Results 1 to 10 of about 35,297 (217)

Bootstrapping free-space optical networks [PDF]

open access: yesIEEE Journal on Selected Areas in Communications, 2005
We introduce a challenging problem in establishing and initially configuring a free space optical (FSO) network. In such networks, it is assumed that each communication node is a base station, including a router and optical transceivers, and its number of transceivers is limited.
Fang Liu, Uzi Vishkin, Stuart D. Milner
openaire   +1 more source

The free space optical interference channel [PDF]

open access: yes2011 IEEE International Symposium on Information Theory Proceedings, 2011
5 pages, 3 figures, Accepted for ISIT 2011, Saint-Petersburg, Russia, v2 has minor ...
Saikat Guha 0001   +2 more
openaire   +2 more sources

A survey of free space optical networks

open access: yesDigital Communications and Networks, 2017
Free Space Optical (FSO) networks, also known as optical wireless networks, have emerged as viable candidates for broadband wireless communications in the near future. The range of the potential application of FSO networks is extensive, from home to satellite.
In Keun Son, Shiwen Mao
openaire   +2 more sources

Terrestrial Free-Space Optical Communications [PDF]

open access: yes, 2010
Book abstract: Mobile and wireless communications applications have a clear impact on improving the humanity wellbeing. From cell phones to wireless internet to home and office devices, most of the applications are converted from wired into wireless communication.
Ghassemlooy, Zabih, Popoola, Wasiu O.
openaire   +2 more sources

Relay-assisted free-space optical communication [PDF]

open access: yesIEEE Transactions on Wireless Communications, 2007
In this paper, we present relay-assisted transmission as a powerful fading mitigation tool for free-space optical systems operating in atmospheric turbulence channels. We study both serial (i.e., multi-hop transmission) and parallel (i.e., cooperative diversity) relaying encoupled with amplify-and-forward and decode-and-forward modes.
Majid Safari, Murat Uysal
openaire   +1 more source

On the Capacity of Free-Space Optical Intensity Channels [PDF]

open access: yesIEEE Transactions on Information Theory, 2008
New upper and lower bounds are presented on the capacity of the free-space optical intensity channel. This channel is characterized by inputs that are nonnegative (representing the transmitted optical intensity) and by outputs that are corrupted by additive white Gaussian noise (because in free space the disturbances arise from many independent sources)
Amos Lapidoth   +2 more
openaire   +4 more sources

Review on Free Space Optics [PDF]

open access: yesINTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY, 2013
Present era demands high bandwidth with high data rates especially for internet. For high data rates requires high speed transmission medium like optical fiber. To overcome the bottle neck of last mile communication free space optics has emerged as a better option for radio engineers.
Er. Rajeev Thakur   +2 more
openaire   +1 more source

An optically powered, free space optical communications receiver

open access: yes2008 IEEE International Symposium on Circuits and Systems (ISCAS), 2008
Two of the key components of sensor motes are a power source and a communications receiver. One approach to creating very small motes is to use free space optical communication and to scavenge power from the optical downlink. In this paper photodiodes are described that were made on a standard CMOS process and generate electrical power from the ...
Liu, J   +4 more
openaire   +2 more sources

Diffractive optical computing in free space

open access: yesNature Communications
AbstractStructured optical materials create new computing paradigms using photons, with transformative impact on various fields, including machine learning, computer vision, imaging, telecommunications, and sensing. This Perspective sheds light on the potential of free-space optical systems based on engineered surfaces for advancing optical computing ...
Jingtian Hu   +5 more
openaire   +3 more sources

Free Space Optical Technologies [PDF]

open access: yes, 2010
Free Space Optics (FSO), also known as Optical Wireless or Lasercom (i.e. Laser Communications), is a re-emerging technology using modulated optical beams to establish short, medium or long reach wireless data transmission. Most of the attention on FSO communication systems it was initially boost by military purposes and first development of this ...
Davide M.   +8 more
openaire   +1 more source

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