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• W2126663658 abstract "Orthogonal 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." @default.
• W2126663658 created "2016-06-24" @default.
• W2126663658 creator A5017183733 @default.
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• W2126663658 date "2012-05-01" @default.
• W2126663658 modified "2023-10-16" @default.
• W2126663658 title "OFDM Signal Detection in Doubly Selective Channels with Blockwise Whitening of Residual Intercarrier Interference and Noise" @default.
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• W2126663658 doi "https://doi.org/10.1109/jsac.2012.120503" @default.
• W2126663658 hasPublicationYear "2012" @default.
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