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All Technical Committee Conferences (Searched in: Recent 10 Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| RCS, AP (Joint) |
2024-11-13 14:55 |
Ishikawa | (Primary: On-site, Secondary: Online) |
[Invited Lecture]
Analog-Digital Hybrid Beamforming Technology for Ultra-High-Capacity Wireless Transmission in the Sub-THz Band Hirofumi Sasaki, Ken Hiraga, Honoka Ito, Doohwan Lee, Riichi Kudo (NTT), Ken Mishina, Daisuke Hisano, Akihiro Maruta (Osaka Univ.)  AP2024-142 RCS2024-155 |
The demand for wireless communications in mobile communications is increasing exponentially year by year, and the use of... [more] | AP2024-142 RCS2024-155 pp.38-43(AP), pp.14-19(RCS) |
| RCS, AP (Joint) |
2024-11-15 09:15 |
Ishikawa | (Primary: On-site, Secondary: Online) |
Study on the use of Bessel beams in the sub-THz band to improve received power Kosuke Suzuoki, Yasunori Yagi, Riich Kudo, Doohwan Lee (NTT) RCS2024-165 |
[more] | RCS2024-165 pp.69-73 |
| RCS | 2022-10-27 13:00 |
Ehime | Ehime University, and online (Primary: On-site, Secondary: Online) |
[Invited Lecture]
OAM Multiplexing and Its Extension to Multishape Radio Toward Future Wireless Communication Systems Doohwan Lee, Hirofumi Sasaki, Yasunori Yagi, Hiroyuki Shiba (NTT) RCS2022-133 |
[more] | RCS2022-133 p.26 |
| SRW | 2022-08-22 13:00 |
Online | Online | [Invited Talk]
Hybrid Analog and Digital Signal Processing for Wireless Transmission: From Orbital Angular Momentum Multiplexing to Multishape Radio Doohwan Lee (NTT) SRW2022-13 |
[more] | SRW2022-13 p.26 |
| RCS, NS (Joint) |
2021-12-16 13:50 |
Nara | Nara-ken Bunka Kaikan and Online (Primary: On-site, Secondary: Online) |
Issues of Sub-Terahertz-Band Radio Access Technologies for 6G Hayato Fukuzono (NTT), Satoshi Suyama (NTT DOCOMO), Doohwan Lee, Daisei Uchida (NTT), Tatsuki Okuyama (NTT DOCOMO), Masashi Iwabuchi, Jun Mashino (NTT), Yoshihisa Kishiyama (NTT DOCOMO) RCS2021-180 |
One of the requirements for the sixth generation mobile communication system (6G) is extreme high data rate and capacity... [more] | RCS2021-180 pp.30-34 |
| SRW, SeMI, CNR (Joint) |
2020-11-26 10:00 |
Online | Online | Blind compensation for wide-band single carrier systems with various frequency-dependent IQ imbalance in the presence of carrier frequency offset Hideki Mori, Tadao Nakagawa, Naoto Sasaoka (Tottori Univ.), Doohwan Lee (NTT) SRW2020-28 |
[more] | SRW2020-28 pp.19-24 |
| ED, THz [detail] | 2019-12-23 15:40 |
Miyagi | [Invited Talk]
Orbital Angular Momentum Multiplexing Technology
-- High Capacity Wireless Communication and Device Perspectives -- Doohwan Lee, Hirofumi Sasaki, Yasunori Yagi, Tomoki Semoto, Takayuki Yamada, Jun Mashino, Takashi Shimizu (NTT) ED2019-81 |
Recently, wireless communication using Orbital Angular Momentum (OAM) has drawn much attention as an emerging candidate ... [more] | ED2019-81 p.21 |
|
| RCS, SAT (Joint) |
2019-08-22 13:30 |
Aichi | Nagoya University | [Invited Lecture]
Orbital Angular Momentum Multiplexing Technology
-- High Capacity Point-to-Point Wireless Communication Perspective -- Doohwan Lee, Hirofumi Sasaki, Yasunori Yagi, Takayuki Yamada, Takashi Shimizu (NTT) SAT2019-25 RCS2019-154 |
Recently, wireless communication using Orbital Angular Momentum (OAM) has drawn much attention as an emerging candidate ... [more] | SAT2019-25 RCS2019-154 p.45 |
| SeMI, RCS, NS, SR, RCC (Joint) |
2019-07-11 10:40 |
Osaka | I-Site Nanba（Osaka） | [Poster Presentation]
An Experiment of 200 Gbps, 21 Streams Wireless Transmission Using OAM-MIMO Multiplexing with Polarization in 28 GHz Band Yasunori Yagi, Hirofumi Sasaki, Takayuki Yamada, Doohwan Lee, Takashi Shimizu (NTT) RCC2019-30 NS2019-66 RCS2019-123 SR2019-42 SeMI2019-39 |
The orbital angular momentum (OAM) multiplexing has been drawing much attention in wireless transmission systems. The OA... [more] | RCC2019-30 NS2019-66 RCS2019-123 SR2019-42 SeMI2019-39 pp.99-100(RCC), pp.125-126(NS), pp.121-122(RCS), pp.131-132(SR), pp.113-114(SeMI) |
| SRW | 2019-06-10 09:25 |
Kanagawa | Anritsu | Blind compensation for wide-band single carrier systems with various frequency-dependent IQ imbalance Hideki Mori, Tadao Nakagawa, Naoto Sasaoka (Tottori Univ.), Doohwan Lee (NTT) SRW2019-2 |
