Results 1 to 10 of about 24,923 (111)

Research on Adaptive Transmit Diversity Strategy for Reducing Interference in Underwater Optical Multi-Beam Non-Orthogonal Multiple Access Systems

open access: yesPhotonics, 2023
With the rapid development of the underwater Internet of Things (IoT), the number of underwater communication nodes is rapidly increasing. The access capacity of a traditional multi-antenna communication system is limited by the number of transmitting ...
Yanlong Li   +5 more
doaj   +3 more sources

Beam interference suppression in multi-cell millimeter wave communications

open access: yesDigital Communications and Networks, 2019
Due to the increase in the number of users, beam switching is used for suppressing interference, which leads to higher computational complexity in multi-cell millimeter wave communications.
Zufan Zhang, Honghui Yu
doaj   +3 more sources

Dispersion Compensation and Multi-Beam Interference Correction Algorithm for Thickness Measurement of SiC Epitaxial Layer [PDF]

open access: yesSensors
To address the main challenges in thickness estimation of SiC epitaxial layers from infrared reflectance spectra, including refractive index dispersion, multi-beam interference, and spectral uncertainty, this study develops a physics-constrained ...
Lu Liu   +3 more
doaj   +2 more sources

A Beam Search-Based Channel Allocation Method for Interference Mitigation of NGSO Satellites with Multi-Beam Antennas

open access: yesAerospace, 2022
In the past few years, non-geostationary orbit (NGSO) satellite communication constellations have regained popularity due to their conspicuous advantages.
Haojie Zhang, Di Ren, Fanghua Jiang
doaj   +3 more sources

Multi-Beam Interference Advances and Applications: Nano-Electronics, Photonic Crystals, Metamaterials, Subwavelength Structures, Optical Trapping, and Biomedical Structures

open access: yesMicromachines, 2011
Research in recent years has greatly advanced the understanding and capabilities of multi-beam interference (MBI). With this technology it is now possible to generate a wide range of one-, two-, and three-dimensional periodic optical-intensity ...
Thomas K. Gaylord, Guy M. Burrow
doaj   +3 more sources

Nonlinear Frequency Offset Beam Design for FDA-MIMO Radar

open access: yesSensors, 2023
The beam pattern of frequency diversity array (FDA) radar has a range–angle two-dimensional degree of freedom, which makes it possible to distinguish different targets from the same angle and brings a new approach to anti-jamming of radars.
Yanjie Xu   +3 more
doaj   +1 more source

A solution for 5G indoor and outdoor co-frequency network interference

open access: yesDianxin kexue, 2022
5G indoor and outdoor deployment with the same frequency will lead to the decline of network coverage performance and user service experience.The causes of indoor and outdoor interference with the same frequency was systematically analyzed.The principle ...
Xirui GUO   +4 more
doaj   +2 more sources

Design and simulation of carrier-borne fighter multi-sensor co-detection model [PDF]

open access: yesZhihui kongzhi yu fangzhen, 2023
In order to improve the operational effectiveness of multi-sensor cooperative detection of carrier-borne fighter, based on the scene of air interception, according to the combat airspace from far to near, the scene model of the extended range search of ...
LI Taotao, GAO Weiliang, WANG Yongkun, SHEN Junbao, CHENG Huan
doaj   +1 more source

High-resolution multi-beam tracking with low overhead for mmWave beamforming system

open access: yesICT Express, 2021
In millimeter wave communication, the beamforming technique with accurate angle information plays a key role to overcome the high path-loss and mitigate the interference.
Seonyong Kim, Girim Kwon, Hyuncheol Park
doaj   +1 more source

Multi-satellite cooperative beam hopping resource allocation based on interference perception

open access: yesDianxin kexue, 2023
Beam hopping (BH) technology is one of effective ways to solve limitation of beam resources and enhance the system coverage ability of low earth orbit (LEO) satellite systems.Existing research typically considers beam hopping resource allocation for a ...
Jinlong HU   +6 more
doaj   +2 more sources

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