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In this paper, we propose a scheme to improve the performance of orthogonal frequency division multiplexing (OFDM) systems when operating in time varying channels. When the channel is time varying, the orthogonality among the subcarriers of a transmitted OFDM symbol is destroyed, causing intercarrier interference, and degrading the system performance. The proposed scheme aims to effectively reduce the effect of intercarrier interference. The advantages of the proposed scheme are shown via analysis and simulation.