Spatial and temporal equalization based on an adaptive tapped-delay-line array antenna. - Naoto Ishii; Ryuji Kohno (PIMRC, 1994)

A spatially and temporally optimal multi-user receiver using an array antenna for DS/CDMA. - Ryuji Kohno; Naoto Ishii; Minami Nagatsuka (PIMRC, 1995)

Multiuser equalization using partial response based on adaptive array antenna for DS/CDMA. - Naoto Ishii; Ryuji Kohno (PIMRC, 1996)

Performance analysis of low complexity multi-user MIMO scheduling schemes for massive MIMO system. - Jun Shikida; Naoto Ishii; Yoshikazu Kakura (APCC, 2016)

Performance Analysis of Low Complexity Coordinated Beamforming for Massive MIMO System. - Jun Shikida; Naoto Ishii (VTC Fall, 2017)

Direction of Arrival Based Positioning in Three Dimensional Coordinates. - Martin Kurras; Lars Thiele; Xiao Peng; Naoto Ishii (WSA, 2017)

Sparse Channel Estimation Using Multiple DFT Matrices for Massive MIMO Systems. - Jun Shikida; Kazushi Muraoka; Naoto Ishii (VTC Fall, 2018)

Automatically Estimating Meaning Ambiguity of Emoticons. - Michal Ptaszynski; Fumito Masui; Naoto Ishii (BICA, 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 (VTC Spring, 2019)

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 (ECOC, 2020)

Deep Unfolding-Aided Gaussian Belief Propagation for Correlated Large MIMO Detection. - Daichi Shirase; Takumi Takahashi; Shinsuke Ibi; Kazushi Muraoka; Naoto Ishii; Seiichi Sampei (GLOBECOM, 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 (OFC, 2020)

Efficient Digital Predistortion Using Sparse Neural Network. - Masaaki Tanio; Naoto Ishii; Norifumi Kamiya (IEEE Access, 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)

Negentropy-Aware Loss Function for Trainable Belief Propagation in Coded MIMO Detection. - Daichi Shirase; Takumi Takahashi; Shinsuke Ibi; Kazushi Muraoka; Naoto Ishii; Seiichi Sampei (GLOBECOM, 2021)

Nonlinear Impairment Compensation Using Neural Networks. - Shinsuke Fujisawa; Fatih Yaman; Hussam G. Batshon; Masaaki Tanio; Naoto Ishii; Chaoran Huang 004; Thomas Ferreira de Lima; Yoshihisa Inada; Paul R. Prucnal; Norifumi Kamiya; Ting Wang 018 (OFC, 2021)

Inter-Access Point Coordinated User and Beam Selection for mmWave Distributed MIMO Systems. - Jun Shikida; Kazushi Muraoka; Toshiki Takeuchi; Naoto Ishii (VTC Fall, 2022)

Wideband Delta-Sigma Radio-over-Fiber Embedding a Pulse-Distortion Model for Beyond 5G. - Masaaki Tanio; Naoto Ishii; Kazushi Muraoka (VTC Fall, 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 (WCNC, 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 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., 2023)

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 (WCNC, 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)

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 (WCNC, 2025)