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A Novel Impulsive Noise Suppression and Data Recovery Method for ACO-OFDM-Based Hybrid PLC-VLC Systems

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Abstract

Hybrid Power Line Communication (PLC)—Visible Light Communication (VLC) (HPV) systems are emerging as a cost-effective and efficient solution to enable high-speed communication. However, the random connection of electrical devices to the power line introduces Impulsive Noise (IN) in the PLC channel, which significantly degrades the Bit Error Rate (BER) of HPV systems. Existing studies have primarily focused on mitigating IN by setting the IN signals to either zero or a threshold value after the PLC stage. While previous studies have progressed in reducing noise, they have neglected the critical aspect of restoring the corrupted information signal that leads to data loss and increased BER. This study offers a novel Asymmetrical Recovery Filter (ARF) method to address the IN problem in HPV systems using Asymmetrically-Clipped Optical Orthogonal Frequency Division Multiplexing (ACO-OFDM). The ARF method not only suppresses the IN but also recovers impulsively corrupted data without causing signal loss, significantly enhancing the overall system BER performance. By leveraging ACO-OFDM’s naturally occurring different forms of identical signals, the ARF method avoids additional bandwidth usage during recovery and achieves this with a low-computational algorithm. The ARF method’s robustness is demonstrated through extensive simulations in both IN-free and IN-contaminated scenarios, outperforming existing signal lossy IN suppression methods.

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Data Availability

The data that support the findings of this study are available from the corresponding author, upon reasonable request.

Code Availability

Code is available from the corresponding author, upon reasonable request.

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This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.

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Author Contributions All authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by M.R., A.R., and A.H.U. The first draft of the manuscript was written by M.R. and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

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Correspondence to Mete Ramazan.

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Ramazan, M., Rizaner, A. & Ulusoy, A.H. A Novel Impulsive Noise Suppression and Data Recovery Method for ACO-OFDM-Based Hybrid PLC-VLC Systems. Wireless Pers Commun 139, 2379–2407 (2024). https://doi.org/10.1007/s11277-024-11717-9

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