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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| NLP, CAS | 2023-10-06 13:40 |
Gifu | Work plaza Gifu | A Proposal for Design Method of Directivity with Specified Error Tsukasa Hidaka, Kenji Suyama (Tokyo Denki Univ.)  CAS2023-39 NLP2023-38 |
As a method for forming the desired directivity, we propose a method based on multiplication of the outputs of multiple ... [more] | CAS2023-39 NLP2023-38 pp.37-42 |
| AP | 2023-04-14 15:20 |
Osaka | Osaka Univ. (Primary: On-site, Secondary: Online) |
[Tutorial Lecture]
Underdetermined Direction-Of-Arrival Estimation by Sparse Arrays
-- Array Configuration Optimization for Enhancing Degree of Freedom -- Koichi Ichige (Yokohama National Univ.) AP2023-7 |
This paper introduces various sparse array configurations, and shows that underdetermined (more number of sources than t... [more] | AP2023-7 pp.34-39 |
| IT, RCS, SIP | 2023-01-24 16:20 |
Gunma | Maebashi Terrsa (Primary: On-site, Secondary: Online) |
Underdetermined DOA Estimation of Correlated Signals Using Atomic Norm Minimization Soichi Obata, Steven Wandale, Koichi Ichige (Yokohama Nat'l Univ.) IT2022-50 SIP2022-101 RCS2022-229 |
This paper discusses the underdetermined Direction-of-Arrival (DOA) estimation of correlated sources where the number of... [more] | IT2022-50 SIP2022-101 RCS2022-229 pp.120-125 |
| AP | 2022-10-19 09:30 |
Gifu | GIFU CITY CULTURE CENTER (Primary: On-site, Secondary: Online) |
[Poster Presentation]
Evaluation by Simulation of RSSI-Based Direction of Arrival Estimation of Incoherent Waves by Non-Uniform Array Using Hybrid Circuit Takashi Katsumata, Naoki Honma, Kentaro Murata (Iwate Univ.) AP2022-107 |
This paper proposes a method of estimating the direction of arrival of multiple waves using only RSSI (Received Signal S... [more] | AP2022-107 pp.59-64 |
| RCS | 2019-10-25 14:35 |
Kanagawa | Yokosuka Research Park | [Invited Lecture]
M-QAM Adaptation by Semi-Blind Multi Modulus Algorithm and MMSE-SMI for Multicell Massive MIMO Systems Kazuki Maruta, Chang-Jun Ahn (Chiba Univ.) RCS2019-199 |
This paper expands our previously proposed semi-blind uplink interference suppression scheme on multicell multiuser mass... [more] | RCS2019-199 pp.115-120 |
| SeMI, RCS, NS, SR, RCC (Joint) |
2019-07-10 13:25 |
Osaka | I-Site Nanba（Osaka） | Impact of Misalignment of Beam Axis on System Capacity in OAM Multiplexing with Multiple UCAs Yuki Ito, Shuhei Saito, Hirofumi Suganuma (Waseda Univ.), Kayo Ogawa (Japan Women's Univ.), Fumiaki Maehara (Waseda Univ.) RCS2019-101 |
In uniform circular array-based orbital angular momentum (UCA-based OAM), the adoption of multiple UCAs is effective bec... [more] | RCS2019-101 pp.1-6 |
| WPT | 2019-03-07 16:40 |
Kyoto | Kyoto Univ. Uji Campus | Design of Dual-frequency Metasurface Using Particle Swarm Optimization Takuto Osawa, Airi Yamamoto, Tamami Maruyama (HIT,Hakodate college), Manabu Omiya (Hokkaido Univ.), Noriharu Suematsu, Hiroyasu Satoh (Tohoku Univ.) WPT2018-80 |
This paper proposes a novel dual frequency reflectarray whose elements have not only the desired reflection phases but a... [more] | WPT2018-80 pp.83-88 |
| ASN, SRW (Joint) |
2018-11-05 13:00 |
Tokyo | Tokyo Denki University, Tokyo Senju Campus | [Poster Presentation]
Impact of the Number of Uniform Circular Arrays on System Capacity in OAM Multiplexing Shuhei Saito, Hirofumi Suganuma (Waseda Univ.), Kayo Ogawa (Japan Women's Univ.), Fumiaki Maehara (Waseda Univ.) ASN2018-66 SRW2018-31 |
In UCA-based OAM, the spatial phase and intensity distribution of the transmit OAM signals change significantly dependin... [more] | ASN2018-66 SRW2018-31 pp.69-70(ASN), pp.45-46(SRW) |
| SR | 2018-10-31 13:25 |
Overseas | Mandarin Hotel, Bangkok, Thailand | [Poster Presentation]
On Beam-Pattern and Nulls toward Interferences in Multiuser MIMO Using Null-Space Extension Hironori Ban, Makoto Taromaru, Mai Ohta (Fukuoka Univ.) SR2018-86 |
Multi-user massive MIMO (MU-MIMO) is one of the key technologies for the 5th generation mobile communication system(5G).... [more] | SR2018-86 pp.71-72 |
| RCS | 2018-06-20 15:00 |
Nagasaki | Nagasaki University | Relationship between Interference-Wave Suppression Using Null-Space Extension in Multiuser MIMO and formed Beam-Pattern Hironori Ban, Makoto Taromaru, Mai Ohta (Fukuoka Univ.) RCS2018-43 |
Some papers reported that a zero-forcing (ZF) adaptive array antenna or multi-user MIMO system at basestations can be r... [more] |
