はたまさはる 秦 正 治 (Masaharu HATA) 自然科学研究科 産業創成工学専攻 教授 |
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はたまさはる 秦 正 治 (Masaharu HATA) 自然科学研究科 産業創成工学専攻 教授 |
研究略歴
| 1975年4月 | 電公社横須賀電気通信研究所入所 |
| 1992年7月 | NTT移動通信網㈱研究開発部転籍 |
| 1994～1996年 | 九大，長崎大工学部非常勤講師 |
| 1998～2001年 | 九州芸工大，電通大客員教授 |
| 2001年3月 | (株)NTT ドコモワイヤレス研究所退職 |
| 2001年4月 | 岡山大学 工学部教授就任 |
研究テーマ
研究業績
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[1] Masaharu Hata, Hitoshi Yoshino, Shigeru Tomisato, Toru Otsu, "Spectrum efficiency of cellular system using time division beam control scheme", Proc. of the 12th IST Summit on Mobile & Wireless Communications, IST Summit 2003, vol.1, pp.128-132, June 2003. [2] Masaharu Hata and Shigeru Tomisato, "A study on integration of mobile communication and TV broadcasting systems operating in UHF band", Proc. of the IEEE TENCON 2004, pp.549-552, Nov. 2004. [3] Masaharu Hata and Shigeru Tomisato, "Capacity degradation due to external interference in mobile communication systems", Proc. CD of the 14th IST Mobile & Wireless Communications Summit, IST Summit 2005, pp.PID73.1-73.5, June 2005. [4] Masaharu Hata, Narihiro Shiraishi, and Shigeru Tomisato, "Cellular CDMA system capacity in a service area with tapered traffic distribution", Proc. CD of the IEEE Wireless Communications & Networking Conference, WCNC 2006, pp.NET02.1.1-1.5, April 2006. [5] Akiko Kubo, Shigeru Tomisato, Masaharu Hata, and Hitoshi Yoshino, "Transmission performance evaluation for designing an OFDM transmitter that offers iterative peak reduction", IEICE Trans. Fundamentals, vol.E89-A, no.7, pp.1968-1971, July 2006. [6] Toshiyuki Matsuda, Shigeru Tomisato, Masaharu Hata, Hiromasa Fujii, and Junichiro Hagiwara, "Peak reduction improvement in iterative clipping and filtering with a graded band-limiting filter for OFDM transmission", IEICE Trans. Fundamentals, vol.E90-A, no.7, pp.1362-1365, July 2007. [7] Shigeru Tomisato, Masaharu Nishizaki, Masaharu Hata, Hiromasa Fujii, and Junichiro Hagiwara, "An iterative peak-power reduction method applicable to OFDM systems for broadband wireless communications", Proc. CD of the 16th IST Mobile & Wireless Communications Summit, IST Summit 2007, pp.P3.5.1-P3.5.5, July 2007. [8] Sousuke Tokunaga, Yoshitaka Kawakami, Kenichi Hashimoto, Shigeru Tomisato, Satoshi Denno, and Masaharu Hata, "Power saving effect of sensor collaborative beam forming for wireless ubiquitous network systems", Proc. CD of the 14th Asia-Pacific Conference on Communications, APCC 2008, 15-PM1-D, pp.1-5, Oct. 2008. [9] Rintaro Toba, Shigeru Tomisato, Masaharu Hata, Hiromasa Fujii, and Hitoshi Yoshino, "A two-stage generating method of peak power reduction signals for OFDM transmission", Proc. CD of the 5th IEEE VTS Asia Pacific Wireless Communication Symposium, APWCS 2008, pp.T14.3.1-T14.3.5, Aug. 2008. |
担当授業
リンク