Per-antenna rate and power control for MIMO layered architectures in the low- and high-power regimes

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Lozano A. Per-antenna rate and power control for MIMO layered architectures in the low- and high-power regimes. IEEE Transactions on Communications. 2010; 58(2): 652-659. DOI 10.1109/TCOMM.2010.02.080557
http://hdl.handle.net/10230/13025
To cite or link this document: http://hdl.handle.net/10230/13025
dc.contributor.author Lozano Solsona, Àngel
dc.contributor.other Universitat Pompeu Fabra
dc.date.accessioned 2011-11-11T12:50:42Z
dc.date.available 2011-11-11T12:50:42Z
dc.date.issued 2010
dc.identifier.citation Lozano A. Per-antenna rate and power control for MIMO layered architectures in the low- and high-power regimes. IEEE Transactions on Communications. 2010; 58(2): 652-659. DOI 10.1109/TCOMM.2010.02.080557
dc.identifier.issn 0090-6778
dc.identifier.uri http://hdl.handle.net/10230/13025
dc.description.abstract In a MIMO layered architecture, several codewords are transmitted from a multiplicity of antennas. Although the spectral efficiency is maximized if the rates of these codewords are separately controlled, the feedback rate within the link adaptation loop is reduced if they are constrained to be identical. This poses a direct tradeoff between performance and feedback overhead. This paper provides analytical expressions that quantify the difference in spectral efficiency between both approaches for arbitrary numbers of antennas. Specifically, the characterization takes place in the realm of the low- and highpower regimes via expansions that are shown to have a wide range of validity. In addition, the possibility of adjusting the transmit power of each codeword individually is considered as an alternative to the separate control of their rates. Power allocation, however, turns out to be inferior to rate control within the context of this problem.
dc.language.iso eng
dc.publisher Institute of Electrical and Electronics Engineers (IEEE)
dc.rights © 2010 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. The final published article can be found at http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=5407630&isnumber=5407594
dc.subject.other Ràdio Antenes
dc.subject.other Comunicació sense fil, Sistemes de
dc.title Per-antenna rate and power control for MIMO layered architectures in the low- and high-power regimes
dc.type info:eu-repo/semantics/article
dc.identifier.doi http://dx.doi.org/10.1109/TCOMM.2010.02.080557
dc.subject.keyword Spectral efficiency
dc.subject.keyword Mutual information
dc.subject.keyword MIMO
dc.subject.keyword Multiantenna
dc.subject.keyword BLAST
dc.subject.keyword PARC
dc.subject.keyword Low-power
dc.subject.keyword High-power
dc.rights.accessRights info:eu-repo/semantics/openAccess
dc.type.version info:eu-repo/semantics/acceptedVersion


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