As the frequency bandwidth in wireless communications are wide, impairments of analog circuits of transceivers including... [more] | SRW2019-2 pp.7-11 |
| SR | 2019-05-31 10:30 |
Tokyo | Tokyo Big Sight | [Invited Talk]
Toward terabit-class wireless transmission: OAM wireless multiplexing technology Doohwan Lee, Hirofumi Sasaki, Yasunori Yagi, Takayuki Yamada, Takashi Shimizu (NTT) SR2019-11 |
[more] | SR2019-11 p.69 |
| RCS, SR, SRW (Joint) |
2019-03-08 11:20 |
Kanagawa | YRP | [Invited Lecture]
Experimental Investigation of OAM-MIMO multiplexing technique for ultra high capacity wireless transmission Hirofumi Sasaki, Yasunori Yagi, Yakana Kaho, Takayuki Yamada, Doohwan Lee, Takashi Shimizu (NTT) SR2018-140 |
Recently, communication systems using beams that carry orbital angular momentum (OAM) have gathered much attention for u... [more] | SR2018-140 pp.111-116 |
| SRW | 2019-01-15 13:25 |
Kanagawa | Mitsubishi Electric (Oofuna) | Blind frequency-dependent IQ imbalance compensation for single carrier systems Hideki Mori, Tadao Nakagawa, Naoto Sasaoka (Tottori Univ.), Doohwan Lee, Takana Kaho (NTT) SRW2018-50 |
As the frequency bandwidth in wireless communications is wide, impairments of analog circuits of transceivers including ... [more] | SRW2018-50 pp.25-29 |
| SR, RCS (Joint) (2nd) |
2018-10-31 15:00 |
Overseas | Mandarin Hotel, Bangkok, Thailand | [Invited Talk]
An Experiment of 100 Gbps Wireless Transmission Using OAM-MIMO Multiplexing in 28 GHz Doohwan Lee, Sasaki Hirofumi, Hiroyuki Fukumoto, Yasunori Yagi, Takana Kaho, Takashi Shimizu (NTT Corp.) |
[more] | |
| OPE, OCS, LQE | 2018-05-11 16:15 |
Tokyo | Kikai-Shinko-Kaikan Bldg (Tokyo) | [Special Invited Talk]
DMD-Unmanaged Long-Haul SDM Transmission Over 2500-km 12-core x 3-mode MC-FMF and 6300-km 3-mode FMF Employing Intermodal Interference Cancelling Technique Kohki Shibahara, Takayuki Mizuno, Doohwan Lee, Yutaka Miyamoto, Hirotaka Ono, Kazuhide Nakajima (NTT), Shota Saitoh, Katsuhiro Takenaga (Fujikura), Kunimasa Saitoh (Hokkaido Univ.) OCS2018-7 OPE2018-7 LQE2018-7 |
This talk provides an overview of advanced space division multiplexing (SDM) technologies that we have developed over th... [more] | OCS2018-7 OPE2018-7 LQE2018-7 pp.25-27 |
| RCS, SR, SRW (Joint) |
2018-03-02 11:45 |
Kanagawa | YRP | Blind frequency-dependent IQ imbalance compensation using constant norm algorithm for OFDM systems Ryoto Hamabe, Tadao Nakagawa (Tottori Univ.), Doohwan Lee, Takana Kaho (NTT) SRW2017-90 |
As the frequency bandwidth in wireless communications are wide, impairments of analog circuits of transceivers including... [more] | SRW2017-90 pp.105-108 |
| ED, MW | 2018-01-26 13:50 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | An experimental study on beam focusing effect using dielectric lens for OAM multiplexing Hiroyuki Fukumoto, Doohwan Lee, Hirofumi Sasaki, Takana Kaho, Hiroyuki Shiba (NTT) ED2017-103 MW2017-172 |
[more] | ED2017-103 MW2017-172 pp.53-57 |
| RCS, SAT (Joint) |
2017-08-18 10:30 |
Niigata | Niigata Univ. | [Invited Lecture]
Orbital Angular Momentum (OAM) Multiplexing as an Emerging Wireless Transmission Technology Doohwan Lee, Hirofumi Sasaki, Hiroyuki Fukumoto, Hiroyuki Shiba (NTT) SAT2017-32 RCS2017-162 |
Recently, wireless communication using Orbital Angular Momentum (OAM) has drawn much attention as an emerging candidate... [more] |
SAT2017-32 RCS2017-162 p.61(SAT), p.103(RCS) |
| SR | 2016-10-27 15:00 |
Osaka | Osaka Univ. Nakanoshima Center | [Technology Exhibit]
An Experimental Study of the Orbital Angular Momentum (OAM) Multiplexing Doohwan Lee, Hirofumi Sasaki, Hiroyuki Fukumoto, Ken Hiraga, Tadao Nakagawa, Hiroyuki Shiba (NTT) SR2016-56 |
Recently, wireless communication using Orbital Angular Momentum (OAM) has drawn much attention as an emerging candidate... [more] |
SR2016-56 pp.7-8 |
| SR | 2016-10-28 14:15 |
Osaka | Osaka Univ. Nakanoshima Center | Beam Propagation Control Method for OAM Multiplexing using Gaussian Beam Hirofumi Sasaki, Doohwan Lee, Hiroyuki Fukumoto, Tadao Nakagawa, Hiroyuki Shiba (NTT) SR2016-73 |
[more] | SR2016-73 pp.105-110 |
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