Results 21 to 30 of about 10,131,863 (310)
RESTORE: Low-Energy Drone-Assisted NLoS-FSO Emergency Communications
IEEE Access, 2022 Drones are becoming an alternative for the rapid but temporary deployment of data-communication infrastructure in disaster-struck areas. A drone may be equipped with communications equipment to provide network connectivity for stranded users and first ...
Paa Kwesi Esubonteng +1 more
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A Review of Semiconductor-Based Monolithic Optical Phased Array Architectures
IEEE Open Journal of the Solid-State Circuits Society, 2021 Semiconductor-based monolithic optical phased arrays (OPA) enable optical beam-steering for lidar and 3D imaging, free-space optical communications, projection and 3D holographical displays, and neural probes among many other possible applications.
Hossein Hashemi
doaj +1 more source
Performance optimization of free-space optical communication protocols based on results from FSO demonstrations [PDF]
, 2007 The mobile free-space optical channel mainly suffers from relatively long link outages, produced by short-term blockings of the line-of-sight (obstacles, clouds), pointing- and tracking-errors or deep signal-fades caused by index of refraction turbulence
Bernhard Epple, Epple, Bernhard
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Multiple Wavelength Free-Space Laser Communications [PDF]
, 2003 Free-space optical communications systems in the atmosphere, based on intensity modulation and direct detection, are heavily affected by fading caused by turbulence cells of varying scale and motion.
Perlot, Nicolas +9 more
core +1 more source
Free-Space Optical MISO Communications With an Array of Detectors
IEEE Open Journal of the Communications Society, 2020 Multiple-input multiple-output (MIMO) and multiple-input single-output (MISO) schemes have yielded promising results in free space optical (FSO) communications by providing diversity against fading of the received signal intensity.
Muhammad Salman Bashir +1 more
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The effect of atmospheric turbulence on the performance of the free space optical communications [PDF]
, 2008 In free space optical (FSO) communication links, atmospheric turbulence has a significant impact on the quality of a laser beam propagating through the atmosphere.
Ghassemlooy, Zabih +7 more
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Physical-Layer Security in Free-Space Optical Communications
IEEE Photonics Journal, 2015 The communication between two legitimate peers in the presence of an external eavesdropper is studied from a physical-layer security perspective in the context of free-space optical (FSO) communications.
F. Javier Lopez-Martinez +2 more
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Sensors, 2023 Free-space optical (FSO) communication has been studied for next-generation network systems. Because an FSO system establishes point-to-point communication links, maintaining alignment among the transceivers is a critical challenge.
Hye-Min Park +2 more
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Lambertian source modelling of free space optical ground-to-train communications [PDF]
, 2012 There is a increasing demand for high speed data services while travelling on trains and other means of public transportation. Hence, an alternative technology to radio frequency (RF) communications called free space optics (FSO) could be used to provide
Ghassemlooy, Zabih +9 more
core +1 more source
Influence of Atmospheric Turbulence on Coherent Free-Space Optical Communications
, 2023 The development of coherent free-space optical communications systems could provide an opportunity for significantly increased data rates compared to the traditional intensity-modulation-based communications.
Gladysz, Szymon +2 more
core +1 more source