| Burst-mode digital signal processing that pre-calculates FIR filter coefficients for digital coherent PON upstream R Koma, M Fujiwara, JI Kani, KI Suzuki, A Otaka Journal of Optical Communications and Networking 10 (5), 461-470, 2018 | 46 | 2018 |
| Demonstration of real-time burst-mode digital coherent reception with wide dynamic range in DSP-based PON upstream R Koma, M Fujiwara, J Kani, SY Kim, T Suzuki, KI Suzuki, A Otaka Journal of Lightwave Technology 35 (8), 1392-1398, 2016 | 36 | 2016 |
| Long-reach and high-splitting-ratio WDM/TDM-PON systems using burst-mode automatic gain controlled SOAs M Fujiwara, R Koma Journal of Lightwave Technology 34 (3), 901-909, 2016 | 27 | 2016 |
| Wide dynamic range burst-mode digital coherent detection using fast ALC-EDFA and pre-calculation of FIR filter coefficients R Koma, M Fujiwara, J Kani, KI Suzuki, A Otaka Optical Fiber Communication Conference, M3C. 6, 2016 | 25 | 2016 |
| Efficient wireless power transmission based on position sensing using magnetic resonance coupling S Nakamura, R Koma, H Hashimoto SICE Journal of Control, Measurement, and System Integration 5 (3), 153-161, 2012 | 16 | 2012 |
| Bidirectional EDFAs that support E2-class power budget of TWDM-PON without using gain-clamped light source M Fujiwara, R Koma, KI Suzuki, A Otaka Journal of Lightwave Technology 34 (8), 1997-2004, 2016 | 12 | 2016 |
| Basic analysis of the circuit model using relay antenna in magnetic resonance coupling position sensing system R Koma, S Nakamura, S Ajisaka, H Hashimoto 2011 IEEE/ASME International Conference on Advanced Intelligent Mechatronics …, 2011 | 11 | 2011 |
| Wide range carrier frequency offset estimation method using training symbols with asymmetric constellations for burst-mode coherent reception R Koma, M Fujiwara, R Igarashi, T Kanai, J Kani, A Otaka Optical fiber communication conference, M3B. 5, 2018 | 10 | 2018 |
| Fast feed-forward optical and electrical gain control to extend the dynamic range of the burst-mode digital coherent receiver for high-speed TDM-PON systems R Koma, M Fujiwara, J Kani, T Yoshida Journal of Lightwave Technology 40 (3), 647-654, 2021 | 9 | 2021 |
| Symmetric 10 Gbit/s 40-km reach DSP-based TDM-PON with a power budget over 50 dB T Kanai, M Fujiwara, R Igarashi, N Iiyama, R Koma, J Kani, T Yoshida Optics Express 29 (11), 17499-17509, 2021 | 9 | 2021 |
| High-splitting-ratio WDM/TDM-PONs using automatic gain controlled SOAs designed for central office use M Fujiwara, R Koma, K Taguchi 2015 Optical Fiber Communications Conference and Exhibition (OFC), 1-3, 2015 | 9 | 2015 |
| 22-dB dynamic range, real-time burst-mode reception of digital coherent 20-Gb/s QPSK PON upstream signals R Koma, M Fujiwara, J Kani, SY Kim, T Suzuki, H Mori, T Wada, KI Suzuki, ... ECOC 2016; 42nd European Conference on Optical Communication, 1-3, 2016 | 8 | 2016 |
| Pinpoint wireless power transformation system using reflection coefficient in magnetic resonance coupling S Nakamura The 7th International Conference on Ubiquitous Robots and Ambient …, 2010 | 8 | 2010 |
| Wireless near-field position sensing system using reflection coefficient in magnetic resonance coupling R Koma Proc. of the 7th International Conf. on Ubiquitous Robotics and Ambient …, 2010 | 8 | 2010 |
| Simultaneous reception of AMCC signals and QPSK signals by a single coherent receiver with DSP R Igarashi, R Koma, K Hara, J Kani, T Yoshida Optics Express 30 (26), 48030-48041, 2022 | 7 | 2022 |
| Performance evaluation of CPFSK transmitters for TDM-Based digital coherent PON upstream M Fujiwara, R Koma, J Kani, KI Suzuki, A Otaka Optical Fiber Communication Conference, Th1K. 5, 2017 | 7 | 2017 |
| Standardization trends for future high-speed passive optical networks K Ryo, K Jun-ichi, A Kota, S Ken-Ichi NTT Technical Review 15 (10), 60-64, 2017 | 7 | 2017 |
| Burst frame power equalizer that controlling gains of cascaded SOAs for long-reach WDM/TDM PON systems M Fujiwara, R Koma, N Yoshimoto 39th European Conference and Exhibition on Optical Communication (ECOC 2013 …, 2013 | 7 | 2013 |
| Wide-Range Frequency Offset Compensation for CPFSK used as TDM-Based Digital Coherent PON's Upstream Signals T Kanai, M Fujiwara, R Koma, R Igarashi, N Iiyama, J Kani, A Otaka 2018 European Conference on Optical Communication (ECOC), 1-3, 2018 | 6 | 2018 |
| 磁界共振結合を用いた距離センサの提案とその誤差評価 中村壮亮， 胡間遼， 久保田孝， 橋本秀紀 電気学会論文誌 D (産業応用部門誌) 132 (3), 437-444, 2012 | 6 | 2012 |
