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Spatial filtering based on multiple-input multiple-output (MIMO) processing is a promising approach to jammer mitigation. Effective MIMO data detectors that mitigate smart jammers have recently been proposed, but they all assume perfect…

信号处理 · 电气工程与系统科学 2025-01-28 Gian Marti , Flurin Arquint , Christoph Studer

In this paper, we enhance physical layer security for downlink heterogeneous networks (HetNets) by using friendly jammers and full-duplex users. The jammers are selected to transmit jamming signal if their interfering power on the scheduled…

信息论 · 计算机科学 2017-09-20 Weijun Tang , Suili Feng , Yuehua Ding , Yuan Liu

Data association in SLAM is fundamentally challenging, and handling ambiguity well is crucial to achieve robust operation in real-world environments. When ambiguous measurements arise, conservatism often mandates that the measurement is…

机器人学 · 计算机科学 2019-03-07 Kristoffer M. Frey , Ted J. Steiner , Jonathan P. How

This letter proposes anti-jamming strategies based on pilot retransmission for a single user uplink massive MIMO under jamming attack. A jammer is assumed to attack the system both in the training and data transmission phases. We first…

信息论 · 计算机科学 2016-11-28 Tan Tai Do , Hien Quoc Ngo , Trung Q. Duong , Tobias J. Oechtering , Mikael Skoglund

In this paper, we propose an algorithm for channel sensing, collaboration, and transmission for networks of Tactical Communication Systems that are facing intrusions from hostile Jammers. Members of the network begin by scanning the…

网络与互联网体系结构 · 计算机科学 2020-03-17 Bryan Gingras , Ali Pourranjbar , Georges Kaddoum

In this paper, utilizing the relay buffers, we propose an opportunistic decode-wait-and-forward relay scheme for a point-to-point communication system with a half-duplexing relay network to better exploit the time diversity and relay…

信息论 · 计算机科学 2009-08-10 Rui Wang , Vincent K. N. Lau , Kaibin Huang

Compute-and-forward (CF) is a relaying strategy which allows the relay to decode a linear combination of the transmitted messages. This work studies the optimal power allocation problem for the CF scheme in fast fading channels for…

信息论 · 计算机科学 2024-11-18 Lanwei Zhang , Jamie Evans , Jingge Zhu

In this paper, we study the problem of physical layer security in the uplink of millimeter-wave massive multiple-input multiple-output (MIMO) networks and propose a jamming detection and suppression method. The proposed method is based on…

信息论 · 计算机科学 2021-04-06 Saeed Bagherinejad1 , S. Mohammad Razavizadeh

The large scale reflector array of programmable metasurfaces is capable of increasing the power efficiency of backscatter communications via passive beamforming and thus has the potential to revolutionize the low-data-rate nature of…

信号处理 · 电气工程与系统科学 2023-03-31 Wei Wang , Bincheng Zhu , Yongming Huang , Wei Zhang

The spectrum share and open nature of wireless channels enable integrated sensing and communication (ISAC) susceptible to hostile jamming attacks. Due to the intrinsic orthogonality and rich azimuth angle information of orbital angular…

信号处理 · 电气工程与系统科学 2024-06-11 Liping Liang , Wenchi Cheng , Wei Zhang , Zhuohui Yao

This study investigates the problem of communication for a network composed of two half-duplex parallel relays with additive white Gaussian noise. Two protocols, i.e., \emph{Simultaneous} and \emph{Successive} relaying, associated with two…

信息论 · 计算机科学 2016-11-17 Seyed Saeed Changiz Rezaei , Shahab Oveis Gharan , Amir K. Khandani

We consider the wireless Rayleigh fading relay channel with finite complex input constellations. Assuming global knowledge of the channel state information and perfect synchronization, upper and lower bounds on the achievable rate, for the…

信息论 · 计算机科学 2011-02-22 Vijayvaradharaj T Muralidharan , B. Sundar Rajan

The dynamic competition between radar and jammer systems presents a significant challenge for modern Electronic Warfare (EW), as current active learning approaches still lack sample efficiency and fail to exploit jammer's characteristics.…

信号处理 · 电气工程与系统科学 2024-07-12 Liangqi Liu , Wenqiang Pu , Yingru Li , Bo Jiu , Zhi-Quan Luo

Jamming attacks target a wireless network creating an unwanted denial of service. 5G is vulnerable to these attacks despite its resilience prompted by the use of millimeter wave bands. Over the last decade, several types of jamming…

信息论 · 计算机科学 2020-03-17 Youness Arjoune , Fatima Salahdine , Md. Shoriful Islam , Elias Ghribi , Naima Kaabouch

We propose a pilot-data transmission overlay scheme for multipair massive multiple-input multiple-output (MIMO) relaying systems employing either half- or full-duplex (HD or FD) communications at the relay station (RS). In the proposed…

信息论 · 计算机科学 2016-06-06 Leyuan Pan , Yongyu Dai , Wei Xu , Xiaodai Dong

State-of-the-art solutions detect jamming attacks ex-post, i.e., only when jamming has already disrupted the wireless communication link. In many scenarios, e.g., mobile networks or static deployments distributed over a large geographical…

密码学与安全 · 计算机科学 2026-03-02 Martijn Hanegraaf , Savio Sciancalepore , Gabriele Oligeri

Mobile edge caching (MEC) has received much attention as a promising technique to overcome the stringent latency and data hungry requirements in the future generation wireless networks. Meanwhile, full-duplex (FD) transmission can…

信息论 · 计算机科学 2019-11-01 Thang X. Vu , Symeon Chatzinotas , Björn Ottersten , Anh Vu Trinh

Satellite constellations in low-Earth orbit are now widespread, enabling positioning, Earth imaging, and communications. In this paper we address the solution of learning problems using these satellite constellations. In particular, we…

Coded modulation (CM) is the combination of forward error correction (FEC) and multilevel constellations. Coherent optical communication systems result in a four-dimensional (4D) signal space, which naturally leads to 4D-CM transceivers. A…

信息论 · 计算机科学 2024-01-25 Alex Alvarado , Erik Agrell

We consider a wireless network comprising multiple singleantenna repeaters that amplify and instantaneously re-transmit received signals in a full-duplex (FD) communication setting. Specifically, we study a massive multiple-input multiple…