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dc.contributor.authorWang, Hai-weien_US
dc.contributor.authorLin, David W.en_US
dc.contributor.authorSang, Tzu-Hsienen_US
dc.date.accessioned2014-12-08T15:22:35Z-
dc.date.available2014-12-08T15:22:35Z-
dc.date.issued2012-05-01en_US
dc.identifier.issn0733-8716en_US
dc.identifier.urihttp://hdl.handle.net/11536/15987-
dc.description.abstractOrthogonal frequency-division multiplexing (OFDM) is a popular broadband wireless transmission technique, but its performance can suffer severely from the intercarrier interference (ICI) induced by fast channel variation arising from high-speed motion. Existing ICI countermeasures usually address a few dominant ICI terms only and treat the residual similar to white noise. We show that the residual ICI has high normalized autocorrelation and that this normalized autocorrelation is insensitive to the multipath channel profile as well as a variety of other system and channel conditions. Consequently, the residual ICI plus noise can be whitened in a nearly channel-independent manner, leading to significantly improved detection performance. Simulation results confirm the theoretical analysis. In particular, they show that the proposed technique can significantly lower the ICI-induced error floor in maximum-likelihood sequence estimation (MLSE) designed to address a few dominant ICI terms.en_US
dc.language.isoen_USen_US
dc.subjectDoppler spreaden_US
dc.subjectintercarrier interference (ICI)en_US
dc.subjectmaximum-likelihood sequence estimation (MLSE)en_US
dc.subjectorthogonal frequency-division multiplexing (OFDM)en_US
dc.subjecttime-varying channelsen_US
dc.titleOFDM Signal Detection in Doubly Selective Channels with Blockwise Whitening of Residual Intercarrier Interference and Noiseen_US
dc.typeArticleen_US
dc.identifier.journalIEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONSen_US
dc.citation.volume30en_US
dc.citation.issue4en_US
dc.citation.epage684en_US
dc.contributor.department電子工程學系及電子研究所zh_TW
dc.contributor.departmentDepartment of Electronics Engineering and Institute of Electronicsen_US
dc.identifier.wosnumberWOS:000303327100003-
dc.citation.woscount4-
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