Mostra el registre d'ítem simple

dc.contributor.authorBelmonte Molina, Aniceto
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.date.accessioned2014-12-10T17:10:21Z
dc.date.created2014-06-01
dc.date.issued2014-06-01
dc.identifier.citationBelmonte, A. Capacity of coherent laser downlinks. "Journal of lightwave technology", 01 Juny 2014, vol. 32, núm. 11, p. 2128-2132.
dc.identifier.issn0733-8724
dc.identifier.urihttp://hdl.handle.net/2117/24990
dc.description.abstractAccurate knowledge of information data capacity between a spacecraft and optical ground stations is of utmost importance for assessing the feasibility of laser downlinks in future high bandwidth communication systems from space. For the additional cost and complexity of the downlink systems, there is a growing interest for the sensitivity and spectral efficiency potential of coherent optical receivers. But in practice, as the link includes part of the atmosphere, the potential of coherent receivers is seriously affected by phase distortions and fading to the link induced by clear-air turbulence. Conveniently, coherent channel-matched array receivers consisting of multiple subapertures can reduce signal fading. Also, wavefront distortions can be mitigated in principle with adaptive optics. Here we provide a comprehensive, unified analysis of these two fundamental techniques used in atmospheric downlink coherent system. Our results demonstrate how array technologies, as an alternative to adaptive optics, are expected to expand capacity of laser downlinks by tracking and correcting atmospherically distorted signals.
dc.format.extent5 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica
dc.subject.lcshOptics, Adaptive
dc.subject.lcshOptical communications
dc.subject.otherAdaptive optics
dc.subject.otherChannel-matched receivers
dc.subject.otherFree-space coherent optical communications
dc.subject.otherSatellite downlinks
dc.subject.otherSpace optical-systems
dc.subject.otherAtmospheric-turbulence
dc.subject.otherPerformance analysis
dc.subject.otherEqual-gain
dc.subject.otherReceivers
dc.subject.otherDiversity
dc.subject.otherCommunication
dc.subject.otherChannels
dc.subject.otherArrays
dc.titleCapacity of coherent laser downlinks
dc.typeArticle
dc.subject.lemacComunicacions òptiques
dc.subject.lemacSistemes òptics
dc.contributor.groupUniversitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció
dc.identifier.doi10.1109/JLT.2014.2321186
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=6808415&url=http%3A%2F%2Fieeexplore.ieee.org%2Fstamp%2Fstamp.jsp%3Ftp%3D%26arnumber%3D6808415
dc.rights.accessRestricted access - publisher's policy
local.identifier.drac14914351
dc.description.versionPostprint (published version)
dc.date.lift10000-01-01
local.citation.authorBelmonte, A.
local.citation.publicationNameJournal of lightwave technology
local.citation.volume32
local.citation.number11
local.citation.startingPage2128
local.citation.endingPage2132


Fitxers d'aquest items

Imatge en miniatura

Aquest ítem apareix a les col·leccions següents

Mostra el registre d'ítem simple