Naoto Ishii

According to our database, Naoto Ishii authored at least 28 papers between 1994 and 2026.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of four.

2026

Demonstration of a Hybrid Free-Space/Fiber CV-QKD System for Bridging the Last-Mile Gap.

Tetsuo Kawakami, Tomoki Terasaki, Seigo Takahashi, Hiroki Kawahara, Toshihiko Okamura, Naoto Ishii

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2026

Comparative performance of DV- and CV-QKD in Co-propagation with S+C+L-band WDM Signals.

Hiroki Kawahara, Tetsuo Kawakami, Toshihiko Okamura, Naoto Ishii

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2026

2025

Vector Similarity Search-Based MCS Selection for Iterative Signal Detection in Massive Multi-User MIMO-OFDM Systems.

Fuga Kobayashi, Takumi Takahashi, Shinsuke Ibi, Hideki Ochiai, Kazushi Muraoka, Takanobu Doi, Naoto Ishii

Proceedings of the 2025 IEEE Wireless Communications and Networking Conference (WCNC), 2025

Polarization-Independent 2.5-GHz Four-Encoding / Two-Decoy State BB84 QKD Systems Using Gated InGaAs SPADs.

Hiroki Kawahara, Seigo Takahashi, Toshihiko Okamura, Wakako Maeda, Naoto Ishii

Proceedings of the European Conference on Optical Communications, 2025

Highly Resilient Heterogeneous QKD Systems Integrated into Live Carrier-Grade C+L-Band ROADM-Based Links.

Hiroki Kawahara, Yasuhiro Katsube, Tetsuo Kawakami, Kotaro Ueda, Yu Yu, Toshihiko Okamura, Keisuke Mera, Yoshimichi Tanizawa, Masashi Ito, Mikio Fujiwara, Masahide Sasaki, Wakako Maeda, Naoto Ishii

Proceedings of the European Conference on Optical Communications, 2025

2024

Wideband Delta-Sigma Radio-Over-Fiber Embedding Complex-Valued Pulse-Distortion Model for 5G and Beyond.

Masaaki Tanio, Daisaku Ogasahara, Naoto Ishii, Kazushi Muraoka

IEEE Access, 2024

Outer Loop Link Adaptation Based on User Multiplexing for Generalized Approximate Message Passing in Massive MIMO.

Takanobu Doi, Jun Shikida, Daichi Shirase, Kazushi Muraoka, Naoto Ishii, Takumi Takahashi, Shinsuke Ibi

Proceedings of the IEEE Wireless Communications and Networking Conference, 2024

2023

Receive Beamforming Designed for Massive Multi-User MIMO Detection via Gaussian Belief Propagation.

Takanobu Doi, Jun Shikida, Daichi Shirase, Kazushi Muraoka, Naoto Ishii, Takumi Takahashi, Shinsuke Ibi

IEICE Trans. Commun., September, 2023

2022

A Sparse Neural Network-Based Power Adaptive DPD Design and Its Hardware Implementation.

Masaaki Tanio, Naoto Ishii, Norifumi Kamiya

IEEE Access, 2022

Receive Beamforming for Gaussian Belief Propagation in Massive Multi-user MIMO for Reducing Fronthaul Bandwidth.

Takanobu Doi, Jun Shikida, Kazushi Muraoka, Naoto Ishii, Daichi Shirase, Takumi Takahashi, Shinsuke Ibi

Proceedings of the IEEE Wireless Communications and Networking Conference, 2022

Wideband Delta-Sigma Radio-over-Fiber Embedding a Pulse-Distortion Model for Beyond 5G.

Masaaki Tanio, Naoto Ishii, Kazushi Muraoka

Proceedings of the 96th Vehicular Technology Conference, 2022

Inter-Access Point Coordinated User and Beam Selection for mmWave Distributed MIMO Systems.

Jun Shikida, Kazushi Muraoka, Toshiki Takeuchi, Naoto Ishii

Proceedings of the 96th Vehicular Technology Conference, 2022

2021

Nonlinear Impairment Compensation Using Neural Networks.

