Frequency-domain equalization aided iterative detection of faster-than-Nyquist signaling with noise whitening. - Takumi Ishihara; Shinya Sugiura (ICC, 2016)

Dual-Mode Time-Domain Index Modulation for Nyquist-Criterion and Faster-Than-Nyquist Single-Carrier Transmissions. - Miyu Nakao; Takumi Ishihara; Shinya Sugiura (IEEE Access, 2017)

State-of-the-Art Design of Index Modulation in the Space, Time, and Frequency Domains: Benefits and Fundamental Limitations. - Shinya Sugiura; Takumi Ishihara; Miyu Nakao (IEEE Access, 2017)

Single-Carrier Frequency-Domain Equalization With Index Modulation. - Miyu Nakao; Takumi Ishihara; Shinya Sugiura (IEEE Commun. Lett., 2017)

Iterative Frequency-Domain Joint Channel Estimation and Data Detection of Faster-Than-Nyquist Signaling. - Takumi Ishihara; Shinya Sugiura (IEEE Trans. Wirel. Commun., 2017)

Faster-Than-Nyquist Signaling With Index Modulation. - Takumi Ishihara; Shinya Sugiura (IEEE Wirel. Commun. Lett., 2017)

Faster-Than-Nyquist Signaling with Differential Encoding and Non Coherent Detection. - Takumi Ishihara; Shinya Sugiura (ICASSP, 2018)

Differential Faster-Than-Nyquist Signaling. - Takumi Ishihara; Shinya Sugiura (IEEE Access, 2018)

Optimal and Suboptimal Power Allocation for SVD-Precoded Faster-than-Nyquist Signaling. - Takumi Ishihara; Shinya Sugiura (VTC Fall, 2019)

Differentially Modulated Spectrally Efficient Frequency-Division Multiplexing. - Seichiroh Osaki; Miyu Nakao; Takumi Ishihara; Shinya Sugiura (IEEE Signal Process. Lett., 2019)

Performance Analysis and Constellation Optimization of Star-QAM-Aided Differential Faster-Than-Nyquist Signaling. - Chie Sagayama; Takumi Ishihara; Shinya Sugiura (IEEE Signal Process. Lett., 2019)

SVD-Precoded Faster-Than-Nyquist Signaling With Optimal and Truncated Power Allocation. - Takumi Ishihara; Shinya Sugiura (IEEE Trans. Wirel. Commun., 2019)

Effects of Eigenvalue Distribution on Precoded Faster-than-Nyquist Signaling with Power Allocation. - Keita Masaki; Takumi Ishihara; Shinya Sugiura (VTC Fall, 2020)

Non-Orthogonal Frequency-Division Multiplexing Based on Eigenvalue Decomposition. - Seichiroh Osaki; Takumi Ishihara; Shinya Sugiura (VTC Fall, 2020)

Tradeoff Between Calculation Precision and Information Rate in Eigendecomposition-Based Faster-Than-Nyquist Signaling. - Keita Masaki; Takumi Ishihara; Shinya Sugiura (IEEE Access, 2020)

Variable-Block-Length Joint Channel Estimation and Data Detection for Spatial Modulation Over Time-Varying Channels. - Yuya Akiba; Takumi Ishihara; Shinya Sugiura (IEEE Trans. Veh. Technol., 2020)

Eigenvalue-Decomposition-Precoded Ultra-Dense Non-Orthogonal Frequency-Division Multiplexing. - Seichiroh Osaki; Takumi Ishihara; Shinya Sugiura (IEEE Trans. Wirel. Commun., 2020)

Precoded Faster-than-Nyquist Signaling with Optimal Power Allocation in Frequency-Selective Channel. - Takumi Ishihara; Shinya Sugiura (ICC Workshops, 2021)

Eigenvalue Decomposition Precoded Faster-Than-Nyquist Transmission of Index Modulated Symbols. - Prakash Chaki; Takumi Ishihara; Shinya Sugiura (ISIT, 2021)

The Evolution of Faster-Than-Nyquist Signaling. - Takumi Ishihara; Shinya Sugiura; Lajos Hanzo (IEEE Access, 2021)

FFT-Spread Faster-Than-Nyquist Signaling in Frequency-Selective Fading Channel. - Takumi Ishihara; Shinya Sugiura (ICC, 2022)

Precoded Non-Orthogonal Frequency Division Multiplexing with Subcarrier Index Modulation. - Prakash Chaki; Takumi Ishihara; Shinya Sugiura (VTC Spring, 2022)

Reduced-Complexity FFT-Spread Multicarrier Faster-Than-Nyquist Signaling in Frequency-Selective Fading Channel. - Takumi Ishihara; Shinya Sugiura (IEEE Open J. Commun. Soc., 2022)

Eigendecomposition-Precoded Faster-Than-Nyquist Signaling With Index Modulation. - Prakash Chaki; Takumi Ishihara; Shinya Sugiura (IEEE Trans. Commun., 2022)

Eigendecomposition-Precoded Faster-Than-Nyquist Signaling With Optimal Power Allocation in Frequency-Selective Fading Channels. - Takumi Ishihara; Shinya Sugiura (IEEE Trans. Wirel. Commun., 2022)

Precoded Faster-Than-Nyquist Signaling for Doubly Selective Underwater Acoustic Communication Channel. - Jingwen Zhou; Takumi Ishihara; Shinya Sugiura (IEEE Wirel. Commun. Lett., 2022)

Precoded Filterbank Multicarrier Index Modulation With Non-Orthogonal Subcarrier Spacing. - Prakash Chaki; Takumi Ishihara; Shinya Sugiura (IEEE Trans. Commun., 2023)

Various gait pattern generation and analysis of semi-passive quadruped walker with telescopic knee based on phase oscillator. - Shoichi Miwa; Tetsuya Kinugasa; Kii Oba; Takumi Ishihara; Jialun Zhang; Ryota Hayashi; Koji Yoshida (Artif. Life Robotics, 2023)

Differential Multi-Carrier Faster-Than-Nyquist Signaling in Doubly Selective Fading Channel. - Takumi Ishihara; Shinya Sugiura (IEEE Trans. Veh. Technol., 2024)