Zobrazeno 1 - 10
of 63 910
pro vyhledávání: '"Ishibashi A"'
Autor:
Arai, Kabuto, Ishibashi, Koji
This paper proposes a channel estimation method for hybrid wideband multiple-input-multiple-output (MIMO) systems in high-frequency bands, including millimeter-wave (mmWave) and sub-terahertz (sub-THz), in the presence of beam squint effects and arra
Externí odkaz:
http://arxiv.org/abs/2412.03280
Autor:
Ishibashi, W., Gröbner, M.
Publikováno v:
2024, MNRAS, 529, 883
Binary black hole (BBH) evolution in the discs of active galactic nuclei (AGN) is a promising channel for gravitational wave (GW)-driven mergers. It is however unclear whether binaries interacting with the surrounding disc undergo orbital contraction
Externí odkaz:
http://arxiv.org/abs/2412.01925
Autor:
Ishibashi, W.
Publikováno v:
2024, MNRAS, 533, 455
An increasing number of exoplanets have been discovered in the Milky Way galaxy, which is also known to harbour a super-massive black hole (Sagittarius A*) at its centre. Here, we investigate how the central black hole (BH) activity may affect the ev
Externí odkaz:
http://arxiv.org/abs/2410.22428
Large Language Models (LLMs) have shown remarkable performance improvements and are rapidly gaining adoption in industry. However, the methods for improving LLMs are still designed by humans, which restricts the invention of new model-improving algor
Externí odkaz:
http://arxiv.org/abs/2410.15639
Autor:
Ishibashi, Atsuki, Molpeceres, Germán, Hidaka, Hiroshi, Oba, Yasuhiro, Lamberts, Thanja, Watanabe, Naoki
With the advent of JWST ice observations, dedicated studies on the formation reactions of detected molecules are becoming increasingly important. One of the most interesting molecules in interstellar ice is CO$_2$. Despite its simplicity, the main fo
Externí odkaz:
http://arxiv.org/abs/2410.01373
Autor:
Ban, Yoshisuke, Kato, Kimihiko, Iizuka, Shota, Oka, Hiroshi, Murakami, Shigenori, Ishibashi, Koji, Moriyama, Satoshi, Mori, Takahiro, Ono, Keiji
Pauli spin blockade (PSB) has been used in fundamental studies on spins in quantum dots (QDs) and qubit readouts. The operating temperature of PSB is limited by that of QDs and remains below 10 K, limiting wide application development. Herein, we con
Externí odkaz:
http://arxiv.org/abs/2409.10881
Broad absorption line (BAL) outflows are commonly detected in active galactic nuclei (AGN), but their driving mechanism remains poorly constrained. Here we investigate whether radiation pressure on dust can adequately explain the BAL phenomenon obser
Externí odkaz:
http://arxiv.org/abs/2409.03842
This technical report provides a detailed description of our approach to the EgoSchema Challenge 2024. The EgoSchema Challenge aims to identify the most appropriate responses to questions regarding a given video clip. In this paper, we propose Video
Externí odkaz:
http://arxiv.org/abs/2407.03610
This paper proposes a joint channel and data estimation (JCDE) algorithm for uplink multiuser extremely large-scale multiple-input-multiple-output (XL-MIMO) systems. The initial channel estimation is formulated as a sparse reconstruction problem base
Externí odkaz:
http://arxiv.org/abs/2406.19289
Autor:
Dastan, Sara, Zhou, Demin, Ishibashi, Takuya, Karantzoulis, Emanuel, Di Mitri, Simone, Lindberg, Ryan
Longitudinal impedances at high frequencies, which extend far beyond the width of the beam spectrum, can pose a threat to the performance of modern low-emittance electron storage rings, as they can establish a relatively low threshold for microwave i
Externí odkaz:
http://arxiv.org/abs/2405.18738