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ICI Cancellation for OFDM Systems in Rapidly Time-Variant Channels

Ali Ramadan ALI, Tariq J. KHANZADA, Abbas OMAR

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Summary :

Time-variant channels degrade the performance of Orthogonal Frequency Division Multiplexing (OFDM) systems because they collapse the orthogonality between the sub-carriers, which necessitates estimating the resulting off-diagonals of the channel matrix in order to properly equalize the received signal. This letter presents a new method of estimating the channel matrix for OFDM systems in rapidly time-variant channels. The method approximates the time variation of the channel over a few successive OFDM symbols making use of Newton polynomial interpolation.

Publication
IEICE TRANSACTIONS on Communications Vol.E92-B No.4 pp.1388-1391
Publication Date
2009/04/01
Publicized
Online ISSN
1745-1345
DOI
10.1587/transcom.E92.B.1388
Type of Manuscript
LETTER
Category
Wireless Communication Technologies

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