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dc.contributor.authorClarke, Jordanen
dc.date.accessioned2019-09-04T23:32:44Z
dc.date.available2019-09-04T23:32:44Z
dc.identifier.urihttp://hdl.handle.net/1974/26522
dc.description.abstractEfficient resource allocation at the physical layer of wireless communication systems is closely linked to performance. Time and space are examples of such resources. In a densely-deployed multi-antenna, multi-user wireless downlink, finding a low-interference group of spatially distributed users in conjunction with spatial-domain multiple access beamforming represent techniques for efficient use of spatial resources. However, in practice, finding a perfectly orthogonal interference-free group of users to receive concurrent service is unlikely, thus wasting the transmission period or temporal resource. In this work, we set out to analyze the allocation of competing spatial and temporal resources in the context of the wireless downlink. The intention of this analysis is to investigate the orthogonality criteria that underpin many practical user selection algorithms. Deeper understanding of such criteria has potential for designing improved interference-mitigating algorithms in this sense, and in other related scenarios. A relaxed definition of orthogonality between users in group is investigated for practical amplitude and quadrature modulation schemes. Motivated by widely-linear processing techniques, new relaxed user orthogonality on the complex hyper-sphere illustrates temporal benefits and trade-offs associated with various system parameters. Beamforming and user selection are analyzed jointly for key scenarios of interest to gain insights into the interaction between these spatial resource management techniques. System throughput and reliability performance analysis is also developed, and applied to these scenarios to gain further insights.en
dc.language.isoengen
dc.relation.ispartofseriesCanadian thesesen
dc.rightsQueen's University's Thesis/Dissertation Non-Exclusive License for Deposit to QSpace and Library and Archives Canadaen
dc.rightsProQuest PhD and Master's Theses International Dissemination Agreementen
dc.rightsIntellectual Property Guidelines at Queen's Universityen
dc.rightsCopying and Preserving Your Thesisen
dc.rightsThis publication is made available by the authority of the copyright owner solely for the purpose of private study and research and may not be copied or reproduced except as permitted by the copyright laws without written authority from the copyright owner.en
dc.subjectInterferenceen
dc.subjectWirelessen
dc.subjectRelaxed orthogonalityen
dc.subjectBeta distributionen
dc.subjectMIMOen
dc.titleAnalysis of Relaxed User Orthogonality for Wireless Multi-user MIMO Downlink Transmissionen
dc.typethesisen
dc.description.degreeM.A.Sc.en
dc.contributor.supervisorBlostein, Stevenen
dc.contributor.departmentElectrical and Computer Engineeringen
dc.embargo.termsPublication of the work contained in this thesis is currently being pursued in other venues. In order to protect the intellectual property of the author prior to the conclusion of these publications, restriction of the thesis release is requested.en
dc.embargo.liftdate2024-09-02T21:12:21Z
dc.degree.grantorQueen's University at Kingstonen


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