Results 51 to 60 of about 246,737 (191)
A key technology for standardizing outdoor optical wireless communications
ICT Express, 2017 In this paper, we introduce a key technology, polarization modulation (PM), which should be taken into account when standardizing outdoor optical wireless communications (OWC), also known as free-space optical communications (FSO).
Yuwei Su, Takuro Sato
doaj +1 more source
Performance of BPSK subcarrier intensity modulation free-space optical communications using a log-normal atmospheric turbulence model [PDF]
, 2010 In this paper, we present simulation results for the bit error rate (BER) performance and the fading penalty of a BPSK - subcarrier intensity modulation (BPSK-SIM) free-space optical (FSO) communication link in a log-normal atmospheric turbulence model ...
Ghassemlooy, Zabih +6 more
core +2 more sources
High speed short range optical wireless ground-to-train communications [PDF]
, 2010 There is a huge demand for seamless high-speed communications in fast moving trains. People want broadband services while on board as in their home or in the workplace.
Ghassemlooy, Zabih +3 more
core
Free space laser telecommunication through fog
, 2018 Atmospheric clearness is a key issue for free space optical communications (FSO). We present the first active method to achieve FSO through clouds and fog, using ultrashort high intensity laser filaments.
Kasparian, Jérôme +4 more
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All-optical retro-modulation for free-space optical communication
Optics Express, 2018 This work presents device and system architectures for free-space optical and optical wireless communication at high data rates over multidirectional links. This is particularly important for all-optical networks, with high data rates, low latencies, and network protocol transparency, and for asymmetrical networks, with multidirectional links from one ...
Brandon, Born +3 more
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A 20-m/40-Gb/s 1550-nm DFB LD-Based FSO Link
IEEE Photonics Journal, 2015 An innovative free-space optical (FSO) link using laser light propagation to achieve transmission rate of 40 Gb/s at a wavelength of 1550 nm is proposed and experimentally demonstrated.
Wen-Shing Tsai +6 more
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Performance of free space optical communication using M-array receivers at atmospheric conditions [PDF]
, 2009 : In free space optical (FSO) communication links, atmospheric parameters including absorption, scattering and turbulence have significant impacts on the quality of laser beams propagating through the atmosphere.
Ahmadi, Vahid +2 more
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Laser guide stars for optical free-space communications [PDF]
SPIE Proceedings, 2017 The German Aerospace Center (DLR) and the European Southern Observatory (ESO) performed a measurement campaign together in April and July 2016 at Teide-Observatory (Tenerife), with the support of the European Space Agency (ESA), to investigate the use of laser guide stars (LGS) in ground to space optical communications.
Mata Calvo, Ramon +7 more
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Frontiers in PhysicsThe Japanese National Institute of Information and Communications Technology (NICT) plans to launch a 6U CubeSat into Low Earth Orbit (LEO) during the Japanese fiscal year 2025.
Alberto Carrasco-Casado +4 more
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Differential Signalling in Free-Space Optical Communication Systems [PDF]
Applied Sciences, 2018 In this paper, we review the differential signalling techniques and investigate its implementation of in free-space optical (FSO) communication systems. The paper is an extended version of our previous works, where the effects of background noise, weak turbulence and pointing errors (PE) were investigated separately.
Mansour Abadi, Mojtaba +7 more
openaire +3 more sources