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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| SIP, IT, RCS | 2024-01-19 15:20 |
Miyagi | (Primary: On-site, Secondary: Online) |
[Encouragement Talk]
Outage-Minimization Beamforming Enabling High Sum-Rate for Millimeter-Wave OFDM Systems Sota Uchimura (UEC), Giuseppe Abreu (CU), Koji Ishibashi (UEC)  IT2023-70 SIP2023-103 RCS2023-245 |
This paper proposes a coordinated multi-point (CoMP) transmission scheme to mitigate path blockage effects in millimeter-... [more] | IT2023-70 SIP2023-103 RCS2023-245 pp.217-222 |
| SeMI, RCS, RCC, NS, SR (Joint) |
2023-07-13 13:50 |
Osaka | Osaka University Nakanoshima Center + Online (Primary: On-site, Secondary: Online) |
A Study on Bayesian Receiver Design for Uplink MU-MIMO Systems with Carrier Frequency Offsets Kenta Ito, Takumi Takahashi, Koji Igarashi (Osaka Univ.), Koji Ishibashi (UEC), Shinsuke Ibi (Doshisha Univ.) RCS2023-93 |
This paper proposes a novel Bayesian receiver design to realize high-accuracy data detection under observations subject ... [more] | RCS2023-93 pp.70-75 |
| RCS | 2023-06-14 10:30 |
Hokkaido | Hokkaido University, and online (Primary: On-site, Secondary: Online) |
Scalable Network-Assisted Full-Duplex Cell-Free Massive MIMO Systems with Limited Fronthaul Capacity Koushi Okui (UEC), Kengo Ando (CU), Koji Ishibashi (UEC) RCS2023-33 |
This paper proposes a scalable network-assisted full-duplex (NAFD) cell-free massive MIMO (CF-mMIMO) system that achieve... [more] | RCS2023-33 pp.31-36 |
| RCS | 2023-06-14 10:40 |
Hokkaido | Hokkaido University, and online (Primary: On-site, Secondary: Online) |
Physical Layer Authentication Based on Mahalanobis Distance Over Spacially Correlated MIMO Channels Kenta Miwa (UEC), Kengo Ando, Giuseppe Abreu (CU), Koji Ishibashi (UEC) RCS2023-34 |
This paper focuses on an authentication of a legitimate transmitter over multiple-input multiple-output (MIMO) channels ... [more] | RCS2023-34 pp.37-42 |
| RCS | 2023-06-14 17:30 |
Hokkaido | Hokkaido University, and online (Primary: On-site, Secondary: Online) |
Bayesian Receiver Design for Grant-Free NOMA Based on Low-Density Structured OFDM Kohei Ueda (UEC), Takanori Hara (Tokyo Univ. of Science), Koji Ishibashi (UEC) RCS2023-45 |
This paper studies a grant-free non-orthogonal multiple access (GF-NOMA) system using orthogonal frequency division mult... [more] | RCS2023-45 pp.99-104 |
| RCS | 2023-06-15 14:30 |
Hokkaido | Hokkaido University, and online (Primary: On-site, Secondary: Online) |
[Invited Talk]
New Research Trends Toward 6G Koji Ishibashi (UEC) RCS2023-58 |
There is a global surge in research and development efforts aimed at advancing the sixth-generation mobile communication... [more] | RCS2023-58 p.181 |
| SR | 2023-05-11 13:25 |
Hokkaido | Center of lifelong learning Kiran (Higashi Muroran) (Primary: On-site, Secondary: Online) |
LPWA concentrator using multi-antenna beamforming Keigo Saito, Takeo Fujii, Koji Ishibashi (UEC), Yu Shibata, Soma Toki, Hideki Endo (Tokyo Gas) SR2023-6 |
In recent years, information aggregation by wireless sensor network (WSN) has been attracted attention. WSN consists of ... [more] | SR2023-6 pp.33-40 |
| RCS, SR, SRW (Joint) |
2023-03-01 17:30 |
Tokyo | Tokyo Institute of Technology, and Online (Primary: On-site, Secondary: Online) |
Low-Complexity Channel Tracking Based on Compressive Sensing for Millimeter-Wave Communications Systems Sota Uchimura, Koji Ishibashi (UEC), Hiroki Iimori, Paulo Klaine, Szabolcs Malomsoky (ERJ) RCS2022-268 |
This paper studies channel tracking for millimeter-wave (mmWave) systems. The conventional method requires tremendous co... [more] | RCS2022-268 pp.124-129 |
| RCS, SR, SRW (Joint) |
2023-03-03 16:40 |
Tokyo | Tokyo Institute of Technology, and Online (Primary: On-site, Secondary: Online) |
A Study on Analog Beam Selection and Digital Beam Design for Millimeter-wave Cell-Free Massive MIMO Shunsuke Kamiwatari, Issei Kanno, Yoshiaki Amano (KDDI Research), Kengo Ando, Shuto Fukue, Koji Ishibashi (UEC) RCS2022-297 |
Cell-Free Massive MIMO (CF mMIMO) has gained much attention as one of potential technologies for Beyond 5G (B5G) whereas... [more] | RCS2022-297 pp.261-266 |
| RCS, NS (Joint) |
2022-12-15 16:35 |
Aichi | Nagoya Institute of Technology, and Online (Primary: On-site, Secondary: Online) |
Blind Multiple Measurement Vector Approximate Message Passing for Grant-Free Access Takanori Hara (Tokyo Univ. of Science), Koji Ishibashi (The Univ. of Electro-Communications) RCS2022-197 |
