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Article: A semi-blind channel estimation method for multiuser multiantenna OFDM systems

TitleA semi-blind channel estimation method for multiuser multiantenna OFDM systems
Authors
KeywordsBlind channel identification
MIMO
Multiatenna
Multiuser
OFDM
Semi-blind
Subspace method
Zero-padding
Issue Date2004
PublisherIEEE.
Citation
IEEE Transactions on Signal Processing, 2004, v. 52 n. 5, p. 1419-1429 How to Cite?
AbstractA subspace-based blind method is proposed for estimating the channel responses of a multiuser and multiantenna orthogonal frequency division multiplexing (OFDM) uplink system. It gives estimations to all channel responses subject to a scalar matrix ambiguity and does not need precise channel order information (only upper bound for the orders is required). Furthermore, the scalar ambiguity matrix can be easily resolved by using only one pilot OFDM block, given that the number of users is smaller than the number of symbols in the pilot symbol block. Equalization methods are discussed based on the estimated channels. By using partial knowledge of the channels, a multipath subspace method is proposed that reduces the computational complexity. Simulations show that the methods are effective and robust.
Persistent Identifierhttp://hdl.handle.net/10722/42971
ISSN
2015 Impact Factor: 2.624
2015 SCImago Journal Rankings: 2.004
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorZeng, Yen_HK
dc.contributor.authorNg, TSen_HK
dc.date.accessioned2007-03-23T04:35:45Z-
dc.date.available2007-03-23T04:35:45Z-
dc.date.issued2004en_HK
dc.identifier.citationIEEE Transactions on Signal Processing, 2004, v. 52 n. 5, p. 1419-1429en_HK
dc.identifier.issn1053-587Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/42971-
dc.description.abstractA subspace-based blind method is proposed for estimating the channel responses of a multiuser and multiantenna orthogonal frequency division multiplexing (OFDM) uplink system. It gives estimations to all channel responses subject to a scalar matrix ambiguity and does not need precise channel order information (only upper bound for the orders is required). Furthermore, the scalar ambiguity matrix can be easily resolved by using only one pilot OFDM block, given that the number of users is smaller than the number of symbols in the pilot symbol block. Equalization methods are discussed based on the estimated channels. By using partial knowledge of the channels, a multipath subspace method is proposed that reduces the computational complexity. Simulations show that the methods are effective and robust.en_HK
dc.format.extent324351 bytes-
dc.format.extent8772 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypetext/plain-
dc.languageengen_HK
dc.publisherIEEE.en_HK
dc.relation.ispartofIEEE Transactions on Signal Processingen_HK
dc.rights©2004 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.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectBlind channel identificationen_HK
dc.subjectMIMOen_HK
dc.subjectMultiatennaen_HK
dc.subjectMultiuseren_HK
dc.subjectOFDMen_HK
dc.subjectSemi-blinden_HK
dc.subjectSubspace methoden_HK
dc.subjectZero-paddingen_HK
dc.titleA semi-blind channel estimation method for multiuser multiantenna OFDM systemsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1053-587X&volume=52&issue=5&spage=1419&epage=1429&date=2004&atitle=A+semi-blind+channel+estimation+method+for+multiuser+multiantenna+OFDM+systemsen_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/TSP.2004.826183en_HK
dc.identifier.scopuseid_2-s2.0-2442445141en_HK
dc.identifier.hkuros90255-
dc.identifier.hkuros119791-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-2442445141&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume52en_HK
dc.identifier.issue5en_HK
dc.identifier.spage1419en_HK
dc.identifier.epage1429en_HK
dc.identifier.isiWOS:000220808600026-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridZeng, Y=7402981440en_HK
dc.identifier.scopusauthoridNg, TS=7402229975en_HK

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