Character recognition using a dynamic opto-electronic neural network with unipolar binary weights. - Masaya Oita; Masanobu Takahashi; Shuichi Tai; Keisuke Kojima; Kazuo Kyuma (IJCNN, 1990)

Interference management with Han-Kobayashi coding: Dual-carrier coherent optical communications. - Toshiaki Koike-Akino; Keisuke Kojima; David S. Millar; Kieran Parsons; Soichiro Kametani; Takashi Sugihara; Tsuyoshi Yoshida; Kazuyuki Ishida; Yoshikuni Miyata; Wataru Matsumoto; Takashi Mizuochi (ECOC, 2014)

Turbo demodulation for LDPC-coded high-order QAM in presence of transmitter angular skew. - Toshiaki Koike-Akino; David S. Millar; Keisuke Kojima; Kieran Parsons; Tsuyoshi Yoshida; Kazuyuki Ishida; Yoshikuni Miyata; Wataru Matsumoto; Takashi Mizuochi (ECOC, 2014)

Constant modulus 4D optimized constellation alternative for DP-8QAM. - Keisuke Kojima; David S. Millar; Toshiaki Koike-Akino; Kieran Parsons (ECOC, 2014)

Maximizing transmission capacity of superchannels using rate-adaptive FEC. - Keisuke Kojima; David S. Millar; Toshiaki Koike-Akino; Kieran Parsons; Soichiro Kametani; Takashi Sugihara (ECOC, 2014)

High-dimensional modulation for mode-division multiplexing. - Sercan Ö. Arik; David S. Millar; Toshiaki Koike-Akino; Keisuke Kojima; Kieran Parsons (OFC, 2014)

Cycle slip-mitigating turbo demodulation in LDPC-coded coherent optical communications. - Toshiaki Koike-Akino; Keisuke Kojima; David S. Millar; Kieran Parsons; Yoshikuni Miyata; Wataru Matsumoto; Takashi Sugihara; Takashi Mizuochi (OFC, 2014)

Comparison of quaternary block-coding and sphere-cutting for high-dimensional modulation. - David S. Millar; Toshiaki Koike-Akino; Sercan Ö. Arik; Keisuke Kojima; Kieran Parsons (OFC, 2014)

Experimental demonstration of 24-dimensional extended Golay coded modulation with LDPC. - David S. Millar; Toshiaki Koike-Akino; Robert Maher; Domaniç Lavery; Milen Paskov; Keisuke Kojima; Kieran Parsons; Benn C. Thomsen; Seb J. Savory; Polina Bayvel (OFC, 2014)

Laser frequency drift compensation with Han-Kobayashi coding in superchannel nonlinear optical communications. - Toshiaki Koike-Akino; David S. Millar; Keisuke Kojima; Kieran Parsons (ECOC, 2015)

Detection of a 1 Tb/s superchannel with a single coherent receiver. - David S. Millar; Robert Maher; Domaniç Lavery; Toshiaki Koike-Akino; Milutin Pajovic; Alex Alvarado; Milen Paskov; Keisuke Kojima; Kieran Parsons; Benn C. Thomsen; Seb J. Savory; Polina Bayvel (ECOC, 2015)

Experimental demonstration of multi-pilot aided carrier phase estimation for DP-64QAM and DP-256QAM. - Milutin Pajovic; David S. Millar; Toshiaki Koike-Akino; Robert Maher; Domaniç Lavery; Alex Alvarado; Milen Paskov; Keisuke Kojima; Kieran Parsons; Benn C. Thomsen; Seb J. Savory; Polina Bayvel (ECOC, 2015)

Coded modulation design for finite-iteration decoding and high-dimensional modulation. - Toshiaki Koike-Akino; David S. Millar; Keisuke Kojima; Kieran Parsons (OFC, 2015)

Separation of semiconductor laser intrinsic linewidth and 1/f noise using multiple fiber lengths with the delayed self-heterodyne method. - Keisuke Kojima; Yuichiro Horiguchi; Toshiaki Koike-Akino; Yasuhisa Shimakura; Kentaro Enoki; Eiji Yagyu (OFC, 2015)

Design of constant modulus modulation considering envelopes. - Keisuke Kojima; Toshiaki Koike-Akino; David S. Millar; Kieran Parsons (OFC, 2015)

Transceiver-limited high spectral efficiency Nyquist-WDM systems. - David S. Millar; Robert Maher; Domaniç Lavery; Toshiaki Koike-Akino; Alex Alvarado; Milen Paskov; Keisuke Kojima; Kieran Parsons; Benn C. Thomsen; Seb J. Savory; Polina Bayvel (OFC, 2015)

Dynamic window decoding for LDPC convolutional codes in low-latency optical communications. - Tian Xia; Toshiaki Koike-Akino; David S. Millar; Keisuke Kojima; Kieran Parsons; Yoshikuni Miyata; Kenya Sugihara; Wataru Matsumoto (OFC, 2015)

BICM capacity analysis of 8QAM-alternative modulation formats in nonlinear fiber transmission. - Keisuke Kojima; Toshiaki Koike-Akino; David S. Millar; Kieran Parsons (TIWDC, 2015)

