Spectrum-Aware Orthogonal Frequency Division Multiplexing

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dc.contributor.authorRecio, Adolfo Leonen
dc.contributor.committeechairAthanas, Peter M.en
dc.contributor.committeememberde Sturler, Ericen
dc.contributor.committeememberBuehrer, R. Michaelen
dc.contributor.committeememberMartin, Thomas L.en
dc.contributor.committeememberPatterson, Cameron D.en
dc.contributor.departmentElectrical and Computer Engineeringen
dc.date.accessioned2014-03-14T20:20:59Zen
dc.date.adate2010-12-30en
dc.date.available2014-03-14T20:20:59Zen
dc.date.issued2010-12-15en
dc.date.rdate2010-12-30en
dc.date.sdate2010-12-20en
dc.description.abstractReconfigurable computing architectures are well suited for the dynamic data flow processing requirements of software-defined radio. The software radio concept has quickly evolved to include spectrum sensing, awareness, and cognitive algorithms for machine learning resulting in the cognitive radio model. This work explores the application of reconfigurable hardware to the physical layer of cognitive radios using non-contiguous multi-carrier radio techniques. The practical tasks of spectrum sensing, frame detection, synchronization, channel estimation, and mutual interference mitigation are challenges in the communications and the computing fields that are addressed to optimally utilize the capacity of opportunistically allocated spectrum bands. FPGA implementations of parameterizable OFDM and filter bank multi-carrier (FBMC) radio prototypes with spectrum awareness and non-contiguous sub-carrier allocation were completed and tested over-the-air. Sub-carrier sparseness assumptions were validated under practical implementation and performance considerations. A novel algorithm for frame detection and synchronization with mutual interference rejection applicable to the FBMC case was proposed and tested.en
dc.description.degreePh. D.en
dc.identifier.otheretd-12202010-142616en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-12202010-142616/en
dc.identifier.urihttp://hdl.handle.net/10919/30193en
dc.publisherVirginia Techen
dc.relation.haspartRecio_AL_D_2010.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectOverlay Systemsen
dc.subjectCognitive radio networksen
dc.subjectSpectrum Awarenessen
dc.subjectFilter Bank Multi-carrieren
dc.subjectOFDMen
dc.subjectDynamic Spectrum Accessen
dc.subjectConfigurable Computingen
dc.titleSpectrum-Aware Orthogonal Frequency Division Multiplexingen
dc.typeDissertationen
thesis.degree.disciplineElectrical and Computer Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

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