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Article: Joint semiblind frequency offset and channel estimation for multiuser MIMO-OFDM uplink

TitleJoint semiblind frequency offset and channel estimation for multiuser MIMO-OFDM uplink
Authors
KeywordsCarrier frequency offset (CFO)
Channel estimation, frequencyoffset
Multiple-input multiple-output (MIMO)
Multiuser
Orthogonal frequency-division multiplexing (OFDM)
Semiblind
Subspace method
Zero padding
Issue Date2007
PublisherI E E E. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=26
Citation
Ieee Transactions On Communications, 2007, v. 55 n. 12, p. 2270-2278 How to Cite?
AbstractA semiblind method is proposed for simultaneously estimating the carrier frequency offsets (CFOs) and channels of an uplink multiuser multiple-input multiple-output orthogonal frequency-division multiplexing (MIMO-OFDM) system. By incorporating the CFOs into the transmitted symbols and channels, the MIMO-OFDM with CFO is remodeled into an MIMO-OFDM without CFO. The known blind method for channel estimation (Zeng and Ng in 2004) (Y. H. Zeng and T. S. Ng, "A semi-blind channel estimation method for multi-user multi-antenna OFDM systems," IEEE Trans. Signal Process., vol. 52, no. 5, pp. 1419-1429, May 2004.) is then directly used for the remodeled system to obtain the shaped channels with an ambiguity matrix. A pilot OFDM block for each user is then exploited to resolve the CFOs and the ambiguity matrix. Two dedicated pilot designs, periodical and consecutive pilots, are discussed. Based on each pilot design and the estimated shaped channels, two methods are proposed to estimate the CFOs. As a result, based on the second-order statistics (SOS) of the received signal and one pilot OFDM block, the CFOs and channels are found simultaneously. Finally, a fast equalization method is given to recover the signals corrupted by the CFOs. © 2007 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/57462
ISSN
2015 Impact Factor: 2.298
2015 SCImago Journal Rankings: 1.659
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorZeng, Yen_HK
dc.contributor.authorLeyman, RAen_HK
dc.contributor.authorNg, TSen_HK
dc.date.accessioned2010-04-12T01:37:20Z-
dc.date.available2010-04-12T01:37:20Z-
dc.date.issued2007en_HK
dc.identifier.citationIeee Transactions On Communications, 2007, v. 55 n. 12, p. 2270-2278en_HK
dc.identifier.issn0090-6778en_HK
dc.identifier.urihttp://hdl.handle.net/10722/57462-
dc.description.abstractA semiblind method is proposed for simultaneously estimating the carrier frequency offsets (CFOs) and channels of an uplink multiuser multiple-input multiple-output orthogonal frequency-division multiplexing (MIMO-OFDM) system. By incorporating the CFOs into the transmitted symbols and channels, the MIMO-OFDM with CFO is remodeled into an MIMO-OFDM without CFO. The known blind method for channel estimation (Zeng and Ng in 2004) (Y. H. Zeng and T. S. Ng, "A semi-blind channel estimation method for multi-user multi-antenna OFDM systems," IEEE Trans. Signal Process., vol. 52, no. 5, pp. 1419-1429, May 2004.) is then directly used for the remodeled system to obtain the shaped channels with an ambiguity matrix. A pilot OFDM block for each user is then exploited to resolve the CFOs and the ambiguity matrix. Two dedicated pilot designs, periodical and consecutive pilots, are discussed. Based on each pilot design and the estimated shaped channels, two methods are proposed to estimate the CFOs. As a result, based on the second-order statistics (SOS) of the received signal and one pilot OFDM block, the CFOs and channels are found simultaneously. Finally, a fast equalization method is given to recover the signals corrupted by the CFOs. © 2007 IEEE.en_HK
dc.languageengen_HK
dc.publisherI E E E. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=26en_HK
dc.relation.ispartofIEEE Transactions on Communicationsen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rights©2007 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.subjectCarrier frequency offset (CFO)en_HK
dc.subjectChannel estimation, frequencyoffseten_HK
dc.subjectMultiple-input multiple-output (MIMO)en_HK
dc.subjectMultiuseren_HK
dc.subjectOrthogonal frequency-division multiplexing (OFDM)en_HK
dc.subjectSemiblinden_HK
dc.subjectSubspace methoden_HK
dc.subjectZero paddingen_HK
dc.titleJoint semiblind frequency offset and channel estimation for multiuser MIMO-OFDM uplinken_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0090-6778&volume=55&issue=12&spage=2270&epage=2278&date=2007&atitle=Joint+semiblind+frequency+offset+and+channel+estimation+for+multiuser+MIMO-OFDM+uplinken_HK
dc.identifier.emailNg, TS:tsng@eee.hku.hken_HK
dc.identifier.authorityNg, TS=rp00159en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1109/TCOMM.2007.910637en_HK
dc.identifier.scopuseid_2-s2.0-65449119573en_HK
dc.identifier.hkuros152274-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-65449119573&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume55en_HK
dc.identifier.issue12en_HK
dc.identifier.spage2270en_HK
dc.identifier.epage2278en_HK
dc.identifier.isiWOS:000251745400010-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridZeng, Y=7402981440en_HK
dc.identifier.scopusauthoridLeyman, RA=23477681100en_HK
dc.identifier.scopusauthoridNg, TS=7402229975en_HK

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