Reduced-complexity blind chromatic dispersion estimation for digital coherent systems. - Valeria Arlunno; David S. Millar; Toshiaki Koike-Akino; Milutin Pajovic; Keisuke Kojima; Kieran Parsons (OFC, 2016)

Pareto-efficient set of modulation and coding based on RGMI in nonlinear fiber transmissions. - Toshiaki Koike-Akino; Keisuke Kojima; David S. Millar; Kieran Parsons; Tsuyoshi Yoshida; Takashi Sugihara (OFC, 2016)

GMI-maximizing constellation design with Grassmann projection for parametric shaping. - Toshiaki Koike-Akino; David S. Millar; Kieran Parsons; Keisuke Kojima (OFC, 2016)

Investigation of low code rate DP-8PSK as an alternative to DP-QPSK. - Keisuke Kojima; Toshiaki Koike-Akino; David S. Millar; Milutin Pajovic; Kieran Parsons; Tsuyoshi Yoshida (OFC, 2016)

Irregular Polar Coding for Multi-Level Modulation in Complexity-Constrained Lightwave Systems. - Toshiaki Koike-Akino; Congzhe Cao; Ye Wang 001; Stark C. Draper; David S. Millar; Kieran Parsons; Keisuke Kojima; Milutin Pajovic; Lídia Galdino; Daniel J. Elson; Domaniç Lavery; Polina Bayvel (ECOC, 2017)

Reach Extension with Lattice Precoding for Optical PAM Transmission in Data Center Networks. - Toshiaki Koike-Akino; David S. Millar; Kieran Parsons; Keisuke Kojima (ECOC, 2017)

Fast Many-to-One Voice Conversion using Autoencoders. - Yusuke Sekii; Ryohei Orihara; Keisuke Kojima; Yuichi Sei; Yasuyuki Tahara; Akihiko Ohsuga (ICAART (2), 2017)

Bit-interleaved polar-coded modulation for low-latency short-block transmission. - Toshiaki Koike-Akino; Ye Wang 001; Stark C. Draper; Kenya Sugihara; Wataru Matsumoto; David S. Millar; Kieran Parsons; Keisuke Kojima (OFC, 2017)

Lattice precoding for IM/DD POF interconnects. - Toshiaki Koike-Akino; Kieran Parsons; David S. Millar; Keisuke Kojima (OFC, 2017)

Fully-parallel soft-decision cycle slip recovery. - Toshiaki Koike-Akino; Tsuyoshi Yoshida; Kieran Parsons; David S. Millar; Keisuke Kojima; Milutin Pajovic (OFC, 2017)

Nonlinearity-tolerant time domain hybrid modulation for 4-8 bits/symbol based on 2A8PSK. - Keisuke Kojima; Tsuyoshi Yoshida; Kieran Parsons; Toshiaki Koike-Akino; David S. Millar; Keisuke Matsuda (OFC, 2017)

A simplified dual-carrier DP-64QAM 1 Tb/s transceiver. - David S. Millar; Lídia Galdino; Robert Maher; Milutin Pajovic; Toshiaki Koike-Akino; Gabriel Saavedra; Daniel J. Elson; Domaniç Lavery; Kai Shi 003; M. Sezer Erkilinc; Eric Sillekens; Robert I. Killey; et al. (OFC, 2017)

Lattice Precoding for Multi-Span Constellation Shaping. - Toshiaki Koike-Akino; David S. Millar; Keisuke Kojima; Kieran Parsons (ECOC, 2018)

Schalkwijk-Kailath Feedback Error Correction for Optical Data Center Interconnects. - Toshiaki Koike-Akino; David S. Millar; Kieran Parsons; Keisuke Kojima (ECOC, 2018)

Superchannel CPE with Wyner-Ziv Cooperation for Band-Limited Interconnects in Multi-DSP Receiver. - Toshiaki Koike-Akino; Milutin Pajovic; David S. Millar; Keisuke Kojima; Kieran Parsons (ECOC, 2018)

EXIT Convergence Analysis of BICM-ID Based on High-Dimensional Modulation and Polar-TPC. - Toshiaki Koike-Akino; Ye Wang 001; Keisuke Kojima; David S. Millar; Kieran Parsons (ECOC, 2018)

Irregular Polar Turbo Product Coding for High-Throughput Optical Interface. - Toshiaki Koike-Akino; Congzhe Cao; Ye Wang 001; Keisuke Kojima; David S. Millar; Kieran Parsons (OFC, 2018)

Multi-Dimensional Pulse-Shaping FIR Filter for Nonlinear Interference Alignment. - Toshiaki Koike-Akino; David S. Millar; Kieran Parsons; Keisuke Kojima (OFC, 2018)

Rate-Adaptive LDPC Convolutional Coding with Joint Layered Scheduling and Shortening Design. - Toshiaki Koike-Akino; David S. Millar; Kieran Parsons; Keisuke Kojima (OFC, 2018)

Comparison of Nonlinearity Tolerance of Modulation Formats for Subcarrier Modulation. - Keisuke Kojima; Tsuyoshi Yoshida; Kieran Parsons; Toshiaki Koike-Akino; David S. Millar; Keisuke Matsuda (OFC, 2018)

