DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, I. | ko |
dc.contributor.author | Park, I.-S. | ko |
dc.contributor.author | Lee, Yong-Hoon | ko |
dc.date.accessioned | 2009-11-10T04:51:16Z | - |
dc.date.available | 2009-11-10T04:51:16Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2006 | - |
dc.identifier.citation | IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, v.55, no.4, pp.1195 - 1207 | - |
dc.identifier.issn | 0018-9545 | - |
dc.identifier.uri | http://hdl.handle.net/10203/12338 | - |
dc.description.abstract | An adaptive subcarrier allocation and an adaptive modulation for multiuser orthogonal frequency-division multiplexing (OFDM) are considered. The optimal subcarrier and bit allocation problems, which are previously formulated as nonlinear optimizations, are reformulated into and solved by integer programming (IP). A suboptimal approach that performs subcarrier allocation and bit loading separately is proposed. It is shown that the subcarrier allocation in this approach can be optimized by the linear-programming (LP) relaxation of IP, while the bit loading can be performed in a manner similar to a single-user OFDM. In addition, a heuristic method for solving the LP problem is presented. The LP-based suboptimal and heuristic algorithms are considerably simpler to implement than the optimal IP, plus their performances are close to those of the optimal approach. | - |
dc.language | English | - |
dc.language.iso | en_US | en |
dc.publisher | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | - |
dc.title | Use of linear programming for dynamic subcarrier and bit allocation in multiuser OFDM | - |
dc.type | Article | - |
dc.identifier.wosid | 000239264300010 | - |
dc.identifier.scopusid | 2-s2.0-33746372436 | - |
dc.type.rims | ART | - |
dc.citation.volume | 55 | - |
dc.citation.issue | 4 | - |
dc.citation.beginningpage | 1195 | - |
dc.citation.endingpage | 1207 | - |
dc.citation.publicationname | IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY | - |
dc.identifier.doi | 10.1109/TVT.2006.877490 | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Lee, Yong-Hoon | - |
dc.contributor.nonIdAuthor | Kim, I. | - |
dc.contributor.nonIdAuthor | Park, I.-S. | - |
dc.type.journalArticle | Article; Proceedings Paper | - |
dc.subject.keywordAuthor | integer programming (IP) | - |
dc.subject.keywordAuthor | linear programming (LP) | - |
dc.subject.keywordAuthor | multiuser orthogonal frequency-division multiplexing (OFDM) | - |
dc.subject.keywordAuthor | subcarrier and bit allocation | - |
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