Dynamic Code Sharing Algorithms for IP Quality of Service in Wideband CDMA 3G Wireless Networks

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dc.contributor.authorFossa, Carl Edward Jr.en
dc.contributor.committeechairDavis, Nathaniel J. IVen
dc.contributor.committeememberMidkiff, Scott F.en
dc.contributor.committeememberBostian, Charles W.en
dc.contributor.committeememberVaradarajan, Srinidhien
dc.contributor.committeememberPratt, Timothy J.en
dc.contributor.departmentElectrical and Computer Engineeringen
dc.date.accessioned2014-03-14T20:10:44Zen
dc.date.adate2002-04-26en
dc.date.available2014-03-14T20:10:44Zen
dc.date.issued2002-04-22en
dc.date.rdate2003-04-26en
dc.date.sdate2002-04-25en
dc.description.abstractThis research investigated the efficient utilization of wireless bandwidth in Code Division Multiple Access (CDMA)systems that support multiple data rates with Orthogonal Variable Spreading Factor (OVSF)codes. The specific problem being addressed was that currently proposed public-domain algorithms for assigning OVSF codes make inefficient use of wireless bandwidth for bursty data traffic sources with different Quality of Service (QoS) requirements. The purpose of this research was to develop an algorithm for the assignment of OVSF spreading codes in a Third-Generation (3G)Wideband CDMA (WCDMA)system. The goal of this algorithm was to efficiently utilize limited, wireless resources for bursty data traffic sources with different QoS requirements. The key contribution of this research was the implementation and testing of two code sharing techniques which are not implemented in existing OVSF code assignment algorithms. These techniques were termed statistical multiplexing and dynamic code sharing. The statistical multiplexing technique used a shared channel to support multiple bursty traffic sources. The dynamic code sharing technique supported multiple data users by temporarily granting access to dedicated channels. These techniques differed in terms of both complexity and performance guarantees.en
dc.description.degreePh. D.en
dc.identifier.otheretd-04252002-143156en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-04252002-143156/en
dc.identifier.urihttp://hdl.handle.net/10919/27248en
dc.publisherVirginia Techen
dc.relation.haspartFossaDissertation.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectIP QoSen
dc.subjectwireless communicationsen
dc.subjectWCDMAen
dc.subjectOVSF Code Assignmenten
dc.subject3Gen
dc.titleDynamic Code Sharing Algorithms for IP Quality of Service in Wideband CDMA 3G Wireless Networksen
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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