Results 1 to 10 of about 883,994 (287)

Directional Modulation-Enhanced Multiple Antenna Arrays for Secure and Precise Wireless Transmission [PDF]

Sensors, 2019
Directional modulation (DM) technique has the ability to enhance the physical layer security (PLS) of wireless communications. Conventional DM schemes are usually based on a single antenna array with the basic assumption that eavesdroppers (Eves) and ...
Wei Zhang, Mingnan Le, Bin Li, Jun Wang, Jinye Peng   +4 more
doaj   +4 more sources

Two Low-Complexity Efficient Beamformers for an IRS- and UAV-Aided Directional Modulation Network

Drones, 2023
As excellent tools for aiding communication, an intelligent reflecting surface (IRS) and an unmanned aerial vehicle (UAV) can extend the coverage area, remove the blind area, and achieve a dramatic rate improvement.
Yeqing Lin, Feng Shu, Yuxiang Zheng, Jing Liu, Rongen Dong, Xun Chen, Yue Wu, Shihao Yan, Jiangzhou Wang   +8 more
doaj   +3 more sources

Spatial and Directional Modulation Systems for Near-Field Secure Transmission [PDF]

Sensors
The proliferation of massive antenna arrays and the consequent intensification of near-field effects with 6G necessitate addressing critical security challenges in near-field communication environments.
Ji Liu, Yuan Zhong, Yong Wang, Dong Gong, Yue Xiao   +4 more
doaj   +2 more sources

Directional Modulation of Exciton Emission Using Single Dielectric Nanospheres [PDF]

Advanced Materials, 2021
Brian Korgel, Alex Krasnok, Mingsong Wang   +2 more
exaly   +2 more sources

Covert Information Mapped Spatial and Directional Modulation toward Secure Wireless Transmission [PDF]

Sensors, 2021
Chen Hao, Jie Tian, Xianglu Li
exaly   +2 more sources

Ascophyllan Supplementation Is Safe and Associated with Exploratory Modulation of Innate Immune Phenotypes, Biochemical Parameters, and the Gut Microbiome in a Randomized Pilot Trial [PDF]

Marine Drugs
Background: Ascophyllan, a sulfated polysaccharide extracted from brown seaweed, has shown immunomodulatory and antioxidant effects in preclinical studies, yet human clinical evidence remains scarce.
Shohei Mizuno, Jorge Luis Espinoza, Lam Quang Vu, Hirona Banno, Yusuke Iida, Saki Shinohara, Do Tung Dac, Yuya Nakagami, Kaori Uchino, Tomohiro Horio, Ichiro Hanamura, Nobuhiro Asai, Megumi Enomoto, Hiroya Tani, Takayuki Nakayama, Susumu Suzuki, Akiyoshi Takami   +16 more
doaj   +2 more sources

Joint Beamforming and Phase Shift Design for Hybrid IRS and UAV-Aided Directional Modulation Networks

Drones, 2023
Recently, intelligent reflecting surfaces (IRSs) and unmanned aerial vehicles (UAVs) have been integrated into wireless communication systems to enhance the performance of air–ground transmission. To balance performance, cost, and power consumption well,
Rongen Dong, Hangjia He, Feng Shu, Qi Zhang, Riqing Chen, Shihao Yan, Jiangzhou Wang   +6 more
doaj   +1 more source

Metasurface Based Positional Modulation Design

IEEE Access, 2020
Directional modulation (DM) can transmit information to the desired direction or directions with known constellation mappings, but with scrambled ones in other directions.
Bo Zhang, Wei Liu, Qiang Li, Yang Li, Xiaonan Zhao, Cuiping Zhang, Cheng Wang   +6 more
doaj   +1 more source

Low-Complexity Joint Phase Adjustment and Receive Beamforming for Directional Modulation Networks via IRS

IEEE Open Journal of the Communications Society, 2022
Intelligent reflecting surface (IRS) is a revolutionary and low-cost technology for boosting the spectrum and energy efficiencies in future wireless communication network. In order to create controllable multipath transmission in the conventional line-of-
Rongen Dong, Shaohua Jiang, Xinhai Hua, Yin Teng, Feng Shu, Jiangzhou Wang   +5 more
doaj   +1 more source

Programming Wireless Security Through Learning‐Aided Spatiotemporal Digital Coding Metamaterial Antenna

Advanced Intelligent Systems, 2023
The advancement of future large‐scale wireless networks necessitates the development of cost‐effective and scalable security solutions. Specifically, physical layer (PHY) security has been put forth as a cost‐effective alternative to cryptographic ...
Alireza Nooraiepour, Shaghayegh Vosoughitabar, Chung-Tse Michael Wu, Waheed U. Bajwa, Narayan B. Mandayam   +4 more
doaj   +1 more source