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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| OFT, OPE, OCS (Joint) [detail] |
2025-02-21 14:40 |
Okinawa | (Okinawa) | Numerically evaluating performance of spectrally-slicing-and-synthesizing method for measurement of complex field waveforms of optical frequency combs Yuki Kawamura, Koji Igarashi (Osaka Univ.) |
[more] | |
| OFT, OCS, IEE-CMN, ITE-BCT, CQ (Joint) [detail] |
2024-11-07 14:35 |
Kochi | (Kochi) | Performance comparison of carrier phase recovery using temporal pilot symbols and frequency tones in mode division multiplexed transmission systems Mei Ogawa, Koji Igarashi (Osaka Univ.)  OCS2024-47 |
In mode division multiplexed (MDM) transmission systems, MIMO adaptive equalization is required to compensate for mode c... [more] | OCS2024-47 pp.19-24 |
| OPE, LQE, OCS | 2024-10-17 15:30 |
Yamaguchi | (Yamaguchi) | Frequency diversity of Q value due to interplay between mode dependent loss and differential mode delay in mode division multiplexed optical fiber transmission systems Hajime Kurumatani, Koji Igarashi (Osaka Univ.) OCS2024-33 OPE2024-86 LQE2024-33 |
In mode division multiplexed transmission systems, mode dependent loss (MDL) of multimode fibers (MMFs) and multimode ED... [more] | OCS2024-33 OPE2024-86 LQE2024-33 pp.47-52 |
| NS, PN, OCS (Joint) |
2024-06-07 13:45 |
Nagasaki | (Nagasaki, Online) (Primary: On-site, Secondary: Online) |
Parameter Optimization of MIMO Adaptive Equalization in Mode-multiplexed Transmission Systems Using Model-based Deep Learning Koji Igarashi (Osaka Univ) OCS2024-16 |
[more] | OCS2024-16 pp.41-46 |
| OCS, CS (Joint) |
2024-01-12 14:25 |
Kagoshima | (Kagoshima) | Polar code for reducing decoder complexity of soft-decision forward error correction Zhiyuan Song, Koji Igarashi (Osaka Univ.), Yohei Koganei (Fujitsu) OCS2023-65 |
For managing both to reduce the complexity of soft-decision forward error correction (FEC) and to attain fine tunability... [more] | OCS2023-65 pp.43-48 |
| OCS, OFT, IEE-CMN, ITE-BCT (Joint) [detail] |
2023-11-09 16:20 |
Kyoto | (Kyoto, Online) (Primary: On-site, Secondary: Online) |
Suppressing Instability of Adaptive Equalization Due to Mode-dependent Loss in Mode-division-multiplexed Transmission Systems Koji Igarashi (Osaka Univ.) OCS2023-43 |
[more] | OCS2023-43 pp.1-5 |
| OFT, OCS, LSJ (Joint) [detail] |
2023-08-25 11:20 |
Hokkaido | (Hokkaido, Online) (Primary: On-site, Secondary: Online) |
Real-time 114-SDM transmission over a 6-mode 19-core fiber using real-time MIMO DSP Shohei Beppu (KDDI Research), Masahiro Kikuta, Masahiro Shigihara (NEC Platforms), Koji Igarashi (Osaka University), Daiki Soma, Yuta Wakayama, Noboru Yoshikane (KDDI Research) OCS2023-25 |
Space-division multiplexing (SDM) transmission systems, in which multiple channels with different spatial paths are mult... [more] | OCS2023-25 pp.33-38 |
| SeMI, RCS, RCC, NS, SR (Joint) |
2023-07-13 13:50 |
Osaka | Osaka University Nakanoshima Center + Online (Osaka, Online) (Primary: On-site, Secondary: Online) |
A Study on Bayesian Receiver Design for Uplink MU-MIMO Systems with Carrier Frequency Offsets Kenta Ito, Takumi Takahashi, Koji Igarashi (Osaka Univ.), Koji Ishibashi (UEC), Shinsuke Ibi (Doshisha Univ.) RCS2023-93 |
This paper proposes a novel Bayesian receiver design to realize high-accuracy data detection under observations subject ... [more] | RCS2023-93 pp.70-75 |
| PN, NS, OCS (Joint) |
2023-06-09 09:50 |
Kagawa | (Kagawa, Online) (Primary: On-site, Secondary: Online) |
Characterization of Multistage Decoder with Channel Polarization to Reduce Computational Complexity of Soft-decision Forward Error Correction Zhiyuan song, Koji Igarashi (Osaka Univ.) OCS2023-17 |
[more] | OCS2023-17 pp.51-56 |
| OCS, OFT, OPE (Joint) [detail] |
2023-02-17 11:05 |
Okinawa | kukuru-itomancity (Okinawa, Online) (Primary: On-site, Secondary: Online) |
Designing Operation Parameters Using Deep Unfolding for MIMO Adaptive Equalization in Optical Coherent Transmission Systems Eidai Sunamoto, Koji Igarashi (Osaka Univ.) OCS2022-81 OPE2022-110 |
In the coherent optical transmission systems, adaptive control is required to suppress and compensate for laser phase no... [more] | OCS2022-81 OPE2022-110 pp.56-61(OCS), pp.81-86(OPE) |
| OCS, OFT, OPE (Joint) [detail] |
