Minimizing Power in Wireless OFDMA with Limited Rate Feedback

dc.contributor.author	Garcia Marques, Antonio
dc.contributor.author	Giannakis, Georgios B.
dc.contributor.author	Digham, Fadel F.
dc.contributor.author	Ramos, Javier
dc.date.accessioned	2009-06-22T09:52:37Z
dc.date.available	2009-06-22T09:52:37Z
dc.date.issued	2007-03-11T09:52:37Z
dc.description.abstract	Emerging 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.description.departamento	Teoría de la Señal y Comunicaciones
dc.identifier.issn	1525-3511
dc.identifier.uri	http://hdl.handle.net/10115/2233
dc.language.iso	en	es
dc.rights.accessRights	info:eu-repo/semantics/openAccess
dc.subject	Telecomunicaciones	es
dc.subject.unesco	3325 Tecnología de las Telecomunicaciones	es
dc.title	Minimizing Power in Wireless OFDMA with Limited Rate Feedback	es
dc.type	info:eu-repo/semantics/conferenceObject	es

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