An adaptive multistage interference cancellation receiver for CDMA

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dc.contributor.authorKaul, Ashishen
dc.contributor.committeechairWoerner, Brian D.en
dc.contributor.committeememberRappaport, Theodore S.en
dc.contributor.committeememberReed, Jeffrey H.en
dc.contributor.departmentElectrical Engineeringen
dc.date.accessioned2014-03-14T21:29:24Zen
dc.date.adate2009-02-13en
dc.date.available2014-03-14T21:29:24Zen
dc.date.issued1995-03-23en
dc.date.rdate2009-02-13en
dc.date.sdate2009-02-13en
dc.description.abstractMost of the previous research on multistage interference cancellation receivers for Code Division Multiple Access (CDMA) systems has relied on the use of simulation techniques for performance evaluation. This thesis formulates a model for an adaptive multistage interference cancellation receiver within a CDMA system to be employed at the cellular radio base station. A closed form expression for the probability of bit error for this adaptive multistage interference cancellation receiver is derived, using a Gaussian approximation for Multiple Access Interference (MAI). The Bit Error Rate (BER) after any stage of interference cancellation can be computed from the signal to noise ratio, number of users and processing gain of the CDMA system. The BER expressions are extended to derive asymptotic limits on the performance of interference cancellation as the number of cancellation stages approaches infinity, demonstrating a fundamental limit on the performance improvement that can be expected from any multistage interference cancellation scheme. Furthermore, the analysis quantifies conditions under which interference cancellation may degrade performance. This thesis also extends a software implementation of the Multistage Rake receiver for a wide range of channel models including Gaussian noise, MAI, multipath propagation and near-far effects. Simulation results demonstrate the robustness of the Multistage Rake receiver to near-far effects and manifold capacity improvement compared to conventional demodulation techniques.en
dc.description.degreeMaster of Scienceen
dc.format.extentviii, 139 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-02132009-172635en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-02132009-172635/en
dc.identifier.urihttp://hdl.handle.net/10919/41117en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1995.K385.pdfen
dc.relation.isformatofOCLC# 34353614en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectbit error ratesen
dc.subject.lccLD5655.V855 1995.K385en
dc.titleAn adaptive multistage interference cancellation receiver for CDMAen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineElectrical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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