送電線用ディジタル電力線搬送における周波数オフセット補償方式

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2015/11/01

タイトル(英語): Carrier Frequency Offset Compensation Method for Digital Power Line Carrier Systems

著者名: 佐々木　範雄（東北電力（株）研究開発センター），花海　丞（通研電気工業（株）），織田　健志（通研電気工業（株）），安達　文幸（東北大学）

著者名(英語): Norio Sasaki (Tohoku Electric Power Co., Inc.), Tasuku Hanaumi (Tsuken Electric Industrial Co., Ltd.), Takeshi Oda (Tsuken Electric Industrial Co., Ltd.), Fumiyuki Adachi (Tohoku University)

キーワード: 送電線，電力線搬送，ディジタル伝送，周波数オフセット，適応等化器　　Power line transmission，Power line carrier，Digital transmission，Carrier frequency offset，Adaptive equalizer

要約(英語): The transmission performance of a digital power line carrier system with adaptive equalizer degrades in the presence of the carrier frequency offset (CFO). Therefore, accurate CFO estimation and compensation is necessary. In this paper, we propose a CFO estimation method suitable for a digital power line carrier system with adaptive equalizer in the presence of delayed propagation paths. The proposed CFO estimation method estimates the CFO from the measured phase rotation per symbol which is obtained by the measurement of autocorrelation of a 4PSK training sequence. By setting the time separation for autocorrelation measurement to the training sequence length, the accurate CFO estimation is achieved in the presence of delayed propagation paths. In order to achieve sufficiently accurate CFO estimation in a low SNR condition, averaging the instantaneous autocorrelation measurements is done by a simple first-order filter. It was confirmed by computer simulation that even in the presence of delayed propagation paths, by using the proposed CFO estimation method, a digital power line carrier system with adaptive equalizer achieves a BER performance close to the case of no CFO.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.135 No.11 （2015） 特集：電気関係学会関西連合大会

本誌掲載ページ: 1351-1360 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/ieejeiss/135/11/135_1351/_article/-char/ja/