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Article: Channel estimation and data detection for OFDM systems over fast-fading and dispersive channels

TitleChannel estimation and data detection for OFDM systems over fast-fading and dispersive channels
Authors
KeywordsChannel Estimation
Intercarrier Interference (Ici)
Orthogonal Frequency-Division Multiplexing (Ofdm)
Polynomial
Issue Date2010
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, 2010, v. 59 n. 3, p. 1381-1392 How to Cite?
AbstractThe Doppler shift of fast-fading channels will generate intercarrier interference (ICI) and, hence, degrade the performance of orthogonal frequency-division multiplexing (OFDM) systems. In this paper, a novel channel-estimation and data-detection method for OFDM systems over the fast-fading dispersive channels has been proposed and investigated. A new pilot pattern is also proposed, and it is composed of a comb-type pilot pattern and a grouped pilot pattern. The required number of pilot subcarriers is, therefore, significantly reduced compared with that of using the grouped pilot pattern only. We present the MSE analysis of the proposed channel estimation based on the proposed pilot pattern and thoroughly investigate the MSE performance of channel estimation by a numerical method. A closed-form mathematical expression has been derived to express the MSE of the proposed channel estimation as a function of the Doppler shift, the number of resolvable paths of the channel, the polynomial order, and so on. Both computer simulation and numerical results show that the proposed channel estimation and data detection based on the proposed pilot pattern have effectively eliminated the ICI in terms of the MSE of the channel estimation and bit-error-rate (BER) performance, whereas the required pilot number per OFDM symbol is reduced by about 92.3% in comparison with that of using the grouped and equispaced pilot pattern. © 2006 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/155559
ISSN
2015 Impact Factor: 2.243
2015 SCImago Journal Rankings: 1.203
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorZhou, Wen_US
dc.contributor.authorLam, WHen_US
dc.date.accessioned2012-08-08T08:34:06Z-
dc.date.available2012-08-08T08:34:06Z-
dc.date.issued2010en_US
dc.identifier.citationIeee Transactions On Vehicular Technology, 2010, v. 59 n. 3, p. 1381-1392en_US
dc.identifier.issn0018-9545en_US
dc.identifier.urihttp://hdl.handle.net/10722/155559-
dc.description.abstractThe Doppler shift of fast-fading channels will generate intercarrier interference (ICI) and, hence, degrade the performance of orthogonal frequency-division multiplexing (OFDM) systems. In this paper, a novel channel-estimation and data-detection method for OFDM systems over the fast-fading dispersive channels has been proposed and investigated. A new pilot pattern is also proposed, and it is composed of a comb-type pilot pattern and a grouped pilot pattern. The required number of pilot subcarriers is, therefore, significantly reduced compared with that of using the grouped pilot pattern only. We present the MSE analysis of the proposed channel estimation based on the proposed pilot pattern and thoroughly investigate the MSE performance of channel estimation by a numerical method. A closed-form mathematical expression has been derived to express the MSE of the proposed channel estimation as a function of the Doppler shift, the number of resolvable paths of the channel, the polynomial order, and so on. Both computer simulation and numerical results show that the proposed channel estimation and data detection based on the proposed pilot pattern have effectively eliminated the ICI in terms of the MSE of the channel estimation and bit-error-rate (BER) performance, whereas the required pilot number per OFDM symbol is reduced by about 92.3% in comparison with that of using the grouped and equispaced pilot pattern. © 2006 IEEE.en_US
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_US
dc.relation.ispartofIEEE Transactions on Vehicular Technologyen_US
dc.subjectChannel Estimationen_US
dc.subjectIntercarrier Interference (Ici)en_US
dc.subjectOrthogonal Frequency-Division Multiplexing (Ofdm)en_US
dc.subjectPolynomialen_US
dc.titleChannel estimation and data detection for OFDM systems over fast-fading and dispersive channelsen_US
dc.typeArticleen_US
dc.identifier.emailLam, WH:whlam@eee.hku.hken_US
dc.identifier.authorityLam, WH=rp00136en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1109/TVT.2009.2037639en_US
dc.identifier.scopuseid_2-s2.0-77949678930en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77949678930&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume59en_US
dc.identifier.issue3en_US
dc.identifier.spage1381en_US
dc.identifier.epage1392en_US
dc.identifier.isiWOS:000275659600031-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridZhou, W=35312980700en_US
dc.identifier.scopusauthoridLam, WH=7203021916en_US

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