Results 21 to 30 of about 160,472 (263)

IRS-Assisted Secure UAV Transmission via Joint Trajectory and Beamforming Design

open access: yesIEEE Transactions on Communications, 2022
Despite the wide utilization of unmanned aerial vehicles (UAVs), UAV communications are susceptible to eavesdropping due to air-ground line-of-sight channels.
Xiaowei Pang   +5 more
semanticscholar   +1 more source

RIS-Assisted Communication Radar Coexistence: Joint Beamforming Design and Analysis [PDF]

open access: yesIEEE Journal on Selected Areas in Communications, 2022
Integrated sensing and communication (ISAC) has been regarded as one of the most promising technologies for future wireless communications. However, the mutual interference in the communication radar coexistence system cannot be ignored.
Yinghui He   +3 more
semanticscholar   +1 more source

Distributed beamforming with one‐bit feedback and clustering for multi‐node wireless energy transfer

open access: yesETRI Journal, 2021
To resolve energy depletion issues in massive Internet of Things sensor networks, we developed a set of distributed energy beamforming methods with one‐bit feedback and clustering for multi‐node wireless energy transfer, where multiple single‐antenna ...
Jonghyeok Lee   +4 more
doaj   +1 more source

Joint Beamforming Design for RIS-Assisted Integrated Sensing and Communication Systems [PDF]

open access: yesIEEE Transactions on Vehicular Technology, 2022
Integrated sensing and communication (ISAC) has been envisioned as a promising technology to tackle the spectrum congestion problem for future networks.
H. Luo   +4 more
semanticscholar   +1 more source

Evaluation of multi‐user multiple‐input multiple‐output digital beamforming algorithms in B5G/6G low Earth orbit satellite systems

open access: yesInternational Journal of Satellite Communications and Networking, EarlyView., 2023
In this paper, we investigate the application of signal‐to‐leakage‐plus‐noise ratio (SLNR) beamforming to low Earth orbit non‐terrestrial networks. The SLNR criterion aims at maximizing the received desired signal power for each user while minimizing the overall interference power caused by each user to all other co‐channel receivers. We show that such
M. Rabih Dakkak   +3 more
wiley   +1 more source

A Survey on Millimeter-Wave Beamforming Enabled UAV Communications and Networking [PDF]

open access: yesIEEE Communications Surveys and Tutorials, 2021
Unmanned aerial vehicles (UAVs) have found widespread commercial, civilian, and military applications. Wireless communication has always been one of the core technologies for UAV.
Zhenyu Xiao   +6 more
semanticscholar   +1 more source

Time and phase alignment of distributed gateways: Theoretical analysis and experimental demonstration

open access: yesInternational Journal of Satellite Communications and Networking, EarlyView., 2023
The performance limitation in multiple‐input multiple‐output (MIMO) feeder links due to time and phase misalignment of the ground stations is investigated. Time and phase distribution over optical fiber is considered as an approach to achieve the synchronization requirements.
Eriserdi Mollaymeri   +2 more
wiley   +1 more source

A Review of the State of the Art and Future Challenges of Deep Learning-Based Beamforming

open access: yesIEEE Access, 2022
The key objective of this paper is to explore the recent state-of-the-art artificial intelligence (AI) applications on the broad field of beamforming. Hence, a multitude of AI-oriented beamforming studies are thoroughly investigated in order to correctly
Haya Al Kassir   +5 more
doaj   +1 more source

Near-Surface Geological Structure Seismic Wave Imaging Using the Minimum Variance Spatial Smoothing Beamforming Method

open access: yesApplied Sciences, 2021
Erecting underground structures in regions with unidentified weak layers, cavities, and faults is highly dangerous and potentially disastrous.
Ming Peng   +6 more
doaj   +1 more source

Broadband Beamforming Using the Least Square Method Improved via Adaptive Diagonal Loading [PDF]

open access: yesJournal of Electromagnetic Engineering and Science, 2023
The least square method (LSM) is a commonly used beamforming method. However, it limits the beamforming frequency bandwidth and is vulnerable to noise; therefore, diagonal loading is used to overcome these limitations.
Euiho Shin   +4 more
doaj   +1 more source

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