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dc.contributor.advisorCanright, David R.
dc.contributor.advisorBuettner, Raymond R., Jr.
dc.contributor.authorKeeley, Paul C.
dc.date.accessioned2019-08-08T23:50:20Z
dc.date.available2019-08-08T23:50:20Z
dc.date.issued2019-06
dc.identifier.urihttp://hdl.handle.net/10945/62846
dc.descriptionApproved for public release. distribution is unlimiteden_US
dc.description.abstractAs a high bandwidth, narrow beamwidth channel, free space optical (FSO) communications can potentially achieve high data rates with a low probability of detection and intercept. However, in addition to the additive white Gaussian noise typical of radio frequency communications, atmospheric turbulence adds random, relatively long duration fades to the channel, which significantly decrease overall throughput. This thesis explores how various forward error correction (FEC) techniques affect the channel capacity of a multiple input/multiple output (MIMO) system. A statistical model of the channel is developed from the existing literature. Thirteen coding and modulation schemes are implemented in software and tested against this channel model under different simulated levels of noise and turbulence. Codes are compared by characteristics such as energy per bit and outage thresholds to determine which characteristics of the different codes most critically affect performance. Key performance indicators for each code include average bit error rate, overall throughput, and variability. A recommendation is made to implement variable-level coding in future advanced technology demonstrators or prototypes developed for the FSO MIMO system.en_US
dc.description.urihttp://archive.org/details/forwarderrorcorr1094562846
dc.publisherMonterey, CA; Naval Postgraduate Schoolen_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
dc.titleFORWARD ERROR CORRECTION ENCODING ON THE MULTIPLE INPUT/MULTIPLE OUTPUT FREE SPACE OPTICAL COMMUNICATIONS CHANNELen_US
dc.typeThesisen_US
dc.contributor.secondreaderAteshian, Peter R.
dc.contributor.departmentInformation Sciences (IS)
dc.contributor.departmentApplied Mathematics (MA)
dc.subject.authorfree space optical communicationsen_US
dc.subject.authorforward error correctionen_US
dc.subject.authorlow probability of intercepten_US
dc.subject.authorlow probability of detecten_US
dc.description.serviceMajor, United States Marine Corpsen_US
etd.thesisdegree.nameMaster of Science in Information Warfare Systems Engineeringen_US
etd.thesisdegree.nameMaster of Science in Applied Mathematicsen_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplineInformation Warfare Systems Engineeringen_US
etd.thesisdegree.disciplineApplied Mathematicsen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US
dc.identifier.thesisid32013


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