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Mitigation of Periodic Impulsive Noise in OFDM-Based Power-Line Communications

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5 Author(s)
Ren, G. ; Department of ASIC & Systems, Institute of Microelectronics of Chinese Academy of Sciences, Beijing, China ; Qiao, S. ; Zhao, H. ; Li, C.
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This paper presents a novel approach to mitigate the periodic impulsive noise before the synchronization of the orthogonal frequency-division multiplexing (OFDM)-based power-line communications (PLC) system. The proposed algorithm is employed to detect the periodic impulsive noise and then suppresses the periodic impulsive noise with an adaptive infinite impulse response (IIR) notch filter before the synchronization of the system, finally compensating the distortion of received signals brought by the IIR notch filter. Subsequently, the periodic impulsive noise mitigation algorithm is simulated and implemented in the PLC receiver's physical layer. Finally, the proposed algorithm is verified in field-programmable gate array and tested in the indoor PLC network. The simulation and field trial results show that the proposed periodic impulsive noise mitigation technique is simple and effective for the narrowband OFDM-based PLC system, such as the application of automatic meter reading.

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Power Delivery, IEEE Transactions on  (Volume:28 ,  Issue: 2 )