To accommodate a large number of users efficiently, grant-free non-orthogonal multiple access (GF-NOMA) has gained much ... [more] | RCS2022-197 pp.63-68 |
| RCS, AP, UWT (Joint) |
2022-11-16 09:55 |
Fukuoka | Kyushu University, and Online (Primary: On-site, Secondary: Online) |
Network-Assisted Full-Duplex Millimeter-Wave Cell-Free Massive MIMO with Localization-Aided Inter-User Channel Estimation Shuto Fukue (UEC), Giuseppe Abreu (JUB), Koji Ishibashi (UEC) RCS2022-164 |
We propose a joint resource allocation and beamforming design with location-aided channel estimation to mitigate the int... [more] | RCS2022-164 pp.55-60 |
| SAT, RCS (Joint) |
2022-08-26 10:15 |
Hokkaido | (Primary: On-site, Secondary: Online) |
Design of Coordinated Multi-Point Beamforming for Millimeter-Wave OFDM With Random Blockage Sota Uchimura, Hiroki Iimori (UEC), Giuseppe Abreu (JUB), Koji Ishibashi (UEC) RCS2022-121 |
This paper studies the beamforming design of coordinated multi-point (CoMP) using orthogonal frequency division multiple... [more] | RCS2022-121 pp.138-143 |
| RCS | 2022-06-16 10:00 |
Okinawa | University of the Ryukyus, Senbaru Campus and online (Primary: On-site, Secondary: Online) |
Secure Precoded OFDM Transmission Using Randomized Unitary Matrix Naoki Isono, Kengo Ando, Koji Ishibashi (UEC) RCS2022-42 |
This paper considers a network consisting of a base station (BS), a legitimate user equipment (UE), and an eavesdropper ... [more] | RCS2022-42 pp.108-113 |
| RCS | 2022-06-16 10:10 |
Okinawa | University of the Ryukyus, Senbaru Campus and online (Primary: On-site, Secondary: Online) |
Iterative Active User Detection for Grant-Free Non-Orthogonal Multiple Access in The Presence of Carrier Frequency Offsets Kohei Ueda (UEC), Takanori Hara (TUS), Koji Ishibashi (UEC) RCS2022-43 |
Grant-free non-orthogonal multiple access (GF-NOMA) systems suffer from the performance degradation of active user detec... [more] | RCS2022-43 pp.114-119 |
| IT, EMM | 2022-05-17 13:50 |
Gifu | Gifu University (Primary: On-site, Secondary: Online) |
Extensible Polarization-Adjusted Convolutional Codes and Its Application to Rateless Codes Yachongka Vamoua, Michitaka Kurosu, Mizuho Asahi, Hideki Yagi, Koji Ishibashi (UEC) IT2022-3 EMM2022-3 |
Rateless codes have been proposed to realize efficient communications when the channel state information is not availabl... [more] | IT2022-3 EMM2022-3 pp.13-18 |
| SR | 2022-01-24 10:50 |
Online | Online | [Invited Talk]
Research & Development of Robust CoMP for Millimeter Communications with Random Blockages Koji Ishibashi, Sota Uchimura (UEC), Tetsuya Iye, Yoshimi Fujii (KKE), Takahide Murakami, Hiroyuki Shinbo (KDDI Research, Inc.) SR2021-60 |
Next-generation mobile communications (Beyond 5G/6G) have to meet diverse demands of users such as ultra-high speed, low... [more] | SR2021-60 p.11 |
| RCS, SIP, IT | 2022-01-20 10:55 |
Online | Online | Design of Coded Caching for Multi-User MISO Channels with Heterogeneous Cache Sizes Ayaka Urabe, Koji Ishibashi (UEC), MohammadJavad Salehi, Antti Tolli (Univ. Oulu) IT2021-38 SIP2021-46 RCS2021-206 |
This paper focuses on coded caching when every user has a different memory size for caching and studies the design over ... [more] | IT2021-38 SIP2021-46 RCS2021-206 pp.57-62 |
| RCS, NS (Joint) |
2021-12-16 10:35 |
Nara | Nara-ken Bunka Kaikan and Online (Primary: On-site, Secondary: Online) |
Highly efficient multi-hop transmission using encryption-then-compression based on CRC-aided Polar code Ryota Yatsu, Koji Ishibashi (UEC), Hideki Endo, Sota Tsuchiya (Tokyo Gas) RCS2021-175 |
Packet aggregation with compression has been proposed as one of the methods in order to reduce the transmission time, wh... [more] | RCS2021-175 pp.1-6 |
| MIKA (3rd) |
2021-10-29 13:00 |
Okinawa | (Primary: On-site, Secondary: Online) |
[Tutorial Lecture]
Koji Ishibashi (UEC) |
[more] | |
| RCS | 2021-10-21 10:25 |
Online | Online | Performance Evaluation of Scalable Cell-Free Massive MIMO Systems with Multiple CPUs Subject to Backhaul Capacity Limitation Masaaki Ito, Issei Kanno, Kosuke Yamazaki (KDDI Research), Kengo Ando, Shuto Fukue (UEC), Hiroki Iimori (JUB), Koji Ishibashi (UEC) RCS2021-119 |
Cell-free massive multiple-input multiple-output (CF-mMIMO) systems have attracted attention worldwide, being considered... [more] | RCS2021-119 pp.7-12 |
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