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Article: Timing estimation and resynchronization for amplify-and-forward communication systems

TitleTiming estimation and resynchronization for amplify-and-forward communication systems
Authors
KeywordsAmplify-and-forward (AF)
Asynchronous
Channel estimation
CramrRao bound (CRB)
Relay
Resynchronization
Issue Date2010
PublisherIEEE.
Citation
Ieee Transactions On Signal Processing, 2010, v. 58 n. 4, p. 2218-2229 How to Cite?
AbstractThis paper proposes a general framework to effectively estimate the unknown timing and channel parameters, as well as design efficient timing resynchronization algorithms for asynchronous amplify-and-forward (AF) cooperative communication systems. In order to obtain reliable timing and channel parameters, a least squares (LS) estimator is proposed for initial estimation and an iterative maximum-likelihood (ML) estimator is derived to refine the LS estimates. Furthermore, a timing and channel uncertainty analysis based on the CramrRao bounds (CRB) is presented to provide insights into the system uncertainties resulted from estimation. Using the parameter estimates and uncertainty information in our analysis, timing resynchronization algorithms that are robust to estimation errors are designed jointly at the relays and the destination. The proposed framework is developed for different AF systems with varying degrees of timing misalignment and channel uncertainties and is numerically shown to provide excellent performances that approach the synchronized case with perfect channel information. © 2006 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/124730
ISSN
2015 Impact Factor: 2.624
2015 SCImago Journal Rankings: 2.004
ISI Accession Number ID
Funding AgencyGrant Number
GRFHKU 7181/07E
Funding Information:

This work was supported by Grant GRF HKU 7181/07E.

References

 

DC FieldValueLanguage
dc.contributor.authorLi, Xen_HK
dc.contributor.authorXing, Cen_HK
dc.contributor.authorWu, YCen_HK
dc.contributor.authorChan, SCen_HK
dc.date.accessioned2010-10-31T10:50:52Z-
dc.date.available2010-10-31T10:50:52Z-
dc.date.issued2010en_HK
dc.identifier.citationIeee Transactions On Signal Processing, 2010, v. 58 n. 4, p. 2218-2229en_HK
dc.identifier.issn1053-587Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/124730-
dc.description.abstractThis paper proposes a general framework to effectively estimate the unknown timing and channel parameters, as well as design efficient timing resynchronization algorithms for asynchronous amplify-and-forward (AF) cooperative communication systems. In order to obtain reliable timing and channel parameters, a least squares (LS) estimator is proposed for initial estimation and an iterative maximum-likelihood (ML) estimator is derived to refine the LS estimates. Furthermore, a timing and channel uncertainty analysis based on the CramrRao bounds (CRB) is presented to provide insights into the system uncertainties resulted from estimation. Using the parameter estimates and uncertainty information in our analysis, timing resynchronization algorithms that are robust to estimation errors are designed jointly at the relays and the destination. The proposed framework is developed for different AF systems with varying degrees of timing misalignment and channel uncertainties and is numerically shown to provide excellent performances that approach the synchronized case with perfect channel information. © 2006 IEEE.en_HK
dc.languageengen_HK
dc.publisherIEEE.en_HK
dc.relation.ispartofIEEE Transactions on Signal Processingen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsIEEE Transactions on Signal Processing. Copyright © IEEE.-
dc.rights©2010 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.subjectAmplify-and-forward (AF)en_HK
dc.subjectAsynchronousen_HK
dc.subjectChannel estimationen_HK
dc.subjectCramrRao bound (CRB)en_HK
dc.subjectRelayen_HK
dc.subjectResynchronizationen_HK
dc.titleTiming estimation and resynchronization for amplify-and-forward communication systemsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1053-587X&volume=58&issue=4&spage=2218&epage=2229&date=2010&atitle=Timing+estimation+and+re-synchronization+for+amplify-and-forward+communication+systems-
dc.identifier.emailWu, YC:ycwu@eee.hku.hken_HK
dc.identifier.emailChan, SC:scchan@eee.hku.hken_HK
dc.identifier.authorityWu, YC=rp00195en_HK
dc.identifier.authorityChan, SC=rp00094en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1109/TSP.2009.2039837en_HK
dc.identifier.scopuseid_2-s2.0-77949368060en_HK
dc.identifier.hkuros175301en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77949368060&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume58en_HK
dc.identifier.issue4en_HK
dc.identifier.spage2218en_HK
dc.identifier.epage2229en_HK
dc.identifier.isiWOS:000275370800024-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridLi, X=35743453000en_HK
dc.identifier.scopusauthoridXing, C=35184311300en_HK
dc.identifier.scopusauthoridWu, YC=7406894786en_HK
dc.identifier.scopusauthoridChan, SC=13310287100en_HK

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