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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...
Orthogonal frequency-division multiplexing (OFDM) is robust against frequency selective fading due to the increase of the symbol duration. However, for mobile applications, channel time-variations in one OFDM symbol introduce inter-carrier interference (ICI) which degrades the performance. This becomes more severe as mobile speed, carrier frequency or OFDM symbol duration increases. Therefore, the...
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