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Optimum power allocation and bit loading for BICM systems
dc.contributor.author | Matas Navarro, David |
dc.contributor.author | Lamarca Orozco, M. Meritxell |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions |
dc.date.accessioned | 2011-05-05T08:18:12Z |
dc.date.available | 2011-05-05T08:18:12Z |
dc.date.created | 2010-07-01 |
dc.date.issued | 2010-07-01 |
dc.identifier.citation | Matas, D.; Lamarca, M. Optimum power allocation and bit loading for BICM systems. "IEEE transactions on communications", 01 Juliol 2010, vol. 58, núm. 8, p. 2314-2323. |
dc.identifier.issn | 0090-6778 |
dc.identifier.uri | http://hdl.handle.net/2117/12470 |
dc.description.abstract | This paper introduces a joint bit loading and power allocation algorithm for systems combining bit-interleaved coded modulation (BICM) with multicarrier transmission. The proposed algorithm maximizes the mutual information, so it can be regarded as a generalization of mercury/waterfilling policy that incorporates bit loading. The followed approach relies on irregular modulation and power to cast the problem in the framework of convex optimization. This allows to derive the optimum solution without resorting to greedy algorithms, embedding the bit loading in the definition of an equivalent constellation such that the complexity increase with respect to mercury/waterfilling is negligible. While irregular modulation plays a key role in algorithm definition, it is proved that only a few subcarriers employ it and it is shown that a practical low complexity algorithm can be obtained with minimal losses that does not use irregular modulation. |
dc.format.extent | 10 p. |
dc.language.iso | eng |
dc.subject | Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telemàtica i xarxes d'ordinadors::Xarxes de banda ampla |
dc.subject.lcsh | Orthogonal frequency division multiplexing |
dc.subject.lcsh | OFDM |
dc.subject.lcsh | BICM |
dc.title | Optimum power allocation and bit loading for BICM systems |
dc.type | Article |
dc.subject.lemac | Banda ampla, Sistemes de comunicació de |
dc.contributor.group | Universitat Politècnica de Catalunya. SPCOM - Grup de Recerca de Processament del Senyal i Comunicacions |
dc.identifier.doi | 10.1109/TCOMM.2010.062310.080128 |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5497976 |
dc.rights.access | Open Access |
local.identifier.drac | 2642109 |
dc.description.version | Postprint (published version) |
local.citation.author | Matas, D.; Lamarca, M. |
local.citation.publicationName | IEEE transactions on communications |
local.citation.volume | 58 |
local.citation.number | 8 |
local.citation.startingPage | 2314 |
local.citation.endingPage | 2323 |
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