OFDM信号伝送時の送信電力付加効率と受信S/Nを改善する分離送信法の特性評価

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: 2016/03/01

タイトル(英語): Evaluation Results of the Signal Decomposition Technique for OFDM Transmission which Achieves the Power Added Efficiency Improvement and the SNR Enhancement Using the Noise Elimination

著者名: 白戸　裕史（東京理科大学工学研究科電気工学専攻），亀田　博文（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), Hirofumi Kameda (Department of Electrical Engineering, Graduate School of Engineering, Tokyo University of Science), Masahiro Muraguchi (Department of Electrical Engineering, Graduate School of Engineering, Tokyo University of Science)

キーワード: 電力付加効率，OFDM，電力増幅器，MIMO　　Power Added Efficiency，Orthogonal Frequency Division Multiplexing，Power Amplifier，Multiple Input Multiple Output

要約(英語): The authors have proposed the signal decomposition technique as one of the powerful solution to mitigate the large PAPR to be addressed in OFDM transmitters especially on mobile terminals. In order to enhance the receiver SNR, the simple noise elimination techniques working together with the signal decomposition technique have also been proposed, that eliminates the noise added on the decomposed constant amplitude on-off-signals taking advantage of the knowledge of their constant amplitude at the receiver. In this paper, we discuss the parameter design issue of the proposed techniques and their optimization. Then, demonstrate the PAPR, the PAE and also the BER performances operating on the optimized parameters. It is confirmed that the proposed signal decomposition technique improves the PAPR by 4dB and doubles the PAE at the CCDF (Complementary Cumulative Distribution Function) of 1%. It is also confirmed that the proposed noise elimination technique improves the receiver SNR by 3dB at the BER of 10-3, which is nearly equal to that of conventional OFDM, under the conditions that the decomposed signals are transmitted over the independent AWGN channels. Furthermore, it is demonstrated that the proposed techniques work properly when the decomposed signals are transmitted over 2×2 MIMO.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.136 No.3 （2016） 特集：機械学習が拓くシステムイノベーション

本誌掲載ページ: 373-382 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/136/3/136_373/_article/-char/ja/