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    Multiple blanking preprocessors for impulsive noise mitigation in OFDM-based power-line communication systems

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    Authors
    Liong, A.A.G.
    Juwono, Filbert Hilman
    Gopal, Lenin
    Chiong, C.W.R.
    Rong, Yue
    Date
    2021
    Type
    Journal Article
    
    Metadata
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    Citation
    Liong, A.A.G. and Juwono, F.H. and Gopal, L. and Chiong, C.W.R. and Rong, Y. 2021. Multiple blanking preprocessors for impulsive noise mitigation in OFDM-based power-line communication systems. International Journal of Electrical Power and Energy Systems. 130: Article No. 106911.
    Source Title
    International Journal of Electrical Power and Energy Systems
    DOI
    10.1016/j.ijepes.2021.106911
    ISSN
    0142-0615
    Faculty
    Global Curtin
    Faculty of Science and Engineering
    School
    Global Curtin
    School of Elec Eng, Comp and Math Sci (EECMS)
    URI
    http://hdl.handle.net/20.500.11937/88924
    Collection
    • Curtin Research Publications
    Abstract

    Power-line communication (PLC) technology has been a critical enabler for smart grid systems. It provides two-way communication links without new infrastructure deployment. However, as the power-line was not designed to carry data, there are many drawbacks when it is used as a communication channel. One of the major drawbacks is impulsive noise occurrence. Blanking nonlinear preprocessor has been commonly used for mitigating impulsive noise in orthogonal frequency-division multiplexing (OFDM)-based PLC. It uses a threshold to detect whether a signal sample is contaminated by impulsive noise. Optimum performance is obtained when the optimal blanking threshold is used. The optimal blanking threshold depends on noise parameters, which are usually assumed to be available to the receiver. However, they may not be known in practice. In this paper, we propose a blanking preprocessor bank consisting of multiple blanking preprocessors with different thresholds which blindly handles the impulsive noise. Each blanking preprocessor is considered to provide an independent channel. The output of all preprocessors is combined using the maximal ratio combining (MRC) technique at the OFDM demodulator. Simulation results show that the proposed blanking preprocessor bank method results in better performance compared to the one using the optimal threshold method.

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      © 2016 IEEE. To mitigate the impulsive noise in orthogonal frequency-division multiplexing (OFDM)-based power-line communications (PLC), a blanker can be employed at the receiver. In the literature, the performance of the ...
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