Hisao Nakashima

57 papers Journal 2Unranked 55

Year	Rank	Type	Title / Venue / Authors
2025	—	`conf`	Advanced Multi-Span Signal Monitoring Using Digital Coherent Receivers. OFC Takeshi Hoshida, Ryu Shinzaki, Motohiko Eto, Kazuyuki Tajima, Kyosuke Sone, Setsuo Yoshida, Naoya Okada, Ichiro Yokokura, Atsushi Kanai, Junichi Sugiyama, Shoichiro Oda, Hisao Nakashima
2025	—	`conf`	An Accurate, Sensitive, and Wide-range Skew Calibration Method for Transmitter with Segmented Modulator Using Probability-maintained Multi-notch Sequence. OFC Tong Ye, Jingnan Li, Ke Zhang, Xiaofei Su, Shinsuke Tanaka, Yohei Sobu, Hisao Nakashima, Takeshi Hoshida, Zhenning Tao
2025	—	`conf`	In-service Monitor and Pre-compensation of 100 Gbaudclass Coherent Transmitter by a 5 GHz Photodetector. OFC Ke Zhang, Jingnan Li, Tong Ye, Hisao Nakashima, Takeshi Hoshida, Zhenning Tao
2025	—	`conf`	Low-cost and Power-efficient EEPN Mitigation Enabled by Accurate Jitter Waveform Estimation. OFC Jingnan Li, Xiaofei Su, Tong Ye, Ke Zhang, Hisao Nakashima, Takeshi Hoshida, Zhenning Tao
2025	—	`conf`	Maximizing Throughput by Band-wise Bidirectional SCLU Transmission with Lumped Amplification. OFC Olga Vassilieva, Inwoong Kim, Hiroyuki Irie, Hisao Nakashima, Takeshi Hoshida, Paparao Palacharla
2025	—	`conf`	Nonlinear Mitigation for Coherent Optical DAC Transmitter. ECOC Tong Ye, Ke Zhang, Xiaofei Su, Jingnan Li, Shinsuke Tanaka, Yohei Sobu, Motoyuki Nishizawa, Hisao Nakashima, Takeshi Hoshida, Zhenning Tao
2025	—	`conf`	Single-Carrier High-Capacity Transmission in Bandwidth-Limited Systems. OFC Guoxiu Huang, Hisao Nakashima, Takeshi Hoshida
2024	—	`conf`	240GBd-16QAM Single-Carrier Coherent Transmission over 120km SSMF for a Bandwidth Limited System with 1sps Speed and Simple DSP. OFC Guoxiu Huang, Yo Nakamura, Hisao Nakashima, Takeshi Hoshida
2024	—	`conf`	Clock Recovery of a 180 Gbaud Faster-than-Nyquist Signal Enabled by a Novel Adaptive Equalizer-Aided Algorithm. OFC Yo Nakamura, Guoxiu Huang, Hisao Nakashima, Takeshi Hoshida
2024	—	`conf`	Distortion Characterization and Performance Estimation of Time-interleaved DAC and ADC Based on the Measurement of Nonlinear Noise Spectrum. OFC Tong Ye, Ke Zhang, Xiaofei Su, Jingnan Li, Hisao Nakashima, Takeshi Hoshida, Zhenning Tao
2024	—	`conf`	Impact of Symbol Rate Optimization and Laser Frequency Stability on Transmission Reach of Super-Channel Transceiver Configurations for Beyond 1.6 Tb/s. OFC Olga Vassilieva, Inwoong Kim, Hiroyuki Irie, Hisao Nakashima, Takeshi Hoshida, Paparao Palacharla
2023	—	`conf`	1.96Tbps and 256-Gbaud Dual-carrier Faster than Nyquist Signal Transmission Using Two Narrow-bandwidth Modulators and Single Coherent Receiver. OFC Guoxiu Huang, Hisao Nakashima, Jun Matsui, Yohei Sobu, Shinsuke Tanaka, Takeshi Hoshida
2023	—	`conf`	Calibration of High-Speed Time-Interleaving DAC. OFC Ke Zhang, Xiaofei Su, Hisao Nakashima, Takeshi Hoshida, Zhenning Tao
2023	—	`conf`	Distortion Analysis and Equivalent Multiplicative and Additive Noise Model for High-Speed DAC and ADC. OFC Xiaofei Su, Tone Ye, Ke Zhang, Chengwu Yang, Hisao Nakashima, Takeshi Hoshida, Zhenning Tao
