Zobrazeno 1 - 10
of 74
pro vyhledávání: '"Yohei, Shibata"'
Publikováno v:
IEEE Access, Vol 12, Pp 55506-55520 (2024)
High-altitude platform stations (HAPSs) that provide direct communication services to smartphones on the ground are garnering significant attention as innovative mobile communication platforms suitable for ultrawide coverage areas. The deployment of
Externí odkaz:
https://doaj.org/article/0f13f8b4107b420588b119954688cc96
Publikováno v:
Future Internet, Vol 16, Iss 9, p 332 (2024)
There is a growing interest in high-altitude platform stations (HAPSs) as potential telecommunication infrastructures in the stratosphere, providing direct communication services to ground-based smartphones. Enhanced coverage and capacity can be real
Externí odkaz:
https://doaj.org/article/41f8e85341f1437687eb3a0fa37deb90
Publikováno v:
IEEE Access, Vol 10, Pp 68085-68098 (2022)
High altitude platform stations are attracting much attention as novel mobile communication platforms for ultra-wide coverage areas and disaster-resilient networks. Multi-cell configurations can increase communication capacity in a wide area. Convent
Externí odkaz:
https://doaj.org/article/05f98a2bd67f460db56700ddd91b5a80
Autor:
Yohei Shibata, Noboru Kanazawa, Mitsukuni Konishi, Kenji Hoshino, Yoshichika Ohta, Atsushi Nagate
Publikováno v:
IEEE Access, Vol 8, Pp 157995-158007 (2020)
High-altitude platform stations (HAPSs) are expected to provide ultrawide-coverage areas and disaster-resilient networks from the stratosphere at around 20 km by installing wireless equipment on HAPS. Because their altitude is much lower than that of
Externí odkaz:
https://doaj.org/article/7bbcd79c79144d4d9ced4c16d867a7b8
Autor:
Siyuan Yang, Mondher Bouazizi, Tomoaki Ohtsuki, Yohei Shibata, Wataru Takabatake, Kenji Hoshino, Atsushi Nagate
Publikováno v:
Future Internet, Vol 15, Iss 1, p 34 (2023)
In this paper, we propose a novel Deep Reinforcement Learning Evolution Algorithm (DRLEA) method to control the antenna parameters of the High-Altitude Platform Station (HAPS) mobile to reduce the number of low-throughput users. Considering the rando
Externí odkaz:
https://doaj.org/article/e655c987d84b4879bc428929d38e46e8
Autor:
Yuya Ueda, Takehiko Matsushita, Yohei Shibata, Kohei Takiguchi, Kumiko Ono, Akihiro Kida, Kyohei Nishida, Kanto Nagai, Yuichi Hoshino, Tomoyuki Matsumoto, Yoshitada Sakai, Ryosuke Kuroda
Publikováno v:
Orthopaedic Journal of Sports Medicine; Apr2024, Vol. 12 Issue 4, p1-9, 9p
Autor:
Yohei Shibata, Yasuhiko Akiyama, Fumio Nakagawa, Mizuki Kambara, Tomohiro Yamasaki, Shoko Urushimatsu, Tsutomu Yoshikane, Hidemasa Nagai, Kazuhiro Yamamoto, Kentaro Hayashi
Publikováno v:
Japanese Journal of Stroke. 45:44-50
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::00ece6f6f656eab4464bbb90ce0bf094
https://doi.org/10.3995/jstroke.11050
https://doi.org/10.3995/jstroke.11050
Autor:
Kazuhiro Harada, Ryosuke Kikuchi, Hideki Ishii, Yohei Shibata, Susumu Suzuki, Akihito Tanaka, Atsuo Suzuki, Kenshi Hirayama, Toyoaki Murohara
Publikováno v:
International Journal of Cardiology: Heart & Vasculature, Vol 19, Iss , Pp 3-7 (2018)
Background: Vascular endothelial growth factor-A (VEGF-A) promotes neovascularization and is attracting considerable attention as a remarkable risk factor in patients after acute myocardial infarction (AMI). In contrast, the association between VEGF-
Externí odkaz:
https://doaj.org/article/6f26b736834241a28b96dbe390d31478
Autor:
Yohei Shibata, Noboru Kanazawa, Mitsukuni Konishi, Kenji Hoshino, Yoshichika Ohta, Atsushi Nagate
Publikováno v:
IEEE Access, Vol 9, Pp 618-618 (2021)
In the above article [1], there was an incorrect statement on antenna pattern related to (1) in Section III-B. The sentence just after (1) should be read as “where $\Psi_{b}$ is the half-power beamwidth divided by 2, $\Psi_{1}=\Psi_{b} \sqrt{-L_{N}
Externí odkaz:
https://doaj.org/article/c9e1570dcb64432895f1188ea5eeb95e
Autor:
Yohei SHIBATA, Masahiro UCHIMURA, Kazuyuki MIKAMI, Mizuki KAMBARA, Tsutomu YOSHIKANE, Shinya HAGIWARA, Hidemasa NAGAI, Kentaro HAYASHI, Yasuhiko AKIYAMA
Publikováno v:
Neurosonology. 35:110-113
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c5da43fde2c6eca16605ab954e7a2a53
https://doi.org/10.2301/neurosonology.35.110
https://doi.org/10.2301/neurosonology.35.110