 计算机科学 2021-03-30 Changsheng You , Zhenyu Kang , Yong Zeng , Rui Zhang

We propose a reconfigurable intelligent surface (RIS)-assisted wiretap channel, where the RIS is strategically deployed to provide a spatial separation to the transmitter, and orthogonal combiners are employed at the legitimate receiver to…

信息论 · 计算机科学 2025-01-31 Xudong Li , Matthias Frey , Ehsan Tohidi , Igor Bjelaković , Sławomir Stańczak

Wireless networks are a common place nowadays and almost all of the modern devices support wireless communication in some form. These networks differ from more traditional computing systems due to the ad-hoc and spontaneous nature of…

网络与互联网体系结构 · 计算机科学 2010-07-15 Yasir Arfat Malkani , Lachhman Das Dhomeja

Reconfigurable Intelligent Surfaces (RIS) have emerged as a transformative technology in wireless communication, enabling dynamic control over signal propagation. This paper tackles the challenge of mitigating Channel State Information…

信号处理 · 电气工程与系统科学 2025-09-23 Mahdi Shamsi , Hadi Zayyani , Farokh Marvasti

Wireless vehicular network (WVN) is exponentially gaining attention from industries and researchers since it is the Keystone of intelligent transportation systems (ITS). Despite the sophisticated features and services that it can offer, it…

信号处理 · 电气工程与系统科学 2020-10-15 Neji Mensi , Danda B. Rawat , Elyes Balti

By adding users as a new dimension to connectivity, on-body Internet-of-Things (IoT) devices have gained considerable momentum in recent years, while raising serious privacy and safety issues. Existing approaches to authenticate these…

密码学与安全 · 计算机科学 2020-05-25 Yong Huang , Wei Wang , Hao Wang , Tao Jiang , Qian Zhang

Underutilized wireless channel is a waste of spectral resource. Eavesdropping compromises data secrecy. How to overcome the two problems with one solution? In this paper, we propose a spectrum sharing model that defends against…

网络与互联网体系结构 · 计算机科学 2021-09-21 Yee-Loo Foo

Deep learning technologies are pivotal in enhancing the performance of WiFi-based wireless sensing systems. However, they are inherently vulnerable to adversarial perturbation attacks, and regrettably, there is lacking serious attention to…

密码学与安全 · 计算机科学 2024-04-25 Hangcheng Cao , Wenbin Huang , Guowen Xu , Xianhao Chen , Ziyang He , Jingyang Hu , Hongbo Jiang , Yuguang Fang

Spectrum sensing is a key enabling technique for cognitive radio (CR), which provides essential information on the spectrum availability. However, due to severe wireless channel fading and path loss, the primary user (PU) signals received…

信息论 · 计算机科学 2022-02-08 Shaoe Lin , Beixiong Zheng , Fangjiong Chen , Rui Zhang

Unlike conventional anti-eavesdropping methods that always require additional energy or computing resources (e.g., in friendly jamming and cryptography-based solutions), this work proposes a novel anti-eavesdropping solution that comes with…

Traditional physical layer secure beamforming is achieved via precoding before signal transmission using channel state information (CSI). However, imperfect CSI will compromise the performance with imperfect beamforming and potential…

信号处理 · 电气工程与系统科学 2024-02-02 Tongyang Xu , Zhongxiang Wei , Tianhua Xu , Gan Zheng

Intelligent reflecting surface (IRS) has drawn a lot of attention recently as a promising new solution to achieve high spectral and energy efficiency for future wireless networks. By utilizing massive low-cost passive reflecting elements,…

信息论 · 计算机科学 2022-10-17 Ming-Min Zhao , Qingqing Wu , Min-Jian Zhao , Rui Zhang

Adversarial attack serves as a major challenge for neural network models in NLP, which precludes the model's deployment in safety-critical applications. A recent line of work, detection-based defense, aims to distinguish adversarial…

计算与语言 · 计算机科学 2023-02-07 Lingfeng Shen , Ze Zhang , Haiyun Jiang , Ying Chen

Instead of against eavesdropping, this letter proposes a new paradigm in wireless security by studying how a legitimate monitor (e.g., government agencies) efficiently eavesdrops a suspicious wireless communication link. The suspicious…

信息论 · 计算机科学 2015-11-05 Jie Xu , Lingjie Duan , Rui Zhang

To enhance the national security, there is a growing need for government agencies to legitimately monitor suspicious communication links for preventing intended crimes and terror attacks. In this paper, we propose a new wireless information…

信息论 · 计算机科学 2017-02-07 Jie Xu , Lingjie Duan , Rui Zhang

Due to the broadcast nature of radio propagation, the wireless transmission can be readily overheard by unauthorized users for interception purposes and is thus highly vulnerable to eavesdropping attacks. To this end, physical-layer…

信息论 · 计算机科学 2016-11-15 Yulong Zou , Jia Zhu , Xianbin Wang , Victor C. M. Leung

Intelligent reflecting surface (IRS) has emerged as a promising technique to control wireless propagation environment for enhancing the communication performance cost-effectively. However, the rapidly time-varying channel in high-mobility…

信息论 · 计算机科学 2023-02-16 Zixuan Huang , Beixiong Zheng , Rui Zhang

Wireless Sensor Network (WSN) is consisting of independent and distributed sensors to monitor physical or environmental conditions, such as temperature, sound, pressure, etc. The most crucial and fundamental challenge facing WSN is…

密码学与安全 · 计算机科学 2016-09-20 Yassine Maleh , Abdellah Ezzati

Integrated sensing and communication is a key feature in next-generation wireless networks, enabling joint data transmission and environmental radar sensing on shared spectrum. In multi-user scenarios, simultaneous transmissions cause…

信号处理 · 电气工程与系统科学 2026-01-30 Laurits Randers , Martin Voigt Vejling , Petar Popovski

Localization services for wireless devices play an increasingly important role in our daily lives and a plethora of emerging services and applications already rely on precise position information. Widely used on-device positioning methods,…

信号处理 · 电气工程与系统科学 2024-01-17 Pengzhi Huang , Emre Gönültaş , Maximilian Arnold , K. Pavan Srinath , Jakob Hoydis , Christoph Studer