RCS2018-43 pp.49-54 |
| CQ | 2018-05-31 16:40 |
Chiba | Chiba Univ. Nishi-Chiba Campus, academic link center | [Invited Talk]
Blind Interference Suppression on Adaptive Arrays: Comparisons and Applications for Spectrum Sharing Kazuki Maruta (Chiba Univ.), Kentaro Nishimori (Niigata Univ.), Chang-Jun Ahn (Chiba Univ.) CQ2018-22 |
This paper presents performance comparison of interference suppression on blind adaptive array algorithms. Co-channel in... [more] | CQ2018-22 pp.25-30 |
| RCS, SR, SRW (Joint) |
2018-03-01 09:00 |
Kanagawa | YRP | Improving Semi-Blind Interference Suppression Performance on Multicell Massive MIMO Uplink by Beamspace Method Kazuki Maruta, Chang-Jun Ahn (Chiba Univ.) RCS2017-346 |
This paper improves our previously proposed semi-blind uplink interference suppression scheme for multicell multiuser ma... [more] | RCS2017-346 pp.167-172 |
| AP, RCS (Joint) |
2017-11-09 09:50 |
Fukuoka | Fukuoka University | A Study on Array Beam Pattern of Multi-User MIMO Basestation Using Null-Space Dimension Expansion
-- About Principle of Torelance Improvement against Channel Fluctuation by Orthogonalizing the Past Interference Channels -- Makoto Taromaru, Hironori Ban, Mai Ohta, Daisuke Motegi (Fukuoka Univ.) RCS2017-226 |
Some papers reported that a zero-forcing (ZF) adaptive array antenna or multi-user MIMO system at basestations can be ro... [more] | RCS2017-226 pp.123-127 |
| RCS | 2017-10-20 13:25 |
Miyagi | Tohoku Institute of Technology | [Invited Lecture]
Semi-Blind Adaptive Interference Cancellation with Decision Feedback Channel Estimation on Multicell Massive MIMO Uplink Kazuki Maruta, Chang-Jun Ahn (Chiba Univ.) RCS2017-194 |
This paper proposes a semi-blind uplink interference suppression scheme for multicell multiuser massive MIMO systems. In... [more] | RCS2017-194 pp.143-148 |
| CQ (2nd) |
2017-10-16 16:15 |
Fukuoka | Nishijin Plaza, Kyushu Univ. | [Poster Presentation]
Comparison of Interference Suppression Performance on Blind Adaptive Array Algorithms Kazuki Maruta, Chang-Jun Ahn (Chiba Univ.) |
We present performance comparison of interference suppression on blind adaptive array algorithms. Co-channel interferenc... [more] | |
| RCS | 2017-06-22 11:30 |
Okinawa | Ishigaki Shoukou Kaikan | A Study on Placements of Distributed Antenna Arrays in an Indoor Multi-User Massive MIMO System Yuya Suzuki, Toshihiko Nishimura, Takeo Ohgane, Yasutaka Ogawa (Hokkaido Univ.) RCS2017-71 |
In the 5th generation mobile communication system (5G), in order to realize high-speed and large capacity transmission, ... [more] | RCS2017-71 pp.127-132 |
| SR, SRW (Joint) |
2016-05-17 14:00 |
Overseas | Hotel Lasaretti, Oulu, Finland | [Poster Presentation]
A Study on Propagation Model and Mechanism on Null-Space Dimension Expansion for Multi-User MIMO Tolerant to Channel Fluctuation Daichi Tokuyasu, Makoto Taromaru, Ryosuke Ono, Mai Ohta (Fukuoka Univ.) SR2016-21 SRW2016-18 |
Some papers reported that a zero-forcing (ZF) adaptive array antenna or multi-user MIMO system can be robust against cha... [more] | SR2016-21 SRW2016-18 pp.73-74(SR), pp.61-62(SRW) |
| RCS, SAT (Joint) |
2015-08-17 10:20 |
Fukuoka | Fukuoka Univ. | DOA Estimation for Wideband Signals by Using Weighted Squared-TOPS Hirotaka Hayashi, Tomoaki Ohtsuki (Keio Univ.) RCS2015-134 |
Recently, direction-of-arrival (DOA) estimation for wideband incoming waves has been received attention with the progres... [more] | RCS2015-134 pp.13-18 |
| RCS, SAT (Joint) |
2015-08-18 11:40 |
Fukuoka | Fukuoka Univ. | On Interference Reduction Performance in Use of Remaining Array Freedom over The Number of Interference to Mitigate Degradation Due to Channel Fluctuation
-- Relation between Interference Subspace and Exporation Value from Past Channels -- Makoto Taromaru, Mai Ohta, Ryosuke Ono, Daichi Tokuyasu (Fukuoka Univ.) RCS2015-152 |
Some papers reported that a zero-forcing (ZF) adaptive array antenna or multi-user MIMO system can be robust against ch... [more] |
RCS2015-152 pp.119-122 |
| RCS, SAT (Joint) |
2015-08-18 15:30 |
Fukuoka | Fukuoka Univ. | Uplink Interference Suppression by MMSE-CMA Adaptive Array on Multicell Massive MIMO Systems Kazuki Maruta, Atsushi Ohta, Yushi Shirato, Satoshi Kurosaki, Takuto Arai, Tatsuhiko Iwakuni, Masataka Iizuka (NTT) RCS2015-154 |
This paper proposes uplink interference suppression scheme for multicell massive MIMO systems. Single frequency reuse is... [more] | RCS2015-154 pp.129-134 |
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