Zero-Padded Symmetric Conjugate Technique for Intercarrier Interference Cancellation in MIMO-OFDM Systems

This paper proposes a zero-padded symmetric conjugate self-cancellation technique in Orthogonal Frequency Division Multiplexing (OFDM) systems by padding zero in between two consecutive symbols for mitigating Inter-Carrier Interference (ICI) caused by a frequency offset in MIMO systems. The proposed system is not limited to the real-value channels as required in applying ICI cancellation technique in Alamouticoded MIMO systems. The proposed system offers advantages of a symmetric conjugate cancellation scheme and MIMO systems such as efficiently mitigating ICI and enhancement of a diversity gain.