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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| EMCJ, WPT (Joint) |
2014-01-30 10:05 |
Saga | Saga Univ. | Damages and Mitigations in Telecommunication Access Installations against Lightning Toshio Ito, Naomichi Nakamura, Shigemi Kikuchi, Yasunori Ogura, Kazuo Murakawa (NTT East), Hironori Makino (NTT Field Techno), Mototsugu Yamazaki (NTT Facilities), Hitomi Horii, Tatsuya Maeda, Kazuya Sawada, Kazuhisa Imamura (NTT Field Techno)  EMCJ2013-111 |
In recent years, a lightning that directly strikes high-rise buildings and structures such as wind turbines or antenna t... [more] | EMCJ2013-111 pp.1-6 |
| EMCJ | 2013-09-13 10:35 |
Hokkaido | Hokkaido Univ. | A study on electromagnetic interference to telecommunication equipment due to WiFi radio waves Norihito Hirasawa, Ken Okamoto, Hidenori Itou, Masashi Takahashi (NTT East), Yuichiro Okugawa, Yoshiharu Akiyama (NTT), Kazuo Murakawa (NTT East) EMCJ2013-49 |
Wireless communication services can be used at various places by development of wireless communication technologies. To ... [more] | EMCJ2013-49 pp.1-5 |
| EMCJ, EMD | 2013-07-12 15:25 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Analysis of high-frequency components in electrostatic discharge events
-- Assessing the effect of discharge electrode material and relative humidity -- Masao Masugi (Ritsumeikan Univ.), Yuichiro Okugawa, Yoshiharu Akiyama (NTT), Kazuo Murakawa (NTT East) EMCJ2013-47 EMD2013-32 |
This report describes evaluations of electrostatic discharge (ESD) events from electromagnetic interference (EMI) aspect... [more] | EMCJ2013-47 EMD2013-32 pp.43-46 |
| EMCJ (2nd) |
2012-11-30 16:05 |
Tokyo | NICT | Experimental Studies of separation between telecom signal and noise of common mode noise Kazuo Murakawa, Yasunori Ogura, Kei Tominaga, Yuichiro Okugawa, Hideki Itou (NTT EAST) |
[more] | |
| EMCJ (2nd) |
2012-11-30 16:25 |
Tokyo | NICT | Study for the operational guideline of wireless applications' use in telecommunication equipment rooms Kimihiro Tajima (NTT), Hidenori Itou, Norihito Hirasawa (NTT East), Yuichiro Okugawa, Yoshiharu Akiyama (NTT), Kazuo Murakawa (NTT East) |
[more] | |
| EMCJ | 2012-09-07 14:35 |
Hokkaido | Hkkaido Univ. | Experimental Studies of separation between telecom signal and noise of common mode noise Yasunori Ogura, Kei Tominaga (NTT EAST), Yuichiro Okugawa (NTT), Hidenori Itou, Kazuo Murakawa (NTT EAST) EMCJ2012-58 |
[more] | EMCJ2012-58 pp.35-40 |
| EMCJ, EMD | 2012-07-20 15:55 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Energy-based analysis of electrostatic discharge current
-- Assessment of high oscillations in ESD waveform -- Masao Masugi (Ritsumeikan Univ.), Norihito Hirasawa, Yoshiharu Akiyama (NTT), Kazuo Murakawa (NTT east) EMCJ2012-48 EMD2012-23 |
This report describes evaluations of electrostatic discharge (ESD) events from electromagnetic interference (EMI) aspect... [more] | EMCJ2012-48 EMD2012-23 pp.43-46 |
| EMCJ | 2012-01-27 10:50 |
Fukuoka | Kyushu Univ. | A study of detection technique of propagation direction for conductive disturbance waves Yuichiro Okugawa, Kenichi Takahashi, Hidenori Itou, Kazuo Murakawa (NTT East Corp.) EMCJ2011-116 |
When telecommunication malfunctions occurred by conductive disturbance waves, the best solutions are to specify and remo... [more] | EMCJ2011-116 pp.31-36 |
| EMCJ | 2011-11-25 15:15 |
Tokyo | Univ. of Electro-Communiations | Resent malfunctions and mitigations of telecommunication installations Kazuo Murakawa, Kei Tominaga, Yuichiro Okugawa, Yasunori Ogura, Hidenori Itou (NTT EAST) EMCJ2011-93 |
Recently, more than 70% malfunctions (noise sound on telephone sets, link dropping on ADSL modem etc) are occurred at cu... [more] | EMCJ2011-93 pp.31-36 |
| EMCJ, IEE-EMC | 2011-10-28 11:00 |
Aomori | Hachinohe Grand Hotel | Resent malfunctions of telecommunication installations and mitigations Kazuo Murakawa, Yasunori Ogura, Hidenori Itou, Kazuhiro Takaya, Hironori Makino (NTT EAST) EMCJ2011-82 |
[more] | EMCJ2011-82 pp.5-10 |
| EMCJ, MW, EST | 2011-05-27 09:55 |
Tokyo | NICT | Frequency analysis for power line conduction noise based on Linea prediction Code (LPC) Kazuo Murakawa (NTT East) EMCJ2011-24 MW2011-21 EST2011-17 |
[more] | EMCJ2011-24 MW2011-21 EST2011-17 pp.87-92 |
| EMCJ (2nd) |
2010-05-28 15:00 |
Miyagi | Cyberscience Center, Tohoku University | Lightning surge test for internal port of broadband telecommunication installation Kazuo Murakawa, Hironori Makino (NTT East Corp.), Shoichi Kuramoto (NTT E&E Labs.) |
[more] | |
| EMCJ | 2010-04-23 10:00 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Investigation of lightning current on inter-connection cable between telecommunications equipment for FTTH service Toshihisa Masuda, Kazuaki Yano, Shouichi Kuramoto (NTT), Shigemi Kikuchi, Mototsugu Yamazaki, Hironori Makino, Kazuo Murakawa (NTT-East) EMCJ2010-2 |
In recent years, since metal cables are replacing to optical fiber cables to provide broadband telecommunication service... [more] | EMCJ2010-2 pp.7-12 |
| EMCJ | 2010-01-21 11:00 |
Okinawa | University of the Ryukyus | A Study on Immunity Requirements for Ethernet Ports of Telecommunication Equipments in Customer Premises Yuichiro Okugawa, Masakatsu Ogawa, Kentaro Mokushi, Kazuhiro Takaya, Kazuo Murakawa (NTT East Corp.) EMCJ2009-101 |
Immunity test methods for electronics equipments are specified in IEC 61000 series. Especially, the immunity requirement... [more] | EMCJ2009-101 pp.19-24 |
| EMCJ | 2010-01-21 11:25 |
Okinawa | University of the Ryukyus | Study on the influence of the premises cable between VTR-O and VTU-R on the immunity of VDSL Systems Kentaro Mokushi, Yuuchiro Okugawa, Masakatsu Ogawa, Kazuhiro Takaya, Kazuo Murakawa (NTT East Corp.) EMCJ2009-102 |
[more] | EMCJ2009-102 pp.25-30 |
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