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In this paper, we investigate the problem of beam alignment in millimeter wave (mmWave) systems, and design an optimal algorithm to reduce the overhead. Specifically, due to directional communications, the transmitter and receiver beams…

信息论 · 计算机科学 2017-12-29 Morteza Hashemi , Ashutosh Sabharwal , C. Emre Koksal , Ness B. Shroff

This paper examines the secrecy performance of millimeter-wave (mm-Wave) communications with imperfect hardware and uncertain eavesdropper location. We consider a multiple-antenna source communicating with a single-antenna destination using…

信息论 · 计算机科学 2021-01-07 Saeed Mashdour , Majid Moradikia , Phee Lep Yeoh

In this paper, we investigate methods for reducing the likelihood that a message transmitted between two multiantenna nodes is intercepted by an undetected eavesdropper. In particular, we focus on the judicious transmission of artificial…

信息论 · 计算机科学 2015-05-19 Amitav Mukherjee , A. Lee Swindlehurst

We in this paper introduce an advanced eavesdropper that aims to paralyze the artificial-noise-aided secure communications. We consider the M-1-2 Gaussian MISO wiretap channel, which consists of a M-antenna transmitter, a single-antenna…

密码学与安全 · 计算机科学 2018-03-07 Dongyang Xu , Pinyi Ren , James A. Ritcey

The recent trend for extremely massive antenna arrays and high frequencies facilitates localization and sensing, offering increased angular and range resolution. In this letter, we focus on the emerging technology of Dynamic Metasurface…

信号处理 · 电气工程与系统科学 2025-02-25 Ioannis Gavras , George C. Alexandropoulos

We study the problem of remote state estimation in the presence of a passive eavesdropper, under the challenging network environment of no packet receipt acknowledgments. A remote legitimate user estimates the state of a linear plant from…

系统与控制 · 电气工程与系统科学 2023-04-06 Matthew Crimson , Justin M. Kennedy , Daniel E. Quevedo

This paper investigates unmanned aerial vehicle (UAV)-aided jamming technique for enabling physical layer keyless security in scenarios where the exact eavesdropper location is unknown. We assume that the unknown eavesdropper location is…

信息论 · 计算机科学 2020-08-10 Christantus O. Nnamani , Muhammad R. A. Khandaker , Mathini Sellathurai

This paper investigates the potential of movable antennas (MAs) to enhance physical layer security within a multiple-input multiple-output multiple-antenna eavesdropper (MIMOME) system. We consider a practical scenario where the transmitter…

信息论 · 计算机科学 2026-01-22 Lei Xie , Peilan Wang , Guanxiong Shen , Guyue Li , Weidong Mei , Liquan Chen

This paper studies an extremely large-scale reconfigurable intelligent surface (XL-RIS)-aided near-field physical layer security (PLS) communication system, aiming to maximize the secrecy rate by jointly optimizing precoding vector at the…

信息论 · 计算机科学 2026-03-09 Xiaotong Xu , Qian Zhang , Yunxiao Li , Xuejun Cheng , Meihui Liu , Ju Liu

This paper proposes a novel location information aided multiple intelligent reflecting surface (IRS) systems. Assuming imperfect user location information, the effective angles from the IRS to the users are estimated, which is then used to…

信息论 · 计算机科学 2020-08-24 Xiaoling Hu , Caijun Zhong , Yu Zhang , Xiaoming Chen , Zhaoyang Zhang

In a time division broadcast positioning system (TDBPS), a user device (UD) determines its position by obtaining sequential time-of-arrival (TOA) or pseudorange measurements from signals broadcast by multiple synchronized base stations…

信号处理 · 电气工程与系统科学 2021-02-03 Sihao Zhao , Xiao-Ping Zhang , Xiaowei Cui , Mingquan Lu

This paper presents an analysis of target localization accuracy, attainable by the use of MIMO (Multiple-Input Multiple-Output) radar systems, configured with multiple transmit and receive sensors, widely distributed over a given area. The…

信息论 · 计算机科学 2016-11-18 Hana Godrich , Alexander M. Haimovich , Rick S. Blum

GNSS are indispensable for various applications, but they are vulnerable to spoofing attacks. The original receiver autonomous integrity monitoring (RAIM) was not designed for securing GNSS. In this context, RAIM was extended with wireless…

密码学与安全 · 计算机科学 2024-02-07 Wenjie Liu , Panos Papadimitratos

The secrecy degrees of freedom (SDoF) of the Gaussian multiple-input and single-output (MISO) wiretap channel is studied under the assumption that delayed channel state information (CSI) is available at the transmitter and each receiver…

信息论 · 计算机科学 2011-08-09 Sheng Yang , Pablo Piantanida , Mari Kobayashi , Shlomo Shamai

This paper studies secrecy rate optimization in a wireless network with a single-antenna source, a multi-antenna destination and a multi-antenna eavesdropper. This is an unfavorable scenario for secrecy performance as the system is…

信息论 · 计算机科学 2016-08-24 Gan Zheng , Ioannis Krikidis , Jiangyuan Li , Athina P. Petropulu , Bjorn Ottersten

This paper considers secure energy-efficient routing in the presence of multiple passive eavesdroppers. Previous work in this area has considered secure routing assuming probabilistic or exact knowledge of the location and…

网络与互联网体系结构 · 计算机科学 2017-03-16 Azadeh Sheikholeslami , Majid Ghaderi , Hossein Pishro-Nik , Dennis Goeckel

This paper investigates an intelligent reflecting surface (IRS) aided millimeter-wave integrated sensing and communication (ISAC) system. Specifically, based on the passive beam scanning in the downlink, the IRS finds the optimal beam for…

信息论 · 计算机科学 2023-07-04 Renwang Li , Xiaodan Shao , Shu Sun , Meixia Tao , Rui Zhang

This paper investigates integrated localization and communication in a multi-cell system and proposes a coordinated beamforming algorithm to enhance target localization accuracy while preserving communication performance. Within this…

信号处理 · 电气工程与系统科学 2025-02-26 Meidong Xia , Wei Xu , Jindan Xu , Zhenyao He , Zhaohui Yang , Derrick Wing Kwan Ng

We investigate a multi-low Earth orbit (LEO) satellite system that simultaneously provides positioning and communication services to terrestrial user terminals. To address the challenges of accurately acquiring channel state information in…

信号处理 · 电气工程与系统科学 2026-01-21 Yuchen Zhang , Pinjun Zheng , Jie Ma , Henk Wymeersch , Tareq Y. Al-Naffouri

We study the secrecy rate maximization problem in a millimeter wave (mmWave) network, consisting of a base station (BS), multiple intelligent reflecting surfaces (IRSs) (or reconfigurable intelligent surfaces (RISs)), multiple users, and a…

信息论 · 计算机科学 2025-10-02 Anahid Rafieifar , Hosein Ahmadinejad , S. Mohammad Razavizadeh , Jiguang He