Shinsuke Fujisawa, Fatih Yaman, Hussam G. Batshon, Masaaki Tanio, Naoto Ishii, Chaoran Huang, Thomas Ferreira de Lima, Yoshihisa Inada, Paul R. Prucnal, Norifumi Kamiya, Ting Wang

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2021

Negentropy-Aware Loss Function for Trainable Belief Propagation in Coded MIMO Detection.

Daichi Shirase, Takumi Takahashi, Shinsuke Ibi, Kazushi Muraoka, Naoto Ishii, Seiichi Sampei

Proceedings of the IEEE Global Communications Conference, 2021

2020

A method for automatic estimation of meaning ambiguity of emoticons based on their linguistic expressibility.

Michal Ptaszynski, Fumito Masui, Naoto Ishii

Cogn. Syst. Res., 2020

Efficient Digital Predistortion Using Sparse Neural Network.

Masaaki Tanio, Naoto Ishii, Norifumi Kamiya

IEEE Access, 2020

Mitigation of Inter-Subcarrier Linear Crosstalk with Groupwise Fixed FDE assisted MIMO.

Masaki Sato, Hidemi Noguchi, Junichiro Matsui, Jun-ichi Abe, Naoto Ishii, Emmanuel Le Taillandier de Gabory

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2020

Deep Unfolding-Aided Gaussian Belief Propagation for Correlated Large MIMO Detection.

Daichi Shirase, Takumi Takahashi, Shinsuke Ibi, Kazushi Muraoka, Naoto Ishii, Seiichi Sampei

Proceedings of the IEEE Global Communications Conference, 2020

CNN Based Polarization Rotation Rate Estimation Using TIA Gain Monitoring in Integrated Coherent Receiver.

Masaki Sato, Hidemi Noguchi, Naoto Ishii, Emmanuel Le Taillandier de Gabory

Proceedings of the European Conference on Optical Communications, 2020

2019

5G R&D Achievements for High-Data-Rate and Low-Power-Consumption Radio Access Technologies with Higher-Frequency-Band and Wider-Bandwidth Massive MIMO.

Yukihiko Okumura, Satoshi Suyama, Naoto Ishii, Yasushi Maruta, Akihiro Okazaki, Atsushi Okamura, Jun Terada, Takeshi Onizawa

Proceedings of the 89th IEEE Vehicular Technology Conference, 2019

Automatically Estimating Meaning Ambiguity of Emoticons.

Michal Ptaszynski, Fumito Masui, Naoto Ishii

Proceedings of the Biologically Inspired Cognitive Architectures 2019, 2019

2018

Sparse Channel Estimation Using Multiple DFT Matrices for Massive MIMO Systems.

Jun Shikida, Kazushi Muraoka, Naoto Ishii

Proceedings of the 88th IEEE Vehicular Technology Conference, 2018

2017

Direction of Arrival Based Positioning in Three Dimensional Coordinates.

Martin Kurras, Lars Thiele, Xiao Peng, Naoto Ishii

Proceedings of the WSA 2017, 2017

Performance Analysis of Low Complexity Coordinated Beamforming for Massive MIMO System.

Jun Shikida, Naoto Ishii

Proceedings of the 86th IEEE Vehicular Technology Conference, 2017

2016

Performance analysis of low complexity multi-user MIMO scheduling schemes for massive MIMO system.

Jun Shikida, Naoto Ishii, Yoshikazu Kakura

Proceedings of the 2016 22nd Asia-Pacific Conference on Communications (APCC), 2016

1996

Multiuser equalization using partial response based on adaptive array antenna for DS/CDMA.

Naoto Ishii, Ryuji Kohno

Proceedings of the 7th IEEE International Symposium on Personal, 1996

1995

A spatially and temporally optimal multi-user receiver using an array antenna for DS/CDMA.

Ryuji Kohno, Naoto Ishii, Minami Nagatsuka

Proceedings of the 6th IEEE International Symposium on Personal, 1995

1994

Spatial and temporal equalization based on an adaptive tapped-delay-line array antenna.

Naoto Ishii, Ryuji Kohno

Proceedings of the 5th IEEE International Symposium on Personal, 1994