Enhanced PAPR and Impulsive Noise Reduction for Improved Performance in OFDM-based Power Line Communication

In this paper, we propose a new approach to minimize the Peak-to-Average Power Ratio (PAPR) which is considered as the main obstacle at the receiving end through the Orthogonal Frequency Division Multiplexing-based Power Line Communication (OFDM-PLC) channel. The proposed method is based on the combination of a modified selective mapping (MSLM) and a modified Partial transmit sequence (MPTS) with a novel clipping function (NCF) to design two new techniques namely, MSLM-NCF and MPTS-NCF, respectively. In this context, the MSLM introduces a novel phase factor depending on the diagonal coefficients of Riemann matrix while the MPTS uses a suboptimal combination algorithm that can effectively reduce the time complexity. In addition, the NCF process uses a novel strategy to clip the impulsive bursts. Consequently, the proposed techniques can efficiently mitigate both the impulsive noise (IN) and the PAPR generated over the OFDM-PLC channels. Performance evaluation of the proposed techniques is measured in terms of BER (bit error rate), MSE (mean square error), and CCDF (complementary cumulative distribution function) by using a well known PLC channel model. Obtained results are shown to be superior to the often referenced well-known methods in the literature.