2023-02-17 11:30 |
Okinawa | kukuru-itomancity (Okinawa, Online) (Primary: On-site, Secondary: Online) |
Performance Degradation of MIMO Adaptive Equalization due to Mode-to-Mode Gain Deviation in Mode-division Multiplexed Optical Amplifiers Koji Igarashi (Osaka Univ.) OCS2022-82 OPE2022-111 |
[more] | OCS2022-82 OPE2022-111 pp.62-67(OCS), pp.87-92(OPE) |
| OCS, OFT, OPE (Joint) [detail] |
2023-02-17 14:35 |
Okinawa | kukuru-itomancity (Okinawa, Online) (Primary: On-site, Secondary: Online) |
Nonlinear wave equation for wavelength/polarization multiplexed signals in fiber transmission Kyo Inoue, Koji Igarashi (Osaka Univ.) OCS2022-87 OPE2022-116 |
Nonlinear fiber transmission has been usually described by the nonlinear Schrödinger or the Manakov equation. However, t... [more] | OCS2022-87 OPE2022-116 pp.86-90(OCS), pp.111-115(OPE) |
| ITE-BCT, OCS, IEE-CMN, OFT | 2022-11-11 14:15 |
Miyagi | Forest-Sendai (Miyagi, Online) (Primary: On-site, Secondary: Online) |
Time-resolve constellation monitoring of quadrature amplitude modulation optical signals with time-and-frequency slicing-and-synthesizing method Tsubasa Fujiwara, Koji Igarashi (Osaka Univ), Fumihiko Ito (Shimane Univ) OCS2022-47 |
In coherent transmission systems, we require simple constellation monitoring of quadrature amplitude modulation (QAM) op... [more] | OCS2022-47 pp.41-45 |
| OPE, OCS, LQE | 2022-10-21 12:55 |
Ehime | (Ehime, Online) (Primary: On-site, Secondary: Online) |
Laser frequency noise measurement using FPGA data acquisition with ultra-long period and high temporal resolution Koji Igarashi (Osaka Univ.) OCS2022-33 OPE2022-79 LQE2022-42 |
[more] | OCS2022-33 OPE2022-79 LQE2022-42 pp.86-89 |
| OCS, PN, NS (Joint) |
2022-06-10 13:00 |
Online | Online (Online) | Spectrally-Slicing-and-Synthesizing Measurement for Complex Field Waveforms of 100-GHz Optical Frequency Combs Yusuke Shimizu, Tsubasa Fujiwara, Koji Igarashi (Osaka Univ.) OCS2022-10 |
[more] | OCS2022-10 pp.1-5 |
| RCS | 2022-04-22 11:20 |
Osaka | Osaka University, and online (Osaka, Online) (Primary: On-site, Secondary: Online) |
A Study on Parametric Bilinear Inference via Gaussian Belief Propagation Kenta Ito, Takumi Takahashi, Koji Igarashi (Osaka Univ.), Shinsuke Ibi (Doshisha Univ.), Seiichi Sampei (Osaka Univ.) RCS2022-8 |
Parametric bilinear inference estimates two unknown varables (i.e., parameters) with a symmetric linear regression struc... [more] | RCS2022-8 pp.35-40 |
| OPE, OFT, OCS (Joint) [detail] |
2022-02-25 13:30 |
Online | Online (Online) | Measuring Jones matrices representing mode couplings in few mode fibers Ryotaro Fukunaga, Koji Igarashi (Osaka Univ.) OCS2021-50 OPE2021-65 |
The mode dispersion in few-mode fibers (FMFs) determines the transmission performance of the mode multiplexed systems. I... [more] | OCS2021-50 OPE2021-65 pp.46-50(OCS), pp.84-88(OPE) |
| PN, MWP, EMT, PEM, IEE-EMT [detail] | 2022-01-28 09:25 |
Online | Online (Online, Online) | Control of SDN optical networks using public cloud container services Hayato Kiwata, Koji Igarashi (Osaka Univ), Noboru Yoshikane (KDDI Research) PN2021-41 EMT2021-57 MWP2021-46 |
In this work, we propose a method for controlling SDN optical network using container virtualization in public cloud ser... [more] | PN2021-41 EMT2021-57 MWP2021-46 pp.46-50 |
| RCS, SIP, IT | 2022-01-20 17:20 |
Online | Online (Online) | A Study on AoA Estimation-Aided Bayesian Receiver Design via Bilinear Inference for mmWave Large MIMO Kenta Ito, Takumi Takahashi, Koji Igarashi (Osaka Univ.), Shinsuke Ibi (Doshisha Univ.), Seiichi Sampei (Osaka Univ.) IT2021-58 SIP2021-66 RCS2021-226 |
We propose a novel joint channel and data estimation (JCDE) scheme for mmWave large multi-user multi-input multi-output ... [more] | IT2021-58 SIP2021-66 RCS2021-226 pp.167-172 |
| OFT, OCS, IEE-CMN, ITE-BCT [detail] | 2021-11-19 10:00 |
Online | Online (Online) | Relationship between Polarization Mode Dispersion and Impulse Response Spread in Dual-polarization/Mode-multiplexed Coherent Transmission Systems Eidai Sunamoto, Ryotaro Fukunaga, Koji Igarashi (Osaka Univ.) OFT2021-51 |
In coherent optical fiber transmission systems with dual-polarization multiplexing and/or mode multiplexing, efficient d... [more] | OFT2021-51 pp.1-6 |
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