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Minimizing Power in Wireless OFDMA with Limited Rate Feedback

dc.contributor.authorGarcia Marques, Antonio
dc.contributor.authorGiannakis, Georgios B.
dc.contributor.authorDigham, Fadel F.
dc.contributor.authorRamos, Javier
dc.date.accessioned2009-06-22T09:52:37Z
dc.date.available2009-06-22T09:52:37Z
dc.date.issued2007-03-11T09:52:37Z
dc.identifier.issn1525-3511
dc.identifier.urihttp://hdl.handle.net/10115/2233
dc.description.abstractEmerging applications involving low-cost wireless sensor networks motivate well optimization of multi-user orthogonal frequency-division multiple access (OFDMA) in the power-limited regime. In this context, the present paper relies on limited-rate feedback (LRF) sent from the access point to terminals to minimize the total average transmit-power under individual average rate and error probability constraints. The characterization of optimal bit, power and subcarrier allocation policies based on LRF, as well as optimal channel quantization are provided. Numerical examples corroborate the analytical claims and reveal that significant power savings result even with few fed back bits.es
dc.language.isoenes
dc.subjectTelecomunicacioneses
dc.titleMinimizing Power in Wireless OFDMA with Limited Rate Feedbackes
dc.typeinfo:eu-repo/semantics/conferenceObjectes
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.subject.unesco3325 Tecnología de las Telecomunicacioneses
dc.description.departamentoTeoría de la Señal y Comunicaciones


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