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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| PN | 2024-03-14 11:10 |
Kagoshima | (Primary: On-site, Secondary: Online) |
100 GBaud Superchannel Transmission Experiment in CTR Mode Keiji Shimada (Kagawa Univ.), Ryosuke Matsumoto (AIST), Takahiro Kodama (Kagawa Univ.)  PN2023-69 |
We evaluated encryption penalty associated with symbolic block cipher applied CTR mode for 100 GBaud QAM signal by simul... [more] | PN2023-69 pp.1-5 |
| PN | 2024-03-15 09:00 |
Kagoshima | (Primary: On-site, Secondary: Online) |
Research on QAM symbol block cipher using space-time digital key transformation Reika Suketomo, Keiji Shimada (Kagawa Univ.), Ryosuke Matsumoto (AIST), Takahiro Kodama (Kagawa Univ.) PN2023-76 |
We have shown by simulation that a spatial-temporal spreading key encryption with spatial digital key transformation(DKX... [more] | PN2023-76 pp.37-41 |
| PN | 2024-03-15 16:10 |
Kagoshima | (Primary: On-site, Secondary: Online) |
A Study of Coherent Downstream Transmission of Adaptive Polarization and IQ Multiplexed Signals with Asymmetric Number of Signal Points and Amplitude Yuika Mori, Keiji Shimada, Takahiro Kodama (Kagawa Univ.) PN2023-92 |
We have already reported downlink transmission using IQ multiplexed 4ASK signals with power loading for the difference i... [more] | PN2023-92 pp.127-130 |
| UWT (2nd) |
2023-11-27 13:45 |
Shiga | Ritsumeikan University Biwako-Kusatsu Campus (BKC) | DC-biased time-domain hybrid PAM signal for visible light band spatial optical wireless communication Hodaka Amano, Ayumu Kariya, Tomoya Ishikawa, Fumiya Kobori, Keita Tanaka, Keiji shimada, Reika Suketomo, Yuika Mori, Takahiro Kodama (Kagawa Univ.) |
[more] | |
| OCS, LQE, OPE | 2023-10-19 11:20 |
Kochi | (Primary: On-site, Secondary: Online) |
Kalman Filter Directive Frequency Control for Frequency Domain Hybrid Asymmetric QAM Subband Signals under Tight WSS Passband Narrowing Keita Tanaka, Momoka Masaoka, Keiji Shimada, Takahiro Kodama (Kagawa Univ.) OCS2023-28 OPE2023-83 LQE2023-30 |
[more] | OCS2023-28 OPE2023-83 LQE2023-30 pp.11-15 |
| PN | 2023-08-29 10:05 |
Hokkaido | (Primary: On-site, Secondary: Online) |
Optical fiber long-distance multi-repeater transmission experiment of phase-shifted symbol-preserving encrypted polarization-multiplexed QAM signals Reika Suketomo, Yuika Mori, Hodaka Amano, Keiji Shimada (Kagawa Univ.), Ryosuke Matsumoto (AIST), Takahiro Kodama (Kagawa Univ.) PN2023-16 |
We have demonstrated that phase-shifted symbol-preserving encryption does not cause excessive degradation in 7 ch WDM 32... [more] | PN2023-16 pp.1-5 |
| PN | 2023-08-29 10:30 |
Hokkaido | (Primary: On-site, Secondary: Online) |
Polarization and IQ multiplexing 4ASK downlink transmission experiment of P-to-MP system using phase shift symbol preserved encryption Yuika Mori, Reika Suketomo, Hodaka Amano, Keiji Shimada (Kagawa Univ