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Article: ML joint CFO and channel estimation in OFDM systems with timing ambiguity

TitleML joint CFO and channel estimation in OFDM systems with timing ambiguity
Authors
KeywordsCarrier frequency offset (CFO)
Channel estimation
Cramér-Rao bound
Maximum likelihood (ML)
Orthogonal frequency-division multiplexing (OFDM)
Issue Date2008
PublisherIEEE
Citation
Ieee Transactions On Wireless Communications, 2008, v. 7 n. 7, p. 2436-2440 How to Cite?
AbstractThis letter addresses the problem of joint estimation of carrier frequency offset (CFO) and channel for OFDM systems in the presence of timing ambiguity. Based on two signal models for quasi-synchronized OFDM systems, two joint CFO and channel estimators are derived from the Maximum Likelihood (ML) criterion. The first estimator obtained is a joint estimator for all unknown parameters, which needs a multi-dimensional search. The second estimator has a reduced complexity, but its performance slightly degrades compared with the first one. Through MSE analyses, we find that when the number of subcarriers is large, the two estimators are equivalent. © 2008 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/58744
ISSN
2015 Impact Factor: 2.925
2015 SCImago Journal Rankings: 2.340
ISI Accession Number ID
Funding AgencyGrant Number
Council of Hong KongHKU7168/03E
Funding Information:

The associate editor coordinating the review of this letter and approving it for publication was G. Vitetta. This work was supported by grant HKU7168/03E from the Research Grants Council of Hong Kong.

References

 

DC FieldValueLanguage
dc.contributor.authorChen, Jen_HK
dc.contributor.authorWu, YCen_HK
dc.contributor.authorMa, Sen_HK
dc.contributor.authorNg, TSen_HK
dc.date.accessioned2010-05-31T03:36:09Z-
dc.date.available2010-05-31T03:36:09Z-
dc.date.issued2008en_HK
dc.identifier.citationIeee Transactions On Wireless Communications, 2008, v. 7 n. 7, p. 2436-2440en_HK
dc.identifier.issn1536-1276en_HK
dc.identifier.urihttp://hdl.handle.net/10722/58744-
dc.description.abstractThis letter addresses the problem of joint estimation of carrier frequency offset (CFO) and channel for OFDM systems in the presence of timing ambiguity. Based on two signal models for quasi-synchronized OFDM systems, two joint CFO and channel estimators are derived from the Maximum Likelihood (ML) criterion. The first estimator obtained is a joint estimator for all unknown parameters, which needs a multi-dimensional search. The second estimator has a reduced complexity, but its performance slightly degrades compared with the first one. Through MSE analyses, we find that when the number of subcarriers is large, the two estimators are equivalent. © 2008 IEEE.en_HK
dc.languageengen_HK
dc.publisherIEEEen_HK
dc.relation.ispartofIEEE Transactions on Wireless Communicationsen_HK
dc.rights©2008 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 estimationen_HK
dc.subjectCramér-Rao bounden_HK
dc.subjectMaximum likelihood (ML)en_HK
dc.subjectOrthogonal frequency-division multiplexing (OFDM)en_HK
dc.titleML joint CFO and channel estimation in OFDM systems with timing ambiguityen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1536-1276&volume=7&spage=2436&epage=2440&date=2008&atitle=ML+Joint+CFO+and+Channel+Estimation+in+OFDM+systems+with+Timing+Ambiguityen_HK
dc.identifier.emailWu, YC: ycwu@hkucc.hku.hken_HK
dc.identifier.emailMa, S: sdma@eee.hku.hken_HK
dc.identifier.emailNg, TS: tsng@eee.hku.hken_HK
dc.identifier.authorityWu, YC=rp00195en_HK
dc.identifier.authorityMa, S=rp00153en_HK
dc.identifier.authorityNg, TS=rp00159en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1109/TWC.2008.070026en_HK
dc.identifier.scopuseid_2-s2.0-48149089636en_HK
dc.identifier.hkuros149164en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-48149089636&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume7en_HK
dc.identifier.issue7en_HK
dc.identifier.spage2436en_HK
dc.identifier.epage2440en_HK
dc.identifier.isiWOS:000259366900006-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridChen, J=23007435700en_HK
dc.identifier.scopusauthoridWu, YC=7406894786en_HK
dc.identifier.scopusauthoridMa, S=8553949000en_HK
dc.identifier.scopusauthoridNg, TS=7402229975en_HK

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