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dc.contributor.advisorAktaş, Defne
dc.contributor.authorÜzeler, Hande
dc.date.accessioned2016-01-08T18:12:12Z
dc.date.available2016-01-08T18:12:12Z
dc.date.issued2010
dc.identifier.urihttp://hdl.handle.net/11693/15017
dc.descriptionAnkara : The Department of Electrical and Electronics Engineering and the Institute of Engineering and Science of Bilkent University, 2010.en_US
dc.descriptionThesis (Master's) -- Bilkent University, 2010.en_US
dc.descriptionIncludes bibliographical references leaves 76-80.en_US
dc.description.abstractThe main goal of the next generation wireless communication systems is to provide high data rate services. In order to deal with performance-limiting challenges that include frequency selective fading channels, power and bandwidth constraints, multiple input multiple output (MIMO) and orthogonal frequency division multiplexing (OFDM) techniques have been proposed as effective techniques to combat fading and to provide high rate reliable transmission. In this thesis we first give an overview of WiMAX as an example of an OFDM system and study the performance of the WiMAX physical layer under different MIMO techniques. We also analyze space-frequency coding and propose a threaded algebraic space-time (TAST) based code. Secondly, since the mobile bandwidth is an expensive and scarce resource, it seems likely that a high frequency reuse will be employed in the future cellular networks to increase spectral efficiency. This means that base stations (BSs) will operate in the same frequency band and therefore cause cochannel interference (CCI) to the users at other cells. CCI is an important performance degrading factor. Therefore our second aim is to investigate BS cooperation techniques to mitigate CCI. We assume that channel state information (CSI) is available at the cooperating BSs and analyze the performance gains due to cooperation when used in conjunction with Alamouti space-time coding.en_US
dc.description.statementofresponsibilityÜzeler, Handeen_US
dc.format.extentxi, 80 leaves, tablesen_US
dc.language.isoEnglishen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectMultiple Input Multiple Output (MIMO)en_US
dc.subjectDistributed Space-Time Codingen_US
dc.subjectBase Station Cooperationen_US
dc.subjectSpace-Frequency Codingen_US
dc.subjectSpace-Time Codingen_US
dc.subjectOrthogonal Frequency Division Multiplexing (OFDM)en_US
dc.subject.lccTK5103.484 .U94 2010en_US
dc.subject.lcshOrthogonal frequency division multiplexing.en_US
dc.subject.lcshMIMO systems.en_US
dc.subject.lcshSpace time codes.en_US
dc.subject.lcshWireless communication systems.en_US
dc.titlePerformance analysis of diversity techniques for OFDM and base station cooperationen_US
dc.typeThesisen_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.publisherBilkent Universityen_US
dc.description.degreeM.S.en_US


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