A fast hardware/software co-verification method for system-on-a-chip by using a C/C++ simulator and FPGA emulator with shared register communication. - Yuichi Nakamura 002; Kohei Hosokawa; Ichiro Kuroda; Ko Yoshikawa; Takeshi Yoshimura (DAC, 2004)

Design Method for 2-Channel Signal Word Decomposed Filters with Minimum Output Error and Their Effective VLSI Implementation. - Kohei Hosokawa; Mitsuhiko Yagyu; Akinori Nishihara (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2005)

Fast FPGA-Emulation-Based Simulation Environment for Custom Processors. - Yuichi Nakamura 002; Kohei Hosokawa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2006)

Efficient Memory Utilization for High-Speed FPGA-Based Hardware Emulators with SDRAMs. - Kohei Hosokawa; Katsunori Tanaka; Yuichi Nakamura 002 (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2007)

Practical techniques for nonlinear compensation and mitigation. - Kiyoshi Fukuchi; Atsufumi Shihavama; Kohei Hosokawa; Wakako Maeda; Hidemi Noguchi; Jun-ichi Abe (OFC, 2015)

Evaluation of the Signal Amplified by CC-MC-EDFA under Inter-core Crosstalk Using a Scalable SDM/TDM Translation Method. - Hitoshi Takeshita; Manabu Arikawa; Keiichi Matsumoto; Kohei Hosokawa; Emmanuel Le Taillandier de Gabory (ECOC, 2020)

Evaluation of the Link Budget Increase using Error-Tolerant TCPs for Optical Communication in Nonlinear Regime on 200G PM-16QAM Real-time Signal Demodulation. - Yohei Hasegawa; Hidemi Noguchi; Masaki Sato; Kohei Hosokawa; Morihiko Ota (ECOC, 2021)

Reduction of Power Consumption of Full C-band WDM Amplification by WDM Sub-banding and SDM Conversion using a High Core Count Multi-Core Amplifier. - Keiichi Matsumoto; Kohei Hosokawa; Emmanuel Le Taillandier de Gabory (ECOC, 2021)

Long-Haul WDM/SDM Transmission over Coupled 4-Core Fiber with Coupled 4-Core EDFA and Its MDL Characteristics Estimation. - Manabu Arikawa; Kohei Hosokawa; Kazunori Hayashi (OFC, 2021)

First Demonstration of Uncoupled 4-Core Multicore Fiber in a Submarine Cable Prototype with Integrated Multicore EDFA. - Hitoshi Takeshita; Kohei Nakamura; Yuushi Matsuo; Takanori Inoue; Daishi Masuda; Tetsuya Hiwatashi; Kohei Hosokawa; Yoshihisa Inada; Emmanuel Le Taillandier de Gabory (OFC, 2022)

Fast and Compact Node Monitoring System for Multi-Vendor Optical Network. - Eita Kobayashi; Kohei Hosokawa; Shigeyuki Yanagimachi; Emmanuel Le Taillandier de Gabory (OECC/PSC, 2022)

Novel Bidirectional Multicore EDFA Based on Twin Turbo Cladding Pumping Using Bidirectional Pumping and Recycling. - Hitoshi Takeshita; Yusuke Shimomura; Shoma Tateno; Kohei Hosokawa; Emmanuel Le Taillandier de Gabory (OECC/PSC, 2022)

Single Multicore-Fiber Bidirectional Spatial Channel Network Based on Spatial Cross-Connect and Multicore EDFA Efficiently Accommodating Asymmetric Traffic. - Kyosuke Nakada; Hitoshi Takeshita; Yuki Kuno; Yusuke Matsuno; Itsuki Urashima; Yusuke Shimomura; Yuji Hotta; Tsubasa Sasaki; Yudai Uchida; Kohei Hosokawa; Ryohei Otowa; Rika Tahara; et al. (OFC, 2023)

Cost-effective Network Capacity Enhancement with Multi-band Virtual Bypass Links. - Daisuke Saito; Yojiro Mori; Kohei Hosokawa; Shigeyuki Yanagimachi; Hiroshi Hasegawa (OFC, 2023)

Bidirectional single-multicore-fiber spatial channel network based on a spatial cross-connect and multicore EDFA that efficiently accommodates asymmetric data traffic. - Kyosuke Nakada; Hitoshi Takeshita; Yuki Kuno; Yusuke Matsuno; Itsuki Urashima; Yusuke Shimomura; Yuji Hotta; Tsubasa Sasaki; Yudai Uchida; Kohei Hosokawa; Ryohei Otowa; Rika Tahara; et al. (JOCN, 2023)

Cost-Effective Capacity Enhancement of Survivable Optical Networks by Supplemental Band Expansion and Backup Resource Sharing. - Daisuke Saito; Yojiro Mori; Kohei Hosokawa; Shigeyuki Yanagimachi; Hiroshi Hasegawa (OFC, 2024)

State-of-Polarization Monitoring Employing Optical Supervisory Channel Enabling Instantaneous Fluctuation Detection and Localization. - Yusuke Sasaki; Masaki Sato; Hidemi Noguchi; Kohei Hosokawa (OFC, 2024)

Transmission capacity expansion using bidirectional multicore EDFA under bidirectional signal assignment. - Hitoshi Takeshita; Yusuke Shimomura; Kohei Hosokawa (OFC, 2024)

Precise Localization of Rapid Instantaneous State of Polarization Fluctuations over FPGA. - Yusuke Sasaki; Masaki Sato; Hidemi Noguchi; Kohei Hosokawa; Wakako Maeda (OFC, 2025)

Experimental Demonstration of Nonlinearity Mitigation by Phase Conjugation and Digital Chromatic Dispersion Management Using Wavelength Converter DSP. - Shoma Tateno; Hidemi Noguchi; Kohei Hosokawa; Emmanuel Le Taillandier de Gabory (OFC, 2025)