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Conference Paper: Joint channel estimation and data detection for OFDM systems over doubly selective channels

TitleJoint channel estimation and data detection for OFDM systems over doubly selective channels
Authors
KeywordsBasis expansion models
Bayesian
Channel estimator
Cramer rao lower bound
Data detection
Issue Date2009
PublisherIEEE. The Journal's web site is located at http://www.ieeexplore.ieee.org/xpl/conhome.jsp?punumber=1000550
Citation
The 20th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC 2009), Tokyo, Japan. 13-16 September 2009. In Proceedings of the 20th PIMRC, 2009, p. 446-450 How to Cite?
AbstractIn this paper, a joint channel estimation and data detection algorithm is proposed for OFDM systems under doubly selective channels (DSCs). After representing the DSC using Karhunen-Loève basis expansion model (K-L BEM), the proposed algorithm is developed based on the expectationmaximization (EM) algorithm. Basically, it is an iterative algorithm including two steps at each iteration. In the first step, the unknown coefficients in K-L BEM are first integrated out to obtain a function which only depends on data, and meanwhile, a maximum a posteriori (MAP) channel estimator is obtained. In the second step, data are directly detected by a novel approach based on the function obtained in the first step. Moreover, a Bayesian Cramer-Rao Lower Bound (BCRB) which is valid for any channel estimator is also derived to evaluate the performance of the proposed channel estimator. The effectiveness of the proposed algorithm is finally corroborated by simulation results. ©2009 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/126072
ISBN
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorHe, Len_HK
dc.contributor.authorMa, Sen_HK
dc.contributor.authorWu, YCen_HK
dc.contributor.authorNg, TSen_HK
dc.date.accessioned2010-10-31T12:08:17Z-
dc.date.available2010-10-31T12:08:17Z-
dc.date.issued2009en_HK
dc.identifier.citationThe 20th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC 2009), Tokyo, Japan. 13-16 September 2009. In Proceedings of the 20th PIMRC, 2009, p. 446-450en_HK
dc.identifier.isbn978-1-4244-5122-7-
dc.identifier.urihttp://hdl.handle.net/10722/126072-
dc.description.abstractIn this paper, a joint channel estimation and data detection algorithm is proposed for OFDM systems under doubly selective channels (DSCs). After representing the DSC using Karhunen-Loève basis expansion model (K-L BEM), the proposed algorithm is developed based on the expectationmaximization (EM) algorithm. Basically, it is an iterative algorithm including two steps at each iteration. In the first step, the unknown coefficients in K-L BEM are first integrated out to obtain a function which only depends on data, and meanwhile, a maximum a posteriori (MAP) channel estimator is obtained. In the second step, data are directly detected by a novel approach based on the function obtained in the first step. Moreover, a Bayesian Cramer-Rao Lower Bound (BCRB) which is valid for any channel estimator is also derived to evaluate the performance of the proposed channel estimator. The effectiveness of the proposed algorithm is finally corroborated by simulation results. ©2009 IEEE.en_HK
dc.languageengen_HK
dc.publisherIEEE. The Journal's web site is located at http://www.ieeexplore.ieee.org/xpl/conhome.jsp?punumber=1000550-
dc.relation.ispartofIEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRCen_HK
dc.rightsIEEE International Symposium on Personal, Indoor and Mobile Radio Communications. Copyright © IEEE.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rights©2009 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.subjectBasis expansion models-
dc.subjectBayesian-
dc.subjectChannel estimator-
dc.subjectCramer rao lower bound-
dc.subjectData detection-
dc.titleJoint channel estimation and data detection for OFDM systems over doubly selective channelsen_HK
dc.typeConference_Paperen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=978-1-4244-5122-7&volume=&spage=446&epage=450 &date=2009&atitle=Joint+channel+estimation+and+data+detection+for+OFDM+systems+over+doubly+selective+channels-
dc.identifier.emailMa, S: sdma@eee.hku.hken_HK
dc.identifier.emailWu, YC: ycwu@hkucc.hku.hken_HK
dc.identifier.emailNg, TS: tsng@eee.hku.hken_HK
dc.identifier.authorityMa, S=rp00153en_HK
dc.identifier.authorityWu, YC=rp00195en_HK
dc.identifier.authorityNg, TS=rp00159en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1109/PIMRC.2009.5449795en_HK
dc.identifier.scopuseid_2-s2.0-77952866898en_HK
dc.identifier.hkuros180563en_HK
dc.identifier.hkuros160164-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77952866898&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.spage446-
dc.identifier.epage450-
dc.identifier.isiWOS:000305824600090-
dc.description.otherThe 20th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC 2009), Tokyo, Japan. 13-16 September 2009. In Proceedings of the 20th PIMRC, 2009, p. 446-450-
dc.identifier.scopusauthoridHe, L=36084228000en_HK
dc.identifier.scopusauthoridMa, S=8553949000en_HK
dc.identifier.scopusauthoridWu, YC=7406894786en_HK
dc.identifier.scopusauthoridNg, TS=7402229975en_HK

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