産業用機器向け電力重畳型通信システムにおけるスイッチング電源雑音の軽減方式の提案

• 古賀 英嗣

  株式会社安川電機技術開発本部開発研究所 九州工業大学大学院情報工学研究院

• 長尾 勇平

  九州工業大学大学院情報工学研究院

• 黒崎 正行

  九州工業大学大学院情報工学研究院

• 尾知 博

  九州工業大学大学院情報工学研究院

書誌事項

タイトル別名

• Proposal of a Switching Power Supply Noise Mitigation Technique on Industrial Power Supply Overlaid Communication System

抄録

In this paper, we present a method of reducing the effect of switching noise generated from the switching power supply using a GaN (gallium nitride) device for controlling industrial equipment communication signal. We point out the noise power with its peak at the resonance frequency determined by the parasitic impedance and circuit constants. We propose a contorted communication timing where the guard interval of the communication signal and the switching noise are overlapping. Then, we propose to select the dedicated LLR (log-likelihood ratio) calculation instantaneously when the switching noise overlaps the guard interval of the communication signal in the proposed timing. Using the proposed contorted communication timing, we have improved the SNR (signal-to-noise ratio) vs BER (bit error rate) from 1.0×10^-1 to 2.5×10^-2 at the SNR of 20[dB]. In addition using the proposed LLR calculation method, the SNR vs BER is improved by more than 5 [dB] while the SNR vs PER(packet error ratio) is improved by 10[dB] at the SNR of 20[dB].

収録刊行物

• 信号処理

  信号処理 19 (2), 43-53, 2015

  信号処理学会

キーワード

• power line communication
• gallium nitride device
• OFDM
• switching-noise
• log-likelihood ratio

詳細情報

• CRID: 1390282679442294656
• NII論文ID: 130004849326
• DOI: 10.2299/jsp.19.43
• ISSN: 18801013
• ISSN: 13426230
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可