直交復調およびPIアルゴリズムを用いたAM変調信号混入ノイズ抑圧システム

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2016/06/01

タイトル(英語): Noise Suppression System for AM Signal using Quadrature Demodulation and PI Algorithm

著者名: 伊藤　真也（福井大学大学院工学研究科），藤元　美俊（福井大学大学院工学研究科），堀　俊和（福井大学大学院工学研究科），原田　知育（（株）豊田中央研究所），服部　佳晋（（株）豊田中央研究所）

著者名(英語): Shinya Ito (Graduate school of Engineering, University of Fukui), Mitoshi Fujimoto (Graduate school of Engineering, University of Fukui), Toshikazu Hori (Graduate school of Engineering, University of Fukui), Tomohisa Harada (Toyota Central R&D Labs.), Yoshiyuki Hattori (Toyota Central R&D Labs.)

キーワード: ノイズキャンセラ，AM変調信号，直交復調，PIアルゴリズム　　noise canceller，AM signal，quadrature demodulation，power inversion algorithm

要約(英語): In recent years, a problem of interfering by artificial noises from a electrical power transfer become large and deterioration of a sound quality of an AM radio is worried. In this paper, a noise suppression system using quadrature demodulation techniques is proposed to reduce the effect of the interfering. The proposed system utilizes a fact that the quadrature signal includes only the interference, while the in-phase signal from the demodulator includes both of AM signal and interference. To cancel the noise component in the in-phase signal, the noise component in the quadrature signal is adjusted by a tapped delay line because the sign of the both interference is different each other. Weight coefficients of the tapped delay line are determined based on power inversion (PI) algorithm. Thus, the interference in the in-phase signal can be canceled by the quadrature signal. Validity of the proposed system is shown through computer simulations.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.136 No.6 （2016） 特集：広帯域電磁界の電子機器および通信に対する障害

本誌掲載ページ: 330-335 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/136/6/136_330/_article/-char/ja/