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Committee Date Time Place Paper Title / Authors Abstract Paper #
RCS 2023-10-20
Kagawa Kagawa University (Saiwai-cho Campus), and online
(Primary: On-site, Secondary: Online)
Consideration on Information Set and Frozen Set for Polar Codes Under BP Decoding
Kohei Ueda (Kagawa Univ.), Satoshi Suyama, Satoshi Nagata (NTT DOCOMO), Nobuhiko Miki (Kagawa Univ.) RCS2023-142
 [more] RCS2023-142
RCS 2023-06-14
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
RCS 2022-06-16
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
RCS, SIP, IT 2022-01-20
Online Online Influence of Design-SNR on Error Rate Performance Employing BP Decoder
Kohei Ueda (Kagawa Univ.), Satoshi Suyama, Takahiro Asai (NTT DOCOMO), Miki Nobuhiko (Kagawa Univ.) IT2021-30 SIP2021-38 RCS2021-198
Belief Propagation (BP) decoding, which is commonly used to decode Low Density Parity Check (LDPC) codes, is an effectiv... [more] IT2021-30 SIP2021-38 RCS2021-198
US 2021-09-24
Online Online Effect of Inter-focal Distance in Ultrasonic Focal Scanning Sequence on Bubble Generation in Cavitation-enhanced Ultrasonic Heating
Kohei Ueda, Shin Yoshizawa, Shin-ichiro Umemura (Tohoku.Univ.) US2021-36
High-intensity focused ultrasound (HIFU) is a noninvasive treatment of cancer by coagulating a tumor tissue through temp... [more] US2021-36
EE 2016-01-29
Fukuoka KURUME HOTEL ESPRIT Optimization of a Transformer Used for LLC Resonant DC-DC Converters for Photovoltaic Cells
Hisatsugu Kato (Tabuchi), Shotaro Karasuyama, Yoichi Ishizuka (Nagasaki Univ.), Kohei Ueda, Atsushi Ogasawara (Tabuchi) EE2015-25
 [more] EE2015-25
NS 2009-04-16
Tokyo Shibaura Institute of Technology (Tokyo) A GI+M/M/1 Queue and Its Application to Frame-Level Delay Analysis for High Bandwidth-Demanded Streaming Services
Kohei Ueda, Hiroyuki Masuyama, Shoji Kasahara, Yutaka Takahashi (Kyoto Univ.) NS2009-2
In order to evaluate the quality of service (QoS) of video streaming services, most of previous work has focused on the ... [more] NS2009-2
EA 2008-09-26
Tokyo   Measurements of the acoustical properties of polystyrene materials
Kohei Ueda, Yasushi Miki (Takushoku Univ.) EA2008-60
A system for measuring acoustical properties of materials is developed. It uses an impulsive sound wave which is designe... [more] EA2008-60
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