Kazuo Kumamoto
Osaka University
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Publication
Featured researches published by Kazuo Kumamoto.
international topical meeting on microwave photonics | 2000
Kazuo Kumamoto; Katsutoshi Tsukamoto; Shozo Komaki
In this paper, we have analyzed theoretically the carrier-to-interference-power-ratio (CIR) of the regenerated RF signal in a fiber-optic-radio-highway with a direct optical switching-CDMA system considering the spectral aliasing distortions when the code period is longer than the bandpass sampling period.
international topical meeting on microwave photonics | 2014
Yuki Washino; Kazuo Kumamoto; Takao Mochii; Katsutoshi Tsukamoto
This paper proposes a new configuration of entrance link using millimeter-wave digital Radio on Radio and Radio on Fiber for small cell mobile access. By utilizing wideband property of millimeter-wave, RF signals such as cellular, WiFi and WiMAX can be digitalized and transferred to remote base station over digital Radio on Radio link. This paper shows the proposed system configuration and theoretical evaluations of the link design, and some experiment results in EVM and MER measurements for WiMAX and Digital TV signals transmitted over cascaded RoF and DRoF link. The influence of the sampling rate and quantization level at ADC are discussed.
IEICE Transactions on Communications | 2000
Kazuo Kumamoto; Katsutoshi Tsukamoto; Shozo Komaki
IEICE Transactions on Communications | 2001
Kazuo Kumamoto; Katsutoshi Tsukamoto; Shozo Komaki
C - Abstracts of IEICE TRANSACTIONS on Electronics (Japanese Edition) | 2008
Kazuo Kumamoto; Koji Yasukawa; Keizo Inagaki; Takeshi Higashino; Katsutoshi Tsukamoto; Shozo Komaki
Technical report of IEICE. RCS | 2014
Kazuo Kumamoto; Katsutoshi Tsukamoto
Proceedings of SPIE, the International Society for Optical Engineering | 2010
Kazuo Kumamoto; Hikaru Hoshino; Koji Yasukawa; Takeshi Higashino; Katsutoshi Tsukamoto; Shozo Komaki; Keizo Inagaki
電子情報通信学会論文誌. C, エレクトロニクス | 2008
武史 東野; 勝俊 塚本; 省三 小牧; 恵三 稲垣; 和夫 熊本; 交二 安川; タケシ ヒガシノ; カツトシ ツカモト; ショウゾウ コマキ; ケイゾウ イナガキ; カズオ クマモト; コウジ ヤスカワ; Takeshi Higashino; Katsutoshi Tsukamoto; Shozo Komaki; Keizo Inagaki; Kazuo Kumamoto; Koji Yasukawa
Proceedings of the Society Conference of IEICE | 2007
Kazuo Kumamoto; Koji Yasukawa; Keizo Inagaki; Takeshi Higashino; Katsutoshi Tsukamoto; Shozo Komaki
Archive | 2006
Keizo Inagaki; Shozo Komaki; Kazuo Kumamoto; Takeshi Tono; Katsutoshi Tsukamoto; Koji Yasukawa; 勝俊 塚本; 交二 安川; 省三 小牧; 武史 東野; 和夫 熊本; 惠三 稲垣
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National Institute of Information and Communications Technology
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