Synergy/Perforation Control for 16-QAM in orthogonal code hopping multiplexing

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 971
  • Download : 615
DC FieldValueLanguage
dc.contributor.authorMoon, Sung Hoko
dc.contributor.authorKwon, Jae Kyunko
dc.contributor.authorSung, Dan Keunko
dc.date.accessioned2007-10-04T09:37:03Z-
dc.date.available2007-10-04T09:37:03Z-
dc.date.created2012-02-06-
dc.date.created2012-02-06-
dc.date.issued2007-07-
dc.identifier.citationIEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, v.56, no.4, pp.1704 - 1715-
dc.identifier.issn0018-9545-
dc.identifier.urihttp://hdl.handle.net/10203/1640-
dc.description.abstractOrthogonal code hopping multiplexing (OCHM) is a statistical multiplexing scheme designed to accommodate a large number of allowable downlink channels in code division multiple access (CDMA) systems. However, OCHM may yield a worse bit error rate (BER) performance than the conventional CDMA systems due to code collisions. Therefore, a synergy/perforation operation, which is a control scheme for mapping code-colliding modulation symbols to specific constellation points on the I-Q plane, is needed to compensate for BER degradation, and this synergy/perforation operation should be defined separately with modulation types. Previously, synergy/perforation control schemes for quadrature phase shift keying (QPSK) and binary phase-shift keying (BPSK) have been proposed, but there has been no study of 16-quadratic-amplitude modulation (16-QAM) in OCHM. We propose two synergy/perforation control schemes for 16-QAM in OCHM and a log-likelihood ratio conversion scheme for 16-QAM in OCHM. The proposed control schemes are evaluated by an analytical approach and simulations and are compared to the previous scheme for QPSK modulation. We show that the proposed control scheme has a performance similar to that of QPSK modulation in terms of the mean synergy ratio for code-colliding modulation symbols and additional required E-b/N-o.-
dc.description.sponsorshipThis work was supported in part by the Ministry of Information and Communication, Korea, under the Broadband OFDM Mobile Access Information Technology Research Center support program supervised by Institute of Information Technology Assessment and in part by the Korea Research Foundation Grant funded by the Korean Government Ministry of Education Human Resources Development under Grant KRF-2004-908- D00039en
dc.languageEnglish-
dc.language.isoen_USen
dc.publisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC-
dc.subjectRATIO LLR CONVERSION-
dc.subjectPERFORMANCE-
dc.titleSynergy/Perforation Control for 16-QAM in orthogonal code hopping multiplexing-
dc.typeArticle-
dc.identifier.wosid000248282000026-
dc.identifier.scopusid2-s2.0-34547570891-
dc.type.rimsART-
dc.citation.volume56-
dc.citation.issue4-
dc.citation.beginningpage1704-
dc.citation.endingpage1715-
dc.citation.publicationnameIEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY-
dc.identifier.doi10.1109/TVT.2007.895594-
dc.embargo.liftdate9999-12-31-
dc.embargo.terms9999-12-31-
dc.contributor.localauthorSung, Dan Keun-
dc.contributor.nonIdAuthorMoon, Sung Ho-
dc.contributor.nonIdAuthorKwon, Jae Kyun-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorlog-likelihood ratio (LLR)-
dc.subject.keywordAuthormodulation-
dc.subject.keywordAuthororthogonal code-hopping multiplexing (OCHM)-
dc.subject.keywordAuthorperforation-
dc.subject.keywordAuthorsynergy-
dc.subject.keywordAuthor16-quadratic-amplitude modulation (QAM)-
dc.subject.keywordPlusRATIO LLR CONVERSION-
dc.subject.keywordPlusPERFORMANCE-
Appears in Collection
EE-Journal Papers(저널논문)
Files in This Item

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0