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AMPS co-channel interference rejection techniques and their impact on system capacity

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dc.contributor.authorHe, Rongen
dc.contributor.committeechairReed, Jeffrey H.en
dc.contributor.committeememberWoerner, Brian D.en
dc.contributor.committeememberRappaport, Theodore S.en
dc.contributor.committeememberBostian, Charles W.en
dc.contributor.committeememberRibbens, Calvin J.en
dc.contributor.departmentElectrical Engineeringen
dc.date.accessioned2014-03-14T21:19:32Zen
dc.date.adate2008-10-02en
dc.date.available2014-03-14T21:19:32Zen
dc.date.issued1996-07-05en
dc.date.rdate2008-10-02en
dc.date.sdate2008-10-02en
dc.description.abstractWith the rapid and ubiquitous deployment of mobile communications in recent years, cochannel interference has become a critical problem because of its impact on system capacity and quality of service. The conventional approach to minimizing interference is through better cell planning and design. Digital Signal Processing COSP) based interference rejection techniques provide an alternative approach to minimize interference and improve system capacity. Single channel adaptive interference rejection techniques have long been used for enhancing digitally modulated signals. However these techniques are not well suited for analog mobile phone system (AMPS) and narrowband AMPS (NAMPS) signals because of the large spectral overlap of the signals of interest with interfering signals and because of the lack of a well defined signal structure that can be used to separate the signals. Our research has created novel interference rejection techniques based on time-dependent filtering which exploit spectral correlation characteristics exhibited by AMPS and NAMPS signals. A mathematical analysis of the cyclostationary features of AMPS and NAMPS signals is presented to help explain and analyze these techniques. Their performance is investigated using both simulated and digitized data. The impact of these new techniques on AMPS system capacity is also studied. The adaptive algorithms and structures are refined to be robust in various channel environments and to be computationally efficient.en
dc.description.degreePh. D.en
dc.format.extentxi, 199 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-10022008-063026en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-10022008-063026/en
dc.identifier.urihttp://hdl.handle.net/10919/39536en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V856_1996.H4.pdfen
dc.relation.isformatofOCLC# 35838349en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectwireless communicationsen
dc.subjectAMPSen
dc.subjectadaptive filteringen
dc.subjectcyclostationarityen
dc.subjectcellular capacityen
dc.subjectinterference rejectionen
dc.subject.lccLD5655.V856 1996.H4en
dc.titleAMPS co-channel interference rejection techniques and their impact on system capacityen
dc.typeDissertationen
dc.type.dcmitypeTexten
thesis.degree.disciplineElectrical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

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