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Article: Downlink transmission of broadband OFCDM systems-part III: Turbo-coded

TitleDownlink transmission of broadband OFCDM systems-part III: Turbo-coded
Authors
KeywordsBroadband OFCDM system
Data transmission
Downlink transmission
Hybrid MCI
Minimum mean-square error
MMSE detection scheme
Multicode interference cancellation
Orthogonal frequency-code-division multiplexing
Turbo-code
Wireless mobile communication
Issue Date2006
PublisherIEEE.
Citation
Ieee Journal On Selected Areas In Communications, 2006, v. 24 n. 1, p. 132-140 How to Cite?
AbstractOrthogonal frequency and code-division multiplexing (OFCDM) systems have been introduced for high-speed data transmission in future wireless mobile communications. In this paper, a hybrid multicode interference cancellation (MCI) and minimum mean-square error (MMSE) detection scheme is presented for the turbo-coded OFCDM systems. Channel estimation based on a code-multiplexed pilot channel is employed. The weights of the hybrid detection are derived theoretically and an effective method to generate the weights in practical applications is proposed. By means of computer simulation, the effects of system parameters on the performance are studied extensively. It is shown that the hybrid detection outperforms pure MMSE detection in various channel conditions, especially for high-level modulation schemes. To carry out interference regeneration for the hybrid detection, the conventional turbo decoding algorithm which only decodes systematic bits should be extended to decode parity bits as well. Moreover, two iterations in turbo decoding are sufficient to provide good performance for the system with the multistage hybrid detection. Finally, given time-domain spreading factor N/sub T/, the system performance improves with frequency-domain spreading factor N/sub F/. However, the frequency diversity gain is saturated when N/sub F/ is large (i.e., N/sub F//spl ges/16). © 2006, IEE.
Persistent Identifierhttp://hdl.handle.net/10722/44745
ISSN
2015 Impact Factor: 3.672
2015 SCImago Journal Rankings: 2.915
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhou, Yen_HK
dc.contributor.authorWang, Jen_HK
dc.contributor.authorSawahashi, Men_HK
dc.date.accessioned2007-10-30T06:09:16Z-
dc.date.available2007-10-30T06:09:16Z-
dc.date.issued2006en_HK
dc.identifier.citationIeee Journal On Selected Areas In Communications, 2006, v. 24 n. 1, p. 132-140en_HK
dc.identifier.issn0733-8716en_HK
dc.identifier.urihttp://hdl.handle.net/10722/44745-
dc.description.abstractOrthogonal frequency and code-division multiplexing (OFCDM) systems have been introduced for high-speed data transmission in future wireless mobile communications. In this paper, a hybrid multicode interference cancellation (MCI) and minimum mean-square error (MMSE) detection scheme is presented for the turbo-coded OFCDM systems. Channel estimation based on a code-multiplexed pilot channel is employed. The weights of the hybrid detection are derived theoretically and an effective method to generate the weights in practical applications is proposed. By means of computer simulation, the effects of system parameters on the performance are studied extensively. It is shown that the hybrid detection outperforms pure MMSE detection in various channel conditions, especially for high-level modulation schemes. To carry out interference regeneration for the hybrid detection, the conventional turbo decoding algorithm which only decodes systematic bits should be extended to decode parity bits as well. Moreover, two iterations in turbo decoding are sufficient to provide good performance for the system with the multistage hybrid detection. Finally, given time-domain spreading factor N/sub T/, the system performance improves with frequency-domain spreading factor N/sub F/. However, the frequency diversity gain is saturated when N/sub F/ is large (i.e., N/sub F//spl ges/16). © 2006, IEE.en_HK
dc.format.extent498167 bytes-
dc.format.extent2894 bytes-
dc.format.extent2319 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypetext/plain-
dc.format.mimetypetext/plain-
dc.languageengen_HK
dc.publisherIEEE.en_HK
dc.relation.ispartofIEEE Journal on Selected Areas in Communicationsen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rights©2006 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.en_HK
dc.subjectBroadband OFCDM systemen_HK
dc.subjectData transmissionen_HK
dc.subjectDownlink transmissionen_HK
dc.subjectHybrid MCIen_HK
dc.subjectMinimum mean-square erroren_HK
dc.subjectMMSE detection schemeen_HK
dc.subjectMulticode interference cancellationen_HK
dc.subjectOrthogonal frequency-code-division multiplexingen_HK
dc.subjectTurbo-codeen_HK
dc.subjectWireless mobile communicationen_HK
dc.titleDownlink transmission of broadband OFCDM systems-part III: Turbo-codeden_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0733-8716&volume=24&issue=1&spage=132&epage=140&date=2006&atitle=Downlink+transmission+of+broadband+OFCDM+systems-part+III:+turbo-codeden_HK
dc.identifier.emailZhou, Y:yqzhou@eee.hku.hken_HK
dc.identifier.authorityZhou, Y=rp00214en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1109/JSAC.2005.858876en_HK
dc.identifier.scopuseid_2-s2.0-33645687122en_HK
dc.identifier.volume24en_HK
dc.identifier.issue1en_HK
dc.identifier.spage132en_HK
dc.identifier.epage140en_HK
dc.identifier.isiWOS:000234679900015-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridZhou, Y=7405367062en_HK
dc.identifier.scopusauthoridWang, J=11439898400en_HK
dc.identifier.scopusauthoridSawahashi, M=7005152759en_HK

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