Search Results - "Koshikawa, Shota"

Preventive Effect of an Intervention Program with Increased Physical Activity on the Development of Musculoskeletal Pain in Community-Dwelling Older Adults: A Randomized Controlled Trial by Hirase, Tatsuya, Inokuchi, Shigeru, Koshikawa, Shota, Shimada, Hinata, Okita, Minoru

“…Abstract Objective To examine whether compared with a program without increased physical activity, an intervention program with increased physical activity can…”
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Demonstration of a Real-Time 14 Tb/s Multi-Aperture Transmit Single-Aperture Receive FSO System With Class 1 Eye-Safe Transmit Intensity by Matsuda, Keisuke, Binkai, Masashi, Koshikawa, Shota, Yoshida, Tsuyoshi, Sano, Hayato, Konishi, Yoshiaki, Suzuki, Naoki

“…To achieve a link budget capable of supporting high capacity free space optical communication (FSO), a high transmit power is required. However, the…”
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Efficient Bit Labeling in Factorization Machines with Annealing for Traveling Salesman Problem by Koshikawa, Shota, Hosaka, Aruto, Yoshida, Tsuyoshi

“…To efficiently find an optimum parameter combination in a large-scale problem, it is a key to convert the parameters into available variables in actual…”
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Preconditioning for a Variational Quantum Linear Solver by Hosaka, Aruto, Yanagisawa, Koichi, Koshikawa, Shota, Kudo, Isamu, Alifu, Xiafukaiti, Yoshida, Tsuyoshi

“…We apply preconditioning, which is widely used in classical solvers for linear systems $A\textbf{x}=\textbf{b}$, to the variational quantum linear solver. By…”
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Field Demonstration of Real-time 14 Tb/s 220 m FSO Transmission with Class 1 Eye-safe 9-aperture Transmitter by Matsuda, Keisuke, Binkai, Masashi, Koshikawa, Shota, Yoshida, Tsuyoshi, Sano, Hayato, Konishi, Yoshiaki, Suzuki, Naoki

“…We demonstrated a 9-aperture transmit and single aperture receive FSO system transmitting 35-WDM 400 Gb/s DP-PS-16-QAM signals over 220 m. By splitting the WDM…”
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Interplay of Probabilistically Shaped Multilevel Coded Modulation and Fiber Nonlinearity Compensation by Yoshida, Tsuyoshi, Inoue, Takashi, Binkai, Masashi, Matsuda, Keisuke, Koshikawa, Shota, Konishi, Yoshiaki, Suzuki, Naoki

“…Transmission performance and decoding power consumption are investigated in coded modulation (CM) schemes. Probabilistically-shaped multilevel CM shows 21 or 9…”
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Fiber Coupling Loss Mitigation of Wavelength Division Multiplexed 20 Gb/s QPSK Signal with 3-Mode Fiber by Matsuda, Keisuke, Koshikawa, Shota, Yoshida, Tsuyoshi, Suzuki, Naoki

“…We evaluated fiber coupling loss mitigation by coupling light into a 3-mode fiber instead of a single mode fiber with 5 wavelength division multiplexed 4 Gb/s…”
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Multi-aperture Transmission and DSP Techniques for Beyond-10 Tb/s FSO Networks by Matsuda, Keisuke, Sano, Hayato, Takada, Yukari, Binkai, Masashi, Koshikawa, Shota, Yokomura, Yuta, Yoshida, Tsuyoshi, Konishi, Yoshiaki, Suzuki, Naoki

“…We present a real-time demonstration of 14 Tb/s transmission in 220 m outdoor FSO experiments with a 9-aperture transmit and single-aperture receive FSO…”
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Experimental Comparison of Pulse Position and Hamming-Coded Modulations for High Sensitivity Coherent FSO Communications by Matsuda, Keisuke, Koshikawa, Shota, Binkai, Masashi, Yoshida, Tsuyoshi, Suzuki, Naoki

“…We experimentally compared 4PPM-QPSK and Hamming-coded QPSK for coherent FSO applications with low symbol rates. Carrier recovery in 4PPM-QPSK works better…”
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Required and Received SNRs in Coded Modulation by Yoshida, Tsuyoshi, Igarashi, Koji, Binkai, Masashi, Chikamori, Shun, Mazur, Mikael, Schroder, Jochen, Matsuda, Keisuke, Koshikawa, Shota, Suzuki, Naoki, Karlsson, Magnus, Agrell, Erik

“…Coded modulation techniques aim at reducing the required signal-to-noise ratio (SNR) over the Gaussian channel with an average energy constraint; however, such…”
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FPGA implementation of distribution matching and dematching by Yoshida, T, Binkai, M, Koshikawa, S, Chikamori, S, Matsuda, K, Suzuki, N, Karlsson, M, Agrell, E

“…We implemented distribution matching and dematching (DM/invDM) on an FPGA in a back-to-back configuration, for the first time demonstrating very low BERs. At a…”
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