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New method for ICI cancellation in MIMO-OFDM systems based on the ICI matrix properties

A new method is proposed to reduce the inter-carrier interference (ICI) in OFDM systems due to carrier frequency mismatch. The novel approach is based on a new interpretation of ICI on the basis of the properties of a time-varying ICI matrix and the use of pilot symbols transmitted through one of the antennas of the MIMO system