Coded Modulation for Next-Generation Optical Communications. - David S. Millar; Tobias Fehenberger; Toshiaki Koike-Akino; Keisuke Kojima; Kieran Parsons (OFC, 2018)

Broadband SOI Mode Order Converter Based on Topology Optimization. - Min Teng; Keisuke Kojima; Toshiaki Koike-Akino; Bingnan Wang; Chungwei Lin; Kieran Parsons (OFC, 2018)

Partition-Based Probabilistic Shaping for Fiber-Optic Communication Systems. - Tobias Fehenberger; David S. Millar; Toshiaki Koike-Akino; Keisuke Kojima; Kieran Parsons (OFC, 2019)

Polar-Coded Modulation for Joint Channel Coding and Probabilistic Shaping. - Toshiki Matsumine; Toshiaki Koike-Akino; David S. Millar; Keisuke Kojima; Kieran Parsons (OFC, 2019)

Deep Neural Network Inverse Modeling for Integrated Photonics. - Mohammad H. Tahersima; Keisuke Kojima; Toshiaki Koike-Akino; Devesh K. Jha; Bingnan Wang; Chungwei Lin; Kieran Parsons (OFC, 2019)

Hardware-Efficient Quantized Polar Decoding with Optimized Lookup Table. - Toshiaki Koike-Akino; Ye Wang 001; Semih Cayci; David S. Millar; Keisuke Kojima; Kieran Parsons (OECC/PSC, 2019)

Neural Turbo Equalization: Deep Learning for Fiber-Optic Nonlinearity Compensation. - Toshiaki Koike-Akino; Ye Wang 001; David S. Millar; Keisuke Kojima; Kieran Parsons (CoRR, 2019)

Multiset-Partition Distribution Matching. - Tobias Fehenberger; David S. Millar; Toshiaki Koike-Akino; Keisuke Kojima; Kieran Parsons (IEEE Trans. Commun., 2019)

End-to-End Deep Learning for Phase Noise-Robust Multi-Dimensional Geometric Shaping. - Veeru Talreja; Toshiaki Koike-Akino; Ye Wang 001; David S. Millar; Keisuke Kojima; Kieran Parsons (ECOC, 2020)

Variational Quantum Demodulation for Coherent Optical Multi-Dimensional QAM. - Toshiaki Koike-Akino; Toshiki Matsumine; Ye Wang 001; David S. Millar; Keisuke Kojima; Kieran Parsons (OFC, 2020)

Stochastic EXIT Design for Low-Latency Short-Block LDPC Codes. - Toshiaki Koike-Akino; David S. Millar; Keisuke Kojima; Kieran Parsons (OFC, 2020)

Deep Neural Networks for Designing Integrated Photonics. - Keisuke Kojima; Mohammad H. Tahersima; Toshiaki Koike-Akino; Devesh K. Jha; Yingheng Tang; Ye Wang 001; Kieran Parsons; Fengqiao Sang; Jonathan Klamkin (OFC, 2020)

Generative Deep Learning Model for a Multi-Level Nano-Optic Broadband Power Splitter. - Yingheng Tang; Keisuke Kojima; Toshiaki Koike-Akino; Ye Wang 001; Pengxiang Wu; Mohammad H. Tahersima; Devesh K. Jha; Kieran Parsons; Minghao Qi (OFC, 2020)

Analysis of Nonlinear Fiber Interactions for Finite-Length Constant-Composition Sequences. - Tobias Fehenberger; David S. Millar; Toshiaki Koike-Akino; Keisuke Kojima; Kieran Parsons; Helmut Griesser (CoRR, 2020)

Huffman-coded Sphere Shaping and Distribution Matching Algorithms via Lookup Tables. - Tobias Fehenberger; David S. Millar; Toshiaki Koike-Akino; Keisuke Kojima; Kieran Parsons; Helmut Griesser (CoRR, 2020)

Parallel-Amplitude Architecture and Subset Ranking for Fast Distribution Matching. - Tobias Fehenberger; David S. Millar; Toshiaki Koike-Akino; Keisuke Kojima; Kieran Parsons (IEEE Trans. Commun., 2020)

Zero-Multiplier Sparse DNN Equalization for Fiber-Optic QAM Systems with Probabilistic Amplitude Shaping. - Toshiaki Koike-Akino; Ye Wang 001; Keisuke Kojima; Kieran Parsons; Tsuyoshi Yoshida (ECOC, 2021)

Dual Coding Concatenation for Burst-Error Correction in Probabilistic Amplitude Shaping. - Pavel Skvortcov; Toshiaki Koike-Akino; David S. Millar; Keisuke Kojima; Kieran Parsons (ECOC, 2021)

Experimental Analysis of Mismatched Soft-Demapping for Probabilistic Shaping in Short-Reach Nonlinear Transmission. - Pavel Skvortcov; David S. Millar; Ian D. Phillips; Wladek Forysiak; Toshiaki Koike-Akino; Keisuke Kojima; Kieran Parsons (ECOC, 2021)