2022	—	`conf`	A Sensitive Method for Estimating the Linear Length of a System. OECC/PSC Chengwu Yang, Tong Ye, Ke Zhang, Zhenning Tao, Hisao Nakashima, Takeshi Hoshida
2022	—	`conf`	A Simple and Accurate Method to Estimate the Nonlinear Performance of VCSEL IM-DD System. OFC Chengwu Yang, Tong Ye, Ke Zhang, Zhenning Tao, Hisao Nakashima, Takeshi Hoshida
2022	—	`conf`	Faster than Nyquist PDM-16QAM Modulation with Low Resolution and Low Speed DAC. OECC/PSC Guoxiu Huang, Hisao Nakashima, Takeshi Hoshida
2022	—	`conf`	How to Connect Device Nonlinear Specification and System Nonlinear Penalty. OFC Zhenning Tao, Ke Zhang, Chengwu Yang, Xiaofei Su, Tong Ye, Hisao Nakashima, Takeshi Hoshida
2022	—	`conf`	Nonlinear Distortion Identification for Coherent Optical Communication. OECC/PSC Ke Zhang, Zhenning Tao, Chengwu Yang, Hisao Nakashima, Takeshi Hoshida
2022	—	`conf`	Probabilistic vs. Geometric Constellation Shaping in Commercial Applications. OFC Olga Vassilieva, Inwoong Kim, Hiroyuki Irie, Yohei Koganei, Hisao Nakashima, Yuichi Akiyama, Takeshi Hoshida, Paparao Palacharla
2021	—	`conf`	Characterization, Modelling and Measurement of Device Imperfections in Advanced Coherent Transceivers. ECOC Zhenning Tao, Yangyang Fan, Tong Ye, Xiaofei Su, Hisao Nakashima, Takeshi Hoshida
2021	—	`conf`	In-field Calibration of Phase Response of Optical Transmitter Using Built-in Monitor Photodiode. OFC Yangyang Fan, Zhenning Tao, Hisao Nakashima, Takeshi Hoshida
2021	—	`conf`	Polarization Change Monitor Based on Geometrical Analysis in Stokes Space. ECOC Jingnan Li, Yangyang Fan, Zhenning Tao, Hisao Nakashima, Takeshi Hoshida
2021	—	`conf`	The Interaction Between Pilot Based Linear Equalizer and Device Nonlinearity in Optical Coherent Communication. ECOC Xiaofei Su, Ke Zhang, Tong Ye, Zhenning Tao, Hisao Nakashima, Takeshi Hoshida
2020	—	`conf`	A Method to Separate the Penalties Caused by Various Nonlinear Signal-Pump Impairments in Raman Amplified System. OFC Jingnan Li, Yangyang Fan, Zhenning Tao, Tong Ye, Hiroyuki Irie, Hisao Nakashima, Kousuke Komaki, Takeshi Hoshida
2020	—	`conf`	Advanced DSP for Monitoring and Mitigation in Optical Transport Networks. OFC Takeshi Hoshida, Takahito Tanimura, Shoichiro Oda, Setsuo Yoshida, Hisao Nakashima, Guoxiu Huang, Zhenning Tao
2020	—	`conf`	Side Effect of Normal Vector Recovery based Polarization Demultiplexing in Stokes Space and the Countermeasure. ECOC Jingnan Li, Yangyang Fan, Zhenning Tao, Hisao Nakashima, Takeshi Hoshida
2020	—	`conf`	Up to 115GBaud Faster Than Nyquist PDM-64QAM Based on Tomlinson-Harashima Precoding with Single DAC. ECOC Guoxiu Huang, Hisao Nakashima, Yuichi Akiyama, Takeshi Hoshida
2019	—	`conf`	A Polarization Change Monitor by Eigenvalue Analysis in Coherent Receiver. OFC Tong Ye, Xiaofei Su, Ke Zhang, Zhenning Tao, Guoxiu Huang, Hisao Nakashima, Takeshi Hoshida
2019	—	`conf`	Low-Complexity, Low-PAPR Polarization-Time Code for PDL Mitigation. OFC Tomofumi Oyama, Guoxiu Huang, Hisao Nakashima, Yoshitaka Nomura, Tomoo Takahara, Takeshi Hoshida
