Optimum power allocation for multiuser OFDM with arbitrary signal constellations
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- dc.contributor.author Lozano Solsona, Angelca
- dc.contributor.author Tulino, Antonia M.ca
- dc.contributor.author Verdú, Sergioca
- dc.date.accessioned 2012-01-26T12:16:24Z
- dc.date.available 2012-01-26T12:16:24Z
- dc.date.issued 2008ca
- dc.description.abstract This paper formulates power allocation policies that maximize the region of mutual informations/nachievable in multiuser downlink OFDM channels. Arbitrary partitioning of/nthe available tones among users and arbitrary modulation formats, possibly different for/nevery user, are considered. Two distinct policies are derived, respectively for slow fading/nchannels tracked instantaneously by the transmitter and for fast fading channels known/nonly statistically thereby. With instantaneous channel tracking, the solution adopts the/nform of a multiuser mercury/waterfilling procedure that generalizes the single-user mercury//nwaterfilling introduced in [1, 2]. With only statistical channel information, in contrast,/nthe mercury/waterfilling interpretation is lost. For both policies, a number of limiting/nregimes are explored and illustrative examples are provided.en
- dc.format.mimetype application/pdfca
- dc.identifier.citation Lozano A, Tulino A M, Verdu S. Optimum power allocation for multiuser OFDM with arbitrary signal constellations. IEEE Transactions on Communications. 2008; 56(5): 828-837. DOI 10.1109/TCOMM.2008.060211
- dc.identifier.doi http://dx.doi.org/10.1109/TCOMM.2008.060211
- dc.identifier.issn 0090-6778
- dc.identifier.uri http://hdl.handle.net/10230/16144
- dc.language.iso engca
- dc.publisher Institute of Electrical and Electronics Engineers (IEEE)ca
- dc.relation.ispartof IEEE Transactions on Communications. 2008;56(5):828-37
- dc.rights © 2008 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works./nThe final published article can be found at http://dx.doi.org/10.1109/TCOMM.2008.060211ca
- dc.rights.accessRights info:eu-repo/semantics/openAccessen
- dc.subject.keyword Gaussian channelsen
- dc.subject.keyword Power allocationen
- dc.subject.keyword Waterfillingen
- dc.subject.keyword Mercury/waterfillingen
- dc.subject.keyword Mutual informationen
- dc.subject.keyword MMSEen
- dc.subject.keyword OFDMen
- dc.subject.keyword Downlinken
- dc.subject.other Tractament del senyalca
- dc.subject.other Comunicacions mòbils, Sistemes deca
- dc.subject.other Ràdio -- interferènciesca
- dc.title Optimum power allocation for multiuser OFDM with arbitrary signal constellationsca
- dc.type info:eu-repo/semantics/articleca
- dc.type.version info:eu-repo/semantics/acceptedVersionen