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Opportunistic beamforming in OFDMA systems

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dc.contributor.author Zarbouti, DA en
dc.contributor.author Kaklamani, DI en
dc.contributor.author Tsoulos, GV en
dc.contributor.author Athanasiadou, GE en
dc.date.accessioned 2014-03-01T02:46:54Z
dc.date.available 2014-03-01T02:46:54Z
dc.date.issued 2010 en
dc.identifier.uri http://hdl.handle.net/123456789/32930
dc.subject Blocking Probability en
dc.subject Cross Layer en
dc.subject Performance Analysis en
dc.subject qos provisioning en
dc.subject Radio Resource Management en
dc.subject Rate Adaptation en
dc.subject Resource Allocation en
dc.subject.other Comparative performance analysis en
dc.subject.other Cross-layer en
dc.subject.other OFDMA systems en
dc.subject.other Operational scenario en
dc.subject.other Opportunistic beamforming en
dc.subject.other Power controlled en
dc.subject.other Radio resource management en
dc.subject.other Rate adaptation en
dc.subject.other Simulation result en
dc.subject.other System fairness en
dc.subject.other Transmit power en
dc.subject.other Beamforming en
dc.subject.other Blocking probability en
dc.subject.other Information science en
dc.subject.other Interfaces (computer) en
dc.subject.other Optimization en
dc.subject.other Quality of service en
dc.subject.other Resource allocation en
dc.subject.other Throughput en
dc.subject.other Frequency division multiple access en
dc.title Opportunistic beamforming in OFDMA systems en
heal.type conferenceItem en
heal.identifier.primary 10.1109/PCI.2010.24 en
heal.identifier.secondary http://dx.doi.org/10.1109/PCI.2010.24 en
heal.identifier.secondary 5600459 en
heal.publicationDate 2010 en
heal.abstract The opportunistic beamforming (OB) technique in multicellular OFDMA networks is investigated in this paper. For this reason, three cross-layer radio resource management (RRM) algorithms for OFDMA operational scenarios that are based on typical resource allocation targets such as minimization of transmit power, maximization of throughput and interference averaging are considered. The OB concept is combined with the considered RRM algorithms and a comparative performance analysis between the two types of resulted networks (omni and OB) is performed in terms of throughput, blocking probability and fairness. The simulation results suggest that OB is preferred for OFDMA systems with opportunistic rate adaptation rather than power controlled systems which offer QoS provision. According to the presented results, OB provides to OFDMA systems with opportunistic rate adaptation a ∼13% throughput gain and ∼75% gain in terms of blocking probability. In addition, it is shown that the combination of OB with interference averaging RRMalgorithms has a minor bene0cial impact only on the system fairness. © 2010 IEEE. en
heal.journalName Proceedings - 14th Panhellenic Conference on Informatics, PCI 2010 en
dc.identifier.doi 10.1109/PCI.2010.24 en
dc.identifier.spage 93 en
dc.identifier.epage 98 en


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