HARQ Performance Limits for Free-Space Optical Communication Systems [PDF]
EntropyFree-space optical (FSO) communications represent an attractive technology for future high-capacity wireless and satellite networks, offering multi-Gbps data rates, unlicensed spectrum, and built-in physical-layer security.
Giorgio Taricco
doaj +2 more sources
Compensation-free high-dimensional free-space optical communication using turbulence-resilient vector beams [PDF]
Nature Communications, 2021 Resistance to turbulence is an ongoing challenge for point-to-point freespace communications. Here the authors present a protocol for encoding a large amount of information in vector beams that are transmittable through a moderately strong turbulent ...
Ziyi Zhu +9 more
doaj +2 more sources
Beyond Fiber: Toward Terahertz Bandwidth in Free-Space Optical Communication [PDF]
SensorsThe rapid advancement of terahertz (THz) communication systems has positioned this technology as a key enabler for next-generation telecommunication networks, including 6G, secure communications, and hybrid wireless-optical systems.
Rahat Ullah +8 more
doaj +2 more sources
High-performance 100 Gbps free-space optical communication via optical pin beam receiver [PDF]
Communications EngineeringFree-space optical communication with high transmission bandwidth and small antenna size has been progressively deployed for ground-air-space communications in recent years.
Meiling Guan +15 more
doaj +2 more sources
Robust Free-Space Optical Communication Utilizing Polarization for the Advancement of Quantum Communication [PDF]
EntropyFree-space optical (FSO) communication can be subject to various types of distortion and loss as the signal propagates through non-uniform media. In experiment and simulation, we demonstrate that the state of polarization and degree of polarization of ...
Nicholas Savino +5 more
doaj +2 more sources
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
core +1 more source
Using a GPS-Aided Inertial System for Coarse-Pointing of Free-Space Optical Communication Terminals [PDF]
, 2006 In the Capanina project, it has been shown that it is possible to use solely GPS positions for coarse-pointing of a stratospheric free-space optical communication terminal.
Bernhard Epple, Epple, Bernhard
core +1 more source
Broadband Backhaul Communication for Stratospheric Platforms: The Stratospheric Optical Payload Experiment (STROPEX) [PDF]
, 2006 A high bitrate optical downlink was performed by the stratospheric optical payload experiment (STROPEX), a part of the EU CAPANINA project. The STROPEX objectives were to design and build the necessary hardware to demonstrate an optical backhaul downlink
Knapek, Markus +9 more
core +1 more source
Free-Space Communication Turbulence Compensation by Optical Phase Conjugation
IEEE Photonics Journal, 2020 A new scheme is proposed to mitigate the atmospheric turbulence effect in coherent free-space optical (FSO) communications by employing optical phase conjugation (OPC) to compensate the signal distortion.
Junfan Chen +7 more
doaj +1 more source
MIMO free-space optical communication employing subcarrier intensity modulation in atmospheric turbulence channels [PDF]
, 2009 In this paper, we analyse the error performance of transmitter/receiver array free-space optical (FSO) communication system employing binary phase shift keying (BPSK) subcarrier intensity modulation (SIM) in clear but turbulent atmospheric channel ...
Ghassemlooy, Zabih +7 more
core +1 more source