Impulsive Noise Mitigation Scheme by Selective Remapping of Signal Points

Abstract

In the OFDM modulation, one of the problems is the impulsive noise that is added in the channel. All sub-carriers of OFDM symbols are influenced by the impulsive noise because the impulsive noise has wide frequency components. Therefore, it is necessary to remove the impulsive noise. The mitigation schemes of impulsive noise have been proposed. Conventional schemes can improve the reception characteristics under the case that low order modulations are used for sub-carrier modulation. However, conventional schemes cannot improve the reception characteristics under the case that high order modulation is used. In this paper, the proposed scheme using selective remapping of signal points is proposed. As the result of computer simulations, the proposed scheme can improve the reception characteristics in higher order modulation.