CAZACイコライザを用いたOFDMシステムの提案と性能評価

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: 2018/03/01

タイトル(英語): Performance Evaluation of OFDM Wireless Systems using CAZAC Equalization

著者名: 白戸　裕史（東京理科大学工学研究科電気工学専攻），石岡　諒汰（東京理科大学工学研究科電気工学専攻），村口　正弘（東京理科大学工学研究科電気工学専攻）

著者名(英語): Yushi Shirato (Department of Electrical Engineering, Graduate School of Engineering, Tokyo University of Science), Ryota Ishioka (Department of Electrical Engineering, Graduate School of Engineering, Tokyo University of Science), Masahiro Muraguchi (Depar

キーワード: 電力付加効率，OFDM，電力増幅器，CAZAC系列，Zadoff-Chu系列，PAPR　　Power Added Efficiency，Orthogonal Frequency Division Multiplexing，Power Amplifier，CAZAC Sequence，Zadoff-Chu sequence，Peak to Average Power Ratio

要約(英語): The authors propose the transmission system which uses the CAZAC equalizer in order to reduce the PAPR and enhance power added efficiency (PAE) of the transmitter PA. In this paper, we firstly show that the proposed CAZAC-OFDM signal have the same PAPR as single carrier signals theoretically, then we discuss about the spectrum design, the frame structure design and the synchronization issues assuming a WiFi-based wireless system in which the CAZAC equalizer is used. Finally, we show the effectiveness of the proposed CAZAC equalizer by computer simulations. It is confirmed that the proposed receiver performs well under both AWGN channels and fading channels. It is also demonstrated that the proposed CAZAC-OFDM shows much better BER than the conventional OFDM under the frequency selective fading channels. It may be caused by some kind of frequency diversity gain obtained inclusively in the CAZAC-OFDM.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.138 No.3 （2018） 特集：新たなセンサネットワーク社会を拓くIoT/M2M情報通信技術

本誌掲載ページ: 204-209 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/138/3/138_204/_article/-char/ja/