2019	—	`conf`	Optimum Bit-Level Distribution Matching with at Most O(N OFC Yohei Koganei, Kiichi Sugitani, Hisao Nakashima, Takeshi Hoshida
2019	—	`conf`	Partial Multilevel Coding with Probabilistic Shaping for Low-power Optical Transmission. OECC/PSC Kiichi Sugitani, Yohei Koganei, Tomofumi Oyama, Hisao Nakashima
2019	—	`conf`	Polarization Change Monitor Based on Jointly Applied Constant Modulus Algorithm and Carrier Phase Recovery in Coherent Receiver. OECC/PSC Yanhui Qi, Tong Ye, Yangyang Fan, Zhenning Tao, Guoxiu Huang, Hisao Nakashima, Takeshi Hoshida
2019	—	`conf`	Transceiver IQ imperfection Monitor by Digital Signal Processing in Coherent Receiver. OECC/PSC Yangyang Fan, Yufeng Jiang, Junpeng Liang, Zhenning Tao, Hisao Nakashima, Takeshi Hoshida
2018	—	`conf`	A Simple, Robust Two-Tone Method to Measure the Dynamic Nonlinear Characteristics of Phase Shifter in Silicon Mach-Zehnder Modulator. OFC Tong Ye, Yanhui Qi, Hao Chen, Zhenning Tao, Tomofumi Oyama, Hisao Nakashima, Takeshi Hoshida, Haowen Shu, Xingjun Wang
2018	—	`conf`	Efficient Polarization Dependent Loss Monitoring and Compensation in Coherent Transmission System. ECOC Guoxiu Huang, Yuichi Akiyama, Tomohiro Yamauchi, Shoichiro Oda, Tomofumi Oyama, Hisao Nakashima, Takeshi Hoshida
2018	—	`conf`	Experimental Verification of IQ Imbalance Monitor for High-Order Modulated Transceivers. ECOC Yangyang Fan, Xiaofei Su, Hao Chen, Junpeng Liang, Zhenning Tao, Hisao Nakashima, Takeshi Hoshida
2018	—	`conf`	Multilevel Coding with Spatially-Coupled Codes for beyond 400Gbps Optical Transmission. OFC Yohei Koganei, Tomofumi Oyama, Kiichi Sugitani, Hisao Nakashima, Takeshi Hoshida
2018	—	`conf`	PDL Mitigation by Polarization-Time Codes with Simple Decoding and Pilot-Aided Demodulation. ECOC Tomofumi Oyama, Hisao Nakashima, Yoshitaka Nomura, Guoxiu Huang, Takahito Tanimura, Takeshi Hoshida
2017	J	`jnl`	400Gbit/s/ch Field Demonstration of Modulation Format Adaptation Based on Pilot-Aided OSNR Estimation Using Real-Time DSP. IEICE Trans. Commun. Seiji Okamoto, Kazushige Yonenaga, Kengo Horikoshi, Mitsuteru Yoshida, Yutaka Miyamoto, Masahito Tomizawa, Takeshi Okamoto, Hidemi Noguchi, Jun-ichi Abe, Junichiro Matsui, Hisao Nakashima, Yuichi Akiyama, Takeshi Hoshida, Hiroshi Onaka, Kenya Sugihara, Soichiro Kametani, Kazuo Kubo, Takashi Sugihara
2017	—	`conf`	An Accurate and Robust In-phase/Quadrature Skew Measurement for Coherent Optical Transmitter by Image Spectrum Analyzing. ECOC Hao Chen, Xiaofei Su, Zhenning Tao, Tomofumi Oyama, Hisao Nakashima, Takeshi Hoshida, Kazutoshi Kato
2017	—	`conf`	Autonomous and Real-time Controlled Transceiver Prototype with FSK Supervisory Signal and Performance Monitoring. ECOC Yi Ge, Shoichiro Oda, Ying Zhao, Guoxiu Huang, Setsuo Yoshida, Hisao Nakashima, Yuichi Akiyama, Yoshio Hirose, Zhenning Tao, Takeshi Hoshida
2017	—	`conf`	Digital nonlinear compensation technologies in coherent optical communication systems. OFC Hisao Nakashima, Tomofumi Oyama, Chihiro Ohshima, Yuichi Akiyama, Zhenning Tao, Takeshi Hoshida
2017	—	`conf`	Polarization Dependent Loss Monitor with Visualization on Poincaré Sphere in Digital Coherent System. ECOC Guoxiu Huang, Shoichiro Oda, Yuichi Akiyama, Hiroyuki Irie, Setsuo Yoshida, Hisao Nakashima, Takeshi Hoshida
2017	—	`conf`	Reach extension with 32- and 64 GBaud single carrier vs. multi-carrier signals. OFC Olga Vassilieva, Inwoong Kim, Tomofumi Oyama, Shoichiro Oda, Hisao Nakashima, Takeshi Hoshida, Tadashi Ikeuchi
2015	—	`conf`	Complexity reduction of perturbation-based nonlinear compensator by sub-band processing. OFC Tomofumi Oyama, Hisao Nakashima, Takeshi Hoshida, Takahito Tanimura, Yuichi Akiyama, Zhenning Tao, Jens C. Rasmussen
2015	—	`conf`	Experimental investigation on nonlinear tolerance of subcarrier multiplexed signals with spectrum optimization. ECOC Hisao Nakashima, Takahito Tanimura, Tomofumi Oyama, Yuichi Akiyama, Takeshi Hoshida, Jens C. Rasmussen
2015	—	`conf`	Nonlinear mitigation technique using subcarrier power pre-emphasis and digital nonlinear compensation in superchannel transmission. ECOC Tomohiro Yamauchi, Olga Vassilieva, Shoichiro Oda, Inwoong Kim, Chihiro Ohshima, Hisao Nakashima, Takeshi Hoshida, Yasuhiko Aoki, Motoyoshi Sekiya, Yuichi Akiyama, Jens C. Rasmussen
2015	—	`conf`	PDL-tolerant signal generation by digital spectrum slicing and polarization control. OFC Takahito Tanimura, Tomofumi Oyama, Hisao Nakashima, Jens C. Rasmussen
2014	—	`conf`	Digital nonlinear compensation for spectrally efficient superchannel transmission at 400Gbit/s and beyond. ECOC Takeshi Hoshida, Takahito Tanimura, Tomofumi Oyama, Shoichiro Oda, Hisao Nakashima, Yangyang Fan, Liang Dou, Zhenning Tao, Jens C. Rasmussen
2014	—	`conf`	Impact of fiber nonlinearity on duobinary-QPSK in super-Nyquist WDM transmission. ECOC Tomofumi Oyama, Takahito Tanimura, Hisao Nakashima, Takeshi Hoshida, Zhenning Tao, Jens C. Rasmussen
2014	—	`conf`	Robust and efficient receiver-side compensation method for intra-channel nonlinear effects. OFC Tomofumi Oyama, Hisao Nakashima, Shoichiro Oda, Tomohiro Yamauchi, Zhenning Tao, Takeshi Hoshida, Jens C. Rasmussen
2014	—	`conf`	Soft decision forward error correction over nonlinear transmission of 1-Tb/s superchannel. ECOC Takahito Tanimura, Yohei Koganei, Hisao Nakashima, Takeshi Hoshida, Jens C. Rasmussen
2014	J	`jnl`	Three Benefits Brought by Perturbation Back-Propagation Algorithm in 224Gb/s DP-16QAM Transmission. IEICE Trans. Commun. Shoichiro Oda, Takahito Tanimura, Takeshi Hoshida, Yuichi Akiyama, Hisao Nakashima, Kyosuke Sone, Zhenning Tao, Jens C. Rasmussen
2013	—	`conf`	Advanced and feasible signal processing algorithm for nonlinear mitigation. OFC/NFOEC Takeshi Hoshida, Liang Dou, Weizhen Yan, Lei Li, Zhenning Tao, Shoichiro Oda, Hisao Nakashima, Chihiro Ohshima, Tomofumi Oyama, Jens C. Rasmussen
2013	—	`conf`	Impact of pulse shaping and transceiver electrical bandwidths on nonlinear compensated transmission. OFC/NFOEC Tomofumi Oyama, Takeshi Hoshida, Hisao Nakashima, Chihiro Ohshima, Zhenning Tao, Jens C. Rasmussen
1986	—	`conf`	Methods for Achieving Integrated Operation in a High-Performance Optical Loop Intercomputer Communications System. FJCC Masahiro Kurata, Seishiro Tsuruho, Takafumi Isogawa, Hisao Nakashima