Abstract
The Bit Error Rate (BER) caused by Inter Carrier Interference (ICI) increases greatly with the increase of frequency offset in Orthogonal Frequency Division Multiplexing (OFDM) systems. According to a typical OFDM signal model, this letter proves that the coefficient matrix of ICI is a unitary matrix whose inverse matrix is much easier to get, and then proposes a new ICI cancellation method with less computation complexity by sending typical pilot symbols. Compared with two existing ICI cancellation methods, self-cancellation and windowing cancellation, it is shown that the proposed algorithm can cancel ICI better and overcome the limitation of the two traditional methods.
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Xu, C., Zhang, X. & Song, W. Novel ICI cancellation algorithm in OFDM systems. J. of Electron.(China) 21, 78–82 (2004). https://doi.org/10.1007/BF02687801
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DOI: https://doi.org/10.1007/BF02687801