Linear combining of nonlinear preprocessors for OFDM-based power-line communications

Filbert H. Juwono, Qinghua Guo, Yifan Chen, Lu Xu, Defeng David Huang, Kit Po Wong

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)


Nonlinear preprocessors, including conventional clipping, blanking, joint blanking/clipping, and deep clipping, have been employed to mitigate the impulsive noise in orthogonal frequency division multiplexing-based power-line communications. Those nonlinear preprocessors are characterized by one or two thresholds, which are optimized to achieve an optimum output signal-to-noise ratio (SNR). In this paper, we aim to further improve the output SNR by linearly combining two nonlinear preprocessors. Both analytical and simulation results show that the proposed method yields better output SNR and symbol/bit error rate performance than the individual ones.

Original languageEnglish
Article number7052382
Pages (from-to)253-260
Number of pages8
JournalIEEE Transactions on Smart Grid
Issue number1
Publication statusPublished - Jan 2016
Externally publishedYes


  • Impulsive noise
  • Linear combining
  • Nonlinear preprocessor
  • Power-line communications (PLC)


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