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Article: Estimation and compensation of CFO and I/Q imbalance in OFDM systems under timing ambiguity

TitleEstimation and compensation of CFO and I/Q imbalance in OFDM systems under timing ambiguity
Authors
Cai, XWu, YCLin, HYamashita, K
KeywordsCarrier frequency offset (CFO)
channel estimation
I/Q imbalance
least-square estimation (LSE)
orthogonal frequency-division multiplexing (OFDM)
timing offset (TO)
Issue Date2011
PublisherI E E E. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=25
Citation
Ieee Transactions On Vehicular Technology, 2011, v. 60 n. 3, p. 1200-1205 How to Cite?
DOI: http://dx.doi.org/10.1109/TVT.2011.2106525
AbstractThis paper proposes a joint carrier frequency offset (CFO) and In-phase/Quadrature-phase (I/Q) imbalance estimation and compensation method for orthogonal frequency-division-multiplexing (OFDM) systems under timing uncertainty. A matrix representation of the received signal with CFO, timing offset (TO), and I/Q imbalance is first derived. Then, a least-square CFO estimator robust against TO and I/Q imbalance is proposed. The Cramér-Rao bound (CRB) for CFO is also derived. With the estimated CFO and equivalent channel, a compensation method for both frequency-dependent and frequency-independent I/Q imbalances is presented. Simulation results are provided to verify the performances of the proposed methods. © 2011 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/134405
ISSN
0018-9545
2021 Impact Factor: 6.239
2020 SCImago Journal Rankings: 1.365
ISI Accession Number ID
WOS:000288462000040
References
References in Scopus

 

DC FieldValueLanguage
dc.contributor.authorCai, Xen_HK
dc.contributor.authorWu, YCen_HK
dc.contributor.authorLin, Hen_HK
dc.contributor.authorYamashita, Ken_HK
dc.date.accessioned2011-06-17T09:19:40Z-
dc.date.available2011-06-17T09:19:40Z-
dc.date.issued2011en_HK
dc.identifier.citationIeee Transactions On Vehicular Technology, 2011, v. 60 n. 3, p. 1200-1205en_HK
dc.identifier.issn0018-9545en_HK
dc.identifier.urihttp://hdl.handle.net/10722/134405-
dc.description.abstractThis paper proposes a joint carrier frequency offset (CFO) and In-phase/Quadrature-phase (I/Q) imbalance estimation and compensation method for orthogonal frequency-division-multiplexing (OFDM) systems under timing uncertainty. A matrix representation of the received signal with CFO, timing offset (TO), and I/Q imbalance is first derived. Then, a least-square CFO estimator robust against TO and I/Q imbalance is proposed. The Cramér-Rao bound (CRB) for CFO is also derived. With the estimated CFO and equivalent channel, a compensation method for both frequency-dependent and frequency-independent I/Q imbalances is presented. Simulation results are provided to verify the performances of the proposed methods. © 2011 IEEE.en_HK
dc.languageengen_US
dc.publisherI E E E. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=25en_HK
dc.relation.ispartofIEEE Transactions on Vehicular Technologyen_HK
dc.rightsIEEE Transactions on Vehicular Technology. Copyright © IEEE.-
dc.rights©2011 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.-
dc.subjectCarrier frequency offset (CFO)en_HK
dc.subjectchannel estimationen_HK
dc.subjectI/Q imbalanceen_HK
dc.subjectleast-square estimation (LSE)en_HK
dc.subjectorthogonal frequency-division multiplexing (OFDM)en_HK
dc.subjecttiming offset (TO)en_HK
dc.titleEstimation and compensation of CFO and I/Q imbalance in OFDM systems under timing ambiguityen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0018-9545&volume=60&issue=3&spage=1200&epage=1205&date=2011&atitle=Estimation+and+compensation+of+CFO+and+I/Q+imbalance+in+OFDM+systems+under+timing+ambiguity-
dc.identifier.emailWu, YC:ycwu@eee.hku.hken_HK
dc.identifier.authorityWu, YC=rp00195en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1109/TVT.2011.2106525en_HK
dc.identifier.scopuseid_2-s2.0-79952823492en_HK
dc.identifier.hkuros185488en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-79952823492&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume60en_HK
dc.identifier.issue3en_HK
dc.identifier.spage1200en_HK
dc.identifier.epage1205en_HK
dc.identifier.isiWOS:000288462000040-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridCai, X=37041262300en_HK
dc.identifier.scopusauthoridWu, YC=7406894786en_HK
dc.identifier.scopusauthoridLin, H=36079991800en_HK
dc.identifier.scopusauthoridYamashita, K=35333340400en_HK
dc.identifier.issnl0018-9545-

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