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dc.contributor.authorChaaban, Anas
dc.contributor.authorRezki, Zouheir
dc.contributor.authorAlouini, Mohamed-Slim
dc.date.accessioned2018-09-03T13:22:00Z
dc.date.available2018-09-03T13:22:00Z
dc.date.issued2018-05-29
dc.identifier.citationChaaban A, Rezki Z, Alouini M-S (2018) Low-SNR Asymptotic Capacity of MIMO Optical Intensity Channels with Peak and Average Constraints. IEEE Transactions on Communications: 1–1. Available: http://dx.doi.org/10.1109/tcomm.2018.2841903.
dc.identifier.issn0090-6778
dc.identifier.doi10.1109/tcomm.2018.2841903
dc.identifier.urihttp://hdl.handle.net/10754/628414
dc.description.abstractThe low-SNR asymptotic capacity of the multipleinput multiple-output (MIMO) optical intensity channel is studied under both average and peak intensity constraints. We focus on low SNR, which can be modeled as the scenario where both constraints proportionally vanish, or where the peak constraint is held constant while the average constraint vanishes. A capacity upper bound is derived, and is shown to be tight at low SNR under both scenarios. The capacity achieving input distribution at low SNR is shown to be a maximally-correlated vectorbinary input distribution. Consequently, the low-SNR capacity of the channel is characterized. As a byproduct, it is shown that for a channel with peak intensity constraints only, or with peak intensity constraints and individual (per aperture) average intensity constraints, a simple scheme composed of coded onoff keying, spatial repetition, and maximum-ratio combining is optimal at low SNR.
dc.description.sponsorshipHis work was supported by the Natural Sciences and Engineering Research Council of Canada (NSERC). His work is supported in part by the Qatar National Research Fund (a member of Qatar Foundation) under Grant NPRP 9-077-2-036. The statements made herein are solely the responsibility of the authors.
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.relation.urlhttps://ieeexplore.ieee.org/document/8368262/
dc.rights(c) 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
dc.subjectApertures
dc.subjectChannel capacity
dc.subjectGaussian noise
dc.subjectIntensity modulation
dc.subjectlow-SNR capacity
dc.subjectmaximally-correlated binary
dc.subjectMIMO
dc.subjectMIMO communication
dc.subjectMRC
dc.subjectOOK
dc.subjectOptical transmitters
dc.subjectReceivers
dc.subjectrepetition
dc.subjectSignal to noise ratio
dc.titleLow-SNR Asymptotic Capacity of MIMO Optical Intensity Channels with Peak and Average Constraints
dc.typeArticle
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.contributor.departmentElectrical Engineering Program
dc.identifier.journalIEEE Transactions on Communications
dc.eprint.versionPost-print
dc.contributor.institutionSchool of Engineering, University of British Columbia, Kelowna, BC Canada V1V 1V7.
dc.contributor.institutionElectrical and Computer Engineering Department, University of Idaho, Moscow, ID 83844 USA.
kaust.personAlouini, Mohamed-Slim
refterms.dateFOA2018-09-10T08:14:26Z
dc.date.published-online2018-05-29
dc.date.published-print2018


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