Tsutomu Ishikawa

25 papers A 1B 2Journal 7Unranked 15
YearRankTypeTitle / Venue / Authors
2025 J jnl
Downtilt Optimization of Array Antennas Based on Envelope Radiation Patterns for HAPS Service Links With Massive MIMO.
IEEE Access
Koichi Maki, Koji Tashiro, Tsutomu Ishikawa, Kenji Hoshino
2025 B conf
Field Trials and Evaluations of Nullforming-Based Spectrum Sharing Between Aerial Platforms and Terrestrial Networks on 5G FDD Bands.
WCNC
Koji Tashiro, Tsutomu Ishikawa, Kenji Hoshino, Atsushi Nagate
2025 — conf
Interference Management with Nullforming and Resource Allocation for Coverage Expansion in Integrated HAPS-Terrestrial Networks.
VTC2025-Spring
Tsutomu Ishikawa, Koji Tashiro, Koichi Maki, Kenji Hoshino
2025 — conf
Nullforming Strategy Based on User Distribution for Spectrum Sharing Between High-Altitude Platforms and Terrestrial Networks.
VTC2025-Fall
Kenzo Fontaine, Anders E. Kalør, Tomoaki Ohtsuki, Tsutomu Ishikawa
2025 — conf
R&D on High-Capacity and Spectrum-Sharing Technologies for HAPS Service Links.
APWCS
Kenji Hoshino, Koji Tashiro, Koichi Maki, Tsutomu Ishikawa, Wataru Takabatake
2024 — conf
Coordinated Nullforming with Limited Control Parameters for Spectrum Sharing Between High-Altitude Platforms and Terrestrial Networks.
VTC Spring
Tsutomu Ishikawa, Koji Tashiro, Kenji Hoshino, Atsushi Nagate
2024 — conf
Implementation and Experimental Evaluation of Nullforming-Based Interference Reduction Scheme for HAPS-Terrestrial Spectrum Sharing.
VTC Fall
Koji Tashiro, Tsutomu Ishikawa, Kenji Hoshino, Atsushi Nagate
2023 — conf
Low Insertion Loss 128-Gbaud HB-CDM with 3D-Printed Spot Size Converter Integrated InP-based Modulator.
OFC
Yasutaka Mizuno, Munetaka Kurokawa, Naoki Itabashi, Taichi Misawa, Masaru Takechi, Hiroshi Uemura, Hajime Tanaka, Tsutomu Ishikawa, Tomoya Saeki, Keiji Tanaka, Takatoshi Kato, Manabu Shiozaki, Katsumi Uesaka
2023 — conf
Spectrum Sharing Between High-Altitude Platforms and Terrestrial Networks Using Interference Coordination by Null Sweeping.
VTC Fall
Tsutomu Ishikawa, Koji Tashiro, Kenji Hoshino, Atsushi Nagate
2021 — conf
High Optical Output Power and High-responsivity IC-TROSA for 800 Gbps applications.
ECOC
Munetaka Kurokawa, Kenichi Nakayama, Masaru Takechi, Yasutaka Mizuno, Taichi Misawa, Eiichi Banno, Hiroshi Uemura, Yoshiyuki Sugimoto, Seiji Kumagai, Takuya Okimoto, Naoya Kono, Tsutomu Ishikawa, Hiroshi Hara, Takatoshi Kato, Keiji Tanaka, Mitsuru Ekawa, Katsumi Uesaka
2020 J jnl
Highly Reliable and Compact InP-Based In-Phase and Quadrature Modulators for Over 400 Gbit/s Coherent Transmission Systems.
IEICE Trans. Electron.
Hajime Tanaka, Tsutomu Ishikawa, Takashi Kitamura, Masataka Watanabe, Ryuji Yamabi, Ryo Yamaguchi, Naoya Kono, Takehiko Kikuchi, Morihiro Seki, Tomokazu Katsuyama, Mitsuru Ekawa, Hajime Shoji
2019 — conf
Study on the optical damage mechanism of InP IQ modulators using a step stress test.
OECC/PSC
Hajime Tanaka, Tsutomu Ishikawa, Mitsuru Ekawa
2006 — conf
Inference Scheme for Order-Sorted Logic Using Noun Phrases with Variables as Sorts.
MICAI
Masaki Kitano, Seikoh Nishita, Tsutomu Ishikawa
2002 J jnl
A mechanism for inferring approximate solutions under incomplete knowledge based on rule similarity.
Syst. Comput. Jpn.
Viet Ha Nguyen, Tsutomu Ishikawa, Akinori Abe
1997 J jnl
Stock Price Prediction Using Prior Knowledge and Neural Networks.
Intell. Syst. Account. Finance Manag.
Kazuhiro Kohara, Tsutomu Ishikawa, Yoshimi Fukuhara, Yukihiro Nakamura
1995 J jnl
Hypercube Multiprocessors with Bus Connections for Improving Communication Performance.
IEEE Trans. Computers
Tsutomu Ishikawa
1995 — conf
Totally defect-tolerant arrays capable of quick broadcasting.
DFT
Nobuo Tsuda, Tsutomu Ishikawa, Yukihiro Nakamura
1995 A conf
Viewpoint-Based Measurement of Semantic Similarity between Words.
AISTATS
Kaname Kasahara, Kazumitsu Matsuzawa, Tsutomu Ishikawa, Tsukasa Kawaoka
1994 — conf
Bypass Strategy in Hypercube Multiprocessors by adding Bus Connections.
PARLE
Tsutomu Ishikawa
1993 — conf
Optimal parallel back-propagation schemes for mesh-connected and bus-connected multiprocessors.
ICNN
Takashi Yukawa, Tsutomu Ishikawa
1991 J jnl
Hypercube Architecture with Bus Connections for Improving Communication Efficiency.
Syst. Comput. Jpn.
Tsutomu Ishikawa
1990 — conf
Presto: A Bus-Connected Multiprocessor for a Rete-Based Production System.
CONPAR
Hideo Kikuchi, Takashi Yukawa, Kazumitsu Matsuzawa, Tsutomu Ishikawa
1990 J jnl
Universal Fault-Tolerant Hypercube Architecture without a Switching Mechanism.
Syst. Comput. Jpn.
Tsutomu Ishikawa
1986 B conf
Hierarchical Array Processor (HAP) Featuring High Reliability and High System Performance.
ICPP
Tsutomu Ishikawa, Shigeharu Momoi, Shigeo Shimada, Yoshio Ogawa
1986 — conf
Hierarchical Array Processor System (HAP).
CONPAR
Shigeharu Momoi, Shigeo Shimada, Masamitsu Kobayashi, Tsutomu Ishikawa