Results 81 to 90 of about 7,278,007 (216)

Delayed Frame Repetition for Free Space Optical communication (FSO) Channel

open access: yes, 2017
Free space optical communication is gaining interest because of its various advantages like high data rate, high power efficiency, no license regulation etc. However, one has to overcome the challenge of distortion and fading caused by atmospheric turbulences and bad weather conditions. Free space optical communication channel is a time variant channel.
Shrestha, Amita   +2 more
openaire   +2 more sources

Lambertian source modelling of free space optical ground-to-train communications [PDF]

open access: yes, 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

A Tutorial on Quantum Key Distribution Protocols With Interactive Simulation of QBER and SKR Performance Metrics

open access: yesIET Quantum Communication, Volume 7, Issue 1, January/December 2026.
In this tutorial paper, we present a theoretical simulation‐based review of several QKD protocols, such as BB84, Decoy State BB84, Coherent One Way, Differential Phase Shift, and the entanglement‐based BBM92 and E91 protocols. We simulate the Quantum Bit Error Rate and Secret Key Rate of these QKD protocols.
Ushnik Nath   +3 more
wiley   +1 more source

Subcarrier intensity modulated free-space optical communication systems [PDF]

open access: yes
This thesis investigates and analyses the performance of terrestrial free-space optical communication (FSO) system based on the phase shift keying pre-modulated subcarrier intensity modulation (SIM).
Popoola, Wasiu Oyewole
core  

Bit error rate measurement of free space optical communication links under laboratory controlled conditions [PDF]

open access: yes, 2011
This paper outlines the experimental investigation of the fog effect on the bit error rate (BER) performance of the free space optical (FSO) communication link under a controlled laboratory environment.
Ghassemlooy, Zabih   +5 more
core  

MODELO PARA UNA RED HIBRIDA ÓPTICA INALÁMBRICA

open access: yesRedes de Ingeniería, 2012
Este artículo propone un modelo de red hibrida óptica - inalámbrica mediante la tecnología free space optics (FSO) para el desarrollo de una red de acceso de nueva generación, que represente una solución a los proveedores para diferenciación de servicios,
Luis Alejandro Quiroz   +2 more
doaj  

Conception and development of an adaptive optics testbed for free-space optical communication [PDF]

open access: yes, 2009
Optical free space communications are an efficient approach to transmit high data-rates with small antennas and low power consumption over large distances. Possible scenarios are links between satellites, up- and down-links from and to ground stations as
Moll, Florian
core  

Roadmap to Free Space Optics

open access: yes, 2020
With the ever-increasing demand for data and radio frequency spectrum becoming congested, Free Space Optical (FSO) communication may find a niche for situations where fiber is too expensive or too difficult to install.
Ooi, Boon S.   +3 more
core   +1 more source

Investigation of turbulence effect on the free space optical link for ground-to-train communications [PDF]

open access: yes, 2011
There is a growing demand for high mobility and ultrafast internet/data services which drives the motivation for free space optical (FSO) communications for high speed trains.
Ghassemlooy, Zabih   +4 more
core  

Contrasting space-time schemes for MIMO FSO systems with non-coherent modulation [PDF]

open access: yes, 2012
International ...
Ghassemlooy, Zabih   +9 more
core   +1 more source

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