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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| 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 |
| SRW | 2016-06-13 15:00 |
Kanagawa | NICT Wireless Network Research Institute (NICT) | Performance Evaluation of an Overhead-Reduced Channel Estimation Sequences for mmWave Short-Range MIMO Doohwan Lee, Ken Hiraga, Kazumitsu Sakamoto, Tadao Nakagawa (NTT) SRW2016-30 |
A promising solution to the need for higher rates in wireless data transmission is millimeter-wave (mmWave) short-range ... [more] | SRW2016-30 pp.27-32 |
| SR, SRW (Joint) |
2016-05-16 14:30 |
Overseas | Hotel Lasaretti, Oulu, Finland | [Poster Presentation]
A Study of Channel Estimation Sequences Design for Millimeter-Wave Short-Range MIMO Wireless Communication Systems Doohwan Lee, Ken Hiraga, Kazumitsu Sakamoto, Tadao Nakagawa (NTT) SR2016-6 SRW2016-6 |
Recently wireless data transmission using millimeter-wave has drawn much attention due to its wider bandwidth. To fully ... [more] | SR2016-6 SRW2016-6 pp.21-22 |
| SR, SRW (Joint) |
2016-05-17 14:00 |
Overseas | Hotel Lasaretti, Oulu, Finland | [Poster Presentation]
Toward Realization of a New Wireless Transmission Technology: Orbital Angular Momentum (OAM) Multiplexing Doohwan Lee, Hirofumi Sasaki, Hiroyuki Fukumoto, Tadao Nakagawa (NTT) SR2016-16 SRW2016-13 |
Recently, wireless communication using Orbital Angular Momentum (OAM) has drawn much attention as an emerging candidate ... [more] | SR2016-16 SRW2016-13 pp.57-58(SR), pp.45-46(SRW) |
| RCS, CCS, SR, SRW (Joint) |
2016-03-02 11:15 |
Tokyo | Tokyo Institute of Technology | An Overhead-Reducing Channel Estimation Sequences Design for Millimeter-Wave Short-Range MIMO Wireless Communication Systems Doohwan Lee, Ken Hiraga, Kazumitsu Sakamoto, Tadao Nakagawa (NTT) SRW2015-75 |
The number of necessary channel estimation sequences (CES) slots linearly increase as the number of transmission antenna... [more] | SRW2015-75 pp.29-34 |
| RCS, CCS, SR, SRW (Joint) |
2016-03-04 14:30 |
Tokyo | Tokyo Institute of Technology | [Invited Lecture]
Broadband Spectrum Sensing Platform based on Received Waveform Cross-correlation using Distributed Sensors Doohwan Lee, Takayuki Yamada, Hiroyuki Shiba, Yo Yamaguchi, Takana Kaho, Tadao Nakagawa, Kazuhiro Uehara (NTT) SR2015-117 |
Rapid increase in mobile traffic due to the spread of smartphones will cause the frequency shortage. Frequency range fro... [more] | SR2015-117 p.171 |
| SR | 2014-10-31 13:00 |
Overseas | I2R, Singapore | [Technology Exhibit]
Broadband Spectrum Sensing Platform Based on Received Waveform Cross-correlation using Distributed Sensors Takayuki Yamada, Doohwan Lee, Hiroyuki Shiba, Yo Yamaguchi, Takana Kaho, Tadao Nakagawa, Kazuhiro Uehara (NTT) SR2014-88 |
Rapid increase in mobile traffic due to the spread of smartphones will cause the frequency shortage. Frequency range fro... [more] | SR2014-88 pp.169-170 |
| SR, AN, USN, RCS (Joint) |
2012-10-18 16:50 |
Fukuoka | Fukuoka univ. | [Invited Talk]
Applications of Compressed Sensing in Wireless Communication Systems Doohwan Lee (Univ. of Tokyo) RCS2012-145 SR2012-65 AN2012-39 USN2012-42 |
Compressed sensing has been drawn explosive attention during last several years. It is a new framework that uses signal ... [more] | RCS2012-145 SR2012-65 AN2012-39 USN2012-42 p.121(RCS), p.179(SR), p.91(AN), p.85(USN) |
| SR | 2012-05-24 13:00 |
Kanagawa | Keio univ. at Hiyoshi | [Technology Exhibit]
Flexible Wireless System Prototype using 1-bit Compressed Sensing with Partial Random Circulant Measurement Matrices for User-centric Wireless Networks Takayuki Yamada, Doohwan Lee, Takana Kaho, Hiroyuki Shiba, Yo Yamaguchi, Kazunori Akabane, Kazuhiro Uehara (NTT) SR2012-10 |
This paper show the implementation of flexible wireless system (FWS) using compressed sensing (CS) for User-centric Wire... [more] | SR2012-10 pp.59-64 |
| RCS, AN, SR, USN (Joint) |
2011-10-26 16:30 |
Tokyo | Sophia Univ. | 1 bit compressed sensing using partial random circulant measurement matrix for Flexible Wireless System Doohwan Lee (NTT), Tatsuya Sasaki (Univ. of Tokyo), Takayuki Yamada, Kazunori Akabane, Hiroyuki Shiba, Takana Kaho, Yo Yamaguchi, Kazuhiro Uehara (NTT) RCS2011-155 SR2011-58 AN2011-33 USN2011-35 |
Compressed sensing has been drawn explosive attention during last several years. It has been proven that a signal which ... [more] | RCS2011-155 SR2011-58 AN2011-33 USN2011-35 pp.95-100(RCS), pp.97-102(SR), pp.77-82(AN), pp.77-82(USN) |
| SR | 2011-07-28 15:05 |
Kanagawa | YRP | [Technology Exhibit]
Compressed Sensing Technology for Flexible Wireless System Doohwan Lee, Takayuki Yamada, Takana Kaho, Hiroyuki Shiba, Yo Yamaguchi, Kazunori Akabane, Kazuhiro Uehara (NTT) SR2011-29 |
Flexible wireless system (FWS) is a unified wireless platform which simultaneously deals with various types of wireless ... [more] | SR2011-29 pp.75-80 |
| SR | 2011-07-29 13:00 |
Kanagawa | YRP | [Invited Talk]
Research and Development of Flexible Wireless System
-- Future wireless platform which can simultaneously deal with various types of wireless systems -- Kazunori Akabane, Doohwan Lee, Takayuki Yamada, Takana Kaho, Hiroyuki Shiba, Yo Yamaguchi, Kazuhiro Uehara (NTT) SR2011-40 |
[more] | SR2011-40 p.149 |
| RCS, MoNA, SR (Joint) |
2011-03-02 13:20 |
Kanagawa | YRP | An Intuitive Introduction to Compressed Sensing Doohwan Lee, Takayuki Yamada, Hiroyuki Shiba, Yo Yamaguchi, Kazuhiro Uehara (NTT Corp.) SR2010-89 |
Compressed sensing has been drawn explosive attention during last several years. It has been proven that a signal which ... [more] | SR2010-89 pp.9-16 |
| RCS, MoNA, SR (Joint) |
2011-03-03 13:40 |
Kanagawa | YRP | [Invited Talk]
Research and Development of Flexible Wireless System
-- Heterogeneous Network with which Users can freely choose a Radio Access System -- Kazuhiro Uehara, Yo Yamaguchi, Hiroyuki Shiba, Takana Kaho, Doohwan Lee, Takayuki Yamada (NTT) RCS2010-275 MoMuC2010-88 SR2010-102 |
A new unified wireless platform architecture“flexible wireless system”has been researching and developing for realizing ... [more] | RCS2010-275 MoMuC2010-88 SR2010-102 p.159(RCS), p.51(MoMuC), p.93(SR) |
| SR | 2011-01-27 13:00 |
Fukuoka | Kyushu Institute of Technology | Processing burden reduction of a large-scale data compression by employing averaged compressed sensing Doohwan Lee, Takayuki Yamada, Hiroyuki Shiba, Yo Yamaguchi, Kazuhiro Uehara (NTT) SR2010-69 |
Compressed sensing has been drawn much attention during last few years as an eminent solution for ill-posed inverse prob... [more] | SR2010-69 pp.1-6 |
| RCS, AN, MoNA, SR (Joint) |
2010-03-05 15:10 |
Kanagawa | YRP | A Heterogeneous Network System with Flexible Access Point and Protocol-free Signal Processing Part
-- Part1: System Architecture and RF Circuit Technology -- Yo Yamaguchi, Hiroyuki Shiba, Kazunori Akabane, Takayuki Yamada, Doohwan Lee, Takana Kaho, Kazuhiro Uehara (NTT Corp.) RCS2009-321 MoMuC2009-94 SR2009-118 AN2009-87 |
In these days, a great variety of wireless systems are being used and new wireless systems are being standardized for la... [more] | RCS2009-321 MoMuC2009-94 SR2009-118 AN2009-87 pp.373-378(RCS), pp.123-128(MoMuC), pp.183-188(SR), pp.111-116(AN) |
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