Results 21 to 30 of about 5,473 (232)

Hierarchical coordinated anti-jamming channel access in clustering networks: a multi-leader multi-follower Stackelberg game approach

EURASIP Journal on Advances in Signal Processing, 2021
This paper mainly investigates the multi-user coordinated anti-jamming problem in clustering communication networks. In such kinds of networks, there exist multiple clusters and multiple users who communicate with their receivers simultaneously. Besides,
Yifan Xu, Jin Chen, Zhibin Feng, Kailing Yao, Guoxin Li, Fei Song, Gui Fang   +6 more
doaj   +1 more source

Repeater jamming suppression method for pulse Doppler fuze based on identity recognition and chaotic encryption

Defence Technology, 2021
Pulse Doppler (PD) fuze is widely used in current battlefield. However, with the threat of repeater jamming, especially digital radio frequency memory technology, the deficiency in the anti-repeater jamming of a traditional PD fuze increasingly emerges ...
Jian Dai, Xin-hong Hao, Qiang Liu, Xiao-peng Yan, Ping Li   +4 more
doaj   +1 more source

A discounted‐UCB1‐tuned plus Q‐learning based anti‐jamming routing algorithm for wireless mesh networks

Electronics Letters, 2023
To achieve autonomous anti‐jamming routing for wireless mesh networks (WMNs) under the threat of unknown removable jammers, a Q‐learning anti‐jamming routing algorithm using the improved upper‐confidence‐bound (UCB) algorithm is proposed in this paper ...
Huihui Ding, Quan Zhou, Yingtao Niu, Peng Xiang, Zhanyang Zhou   +4 more
doaj   +1 more source

CAWE-ACNN Algorithm for Coprime Sensor Array Adaptive Beamforming

Sensors
This paper presents a robust adaptive beamforming algorithm based on an attention convolutional neural network (ACNN) for coprime sensor arrays, named the CAWE-ACNN algorithm.
Fulai Liu, Wu Zhou, Dongbao Qin, Zhixin Liu, Huifang Wang, Ruiyan Du   +5 more
doaj   +1 more source

On the Performance of Deep Reinforcement Learning-Based Anti-Jamming Method Confronting Intelligent Jammer

Applied Sciences, 2019
With the development of access technologies and artificial intelligence, a deep reinforcement learning (DRL) algorithm is proposed into channel accessing and anti-jamming.
Yangyang Li, Ximing Wang, Dianxiong Liu, Qiuju Guo, Xin Liu, Jie Zhang, Yitao Xu   +6 more
doaj   +1 more source

A Real-Time Phase Center Variation Compensation Algorithm for the Anti-Jamming GNSS Antennas

IEEE Access, 2020
The anti-jamming antenna is one of the most efficient ways to resist the adversary effect of the interference signal in GNSS positioning. Most anti-jamming antennas can adaptively adjust the radiation figure of the antenna to minimize the interference ...
Kejin Cao, Lei Wang, Bao Li, Hengchao Ma
doaj   +1 more source

A multi‐agent reinforcement learning anti‐jamming method with partially overlapping channels

IET Communications, 2021
This paper investigates the problem of multi‐user anti‐jamming channel access with partially overlapping channels (POC). Compared with traditional anti‐jamming systems that use non‐overlapping channels, POC improve the spectral efficiency.
Yunpeng Zhang, Luliang Jia, Nan Qi, Yifan Xu, Xueqiang Chen   +4 more
doaj   +1 more source

Mechanisms of parasite‐mediated disruption of brain vessels

FEBS Letters, EarlyView.
Parasites can affect the blood vessels of the brain, often causing serious neurological problems. This review explains how different parasites interact with and disrupt these vessels, what this means for brain health, and why these processes matter. Understanding these mechanisms may help us develop better ways to prevent or treat brain infections in ...
Leonor Loira, Sílvia Arroz‐Madeira, Cláudio A. Franco, Sara Silva Pereira   +3 more
wiley   +1 more source

Sex Hormones Associate With Amyotrophic Lateral Sclerosis Risk and Survival

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Amyotrophic lateral sclerosis (ALS) risk differs by sex and age, implicating sex hormones as potential modifiers. This study examined plasma levels of biologically active sex hormones and their association with ALS odds and survival in cases (females n = 131, males n = 189) and controls (females n = 138, males n = 150) from the University of ...
Stephen A. Goutman, David G. Stouffer, Dae‐Gyu Jang, Jihyun Park, Benjamin J. Murdock, Richard J. Auchus   +5 more
wiley   +1 more source

Study on the Jamming-Position Maneuver Algorithm of Off-Board Active Electronic Countermeasure Unmanned Surface Vehicles

IEEE Access, 2021
The existing off-board active decoys face such common technical problems as short action time, limited jamming power, and difficult control over deployment situation and effective directive jamming beam direction. For this reason, this paper introduces a
Yasong Luo, Chengxu Feng, Qingtao Xia, Xiaoling Ning   +3 more
doaj   +1 more source