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dc.contributor.advisorMoazzami, Farzad
dc.contributor.advisorDean, Richard
dc.contributor.authorZegeye, Wondimu K.
dc.contributor.authorAlam, Tasmeer
dc.date.accessioned2019-11-12T18:59:13Z
dc.date.available2019-11-12T18:59:13Z
dc.date.issued2019-10
dc.identifier.issn0884-5123
dc.identifier.issn0074-9079
dc.identifier.urihttp://hdl.handle.net/10150/635260
dc.description.abstractPrevious work modeled the cruise phase of an aeronautical channel and showed how the channel varied as a function of height, distance, and speed. What was apparent from that analysis was that the ``cruise" channel was remarkable stable and varied slowly and predictably over time. The steady state channel reflected a 2-ray multipath model which exhibits deep nulls in the spectrum which affects serial tone modems significantly. Further the application of parallel tone modulation improves performance except for that portion of the band which was degraded by the null. This points to the use of Adaptive OFDM (AOFDM) structure wherein tones are only sent in portions of the band which are strong and not areas where the signal is weak. This work develops a method for capturing a profile of the Signal to Distortion Ratio (SDR) for each tone for each frame and over time. It also develops a method for converting the SDR per tone to estimate the optimum QAM modulation scheme for each tone for application in Link Dependent Adaptive Radio (LDAR).
dc.description.sponsorshipInternational Foundation for Telemetering
dc.language.isoen_US
dc.publisherInternational Foundation for Telemetering
dc.relation.urlhttp://www.telemetry.org/
dc.rightsCopyright © held by the author; distribution rights International Foundation for Telemetering
dc.subjectOFDM
dc.subjectAdaptive OFDM
dc.subjectLink Dependent Adaptive Radio (LDAR)
dc.subjectSignal-to-Distortion Ratio (SDR) OFDM (AOFDM)
dc.titleAdaptive OFDM for Aeronautical Channels
dc.typetext
dc.typeProceedings
dc.contributor.departmentMorgan State University, Dept Electrical and Computer Engineering
dc.identifier.journalInternational Telemetering Conference Proceedings
dc.description.collectioninformationProceedings from the International Telemetering Conference are made available by the International Foundation for Telemetering and the University of Arizona Libraries. Visit http://www.telemetry.org/index.php/contact-us if you have questions about items in this collection.
refterms.dateFOA2019-11-12T18:59:13Z


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