Optimum power allocation for parallel Gaussian channels with arbitrary input distributions
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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 2012-01-19T14:00:13Z
- dc.date.available 2012-01-19T14:00:13Z
- dc.date.issued 2006ca
- dc.description.abstract The mutual information of independent parallel Gaussian-noise channels is maximized, under an average power constraint, by independent Gaussian inputs whose power is allocated according to the waterfilling policy. In practice, discrete signalling constellations with limited peak-to-average ratios (m-PSK, m-QAM, etc) are used in lieu of the ideal Gaussian /nsignals. This paper gives the power allocation policy that maximizes the mutual information /nover parallel channels with arbitrary input distributions. Such policy admits a graphical interpretation, referred to as mercury/waterfilling, which generalizes the waterfilling solution and allows retaining some of its intuition. The relationship between mutual information of Gaussian channels and nonlinear minimum mean-square error proves key to solving the power allocation problem.en
- dc.format.mimetype application/pdfca
- dc.identifier.citation Lozano A, Tulino A M, Verdu S. Optimum power allocation for parallel Gaussian channels with arbitrary input distributions. IEEE Transactions on Information Theory. 2006; 52(7): 3033-3051. DOI 10.1109/TIT.2006.876220
- dc.identifier.doi http://dx.doi.org/10.1109/TIT.2006.876220
- dc.identifier.issn 0018-9448
- dc.identifier.uri http://hdl.handle.net/10230/16123
- dc.language.iso engca
- dc.publisher Institute of Electrical and Electronics Engineers (IEEE)ca
- dc.relation.ispartof IEEE Transactions on Information Theory. 2006;52(7):3033-51
- dc.rights © 2006 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/TIT.2006.876220ca
- 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 Channel Capacityen
- dc.subject.keyword Mutual Informationen
- dc.subject.keyword MMSEen
- dc.subject.other Ràdio -- Interferènciesca
- dc.subject.other Tractament del senyalca
- dc.title Optimum power allocation for parallel Gaussian channels with arbitrary input distributionsca
- dc.type info:eu-repo/semantics/articleca
- dc.type.version info:eu-repo/semantics/acceptedVersionen