Iterative intercarrier interference reduction for mobile OFDM systems

For mobile applications of Orthogonal Frequency-Division Multiplexing (OFDM) systems, channel time-variations during one OFDM symbol interval results in the loss of orthogonality among subcarriers, and thus leading to intercarrier interference (ICI). This paper addresses the problem of ICI reduction for mobile OFDM systems. By rearranging the frequency-domain channel matrix, ICI can be effectively reduced by half at each iterative procedure. The advantages of the proposed scheme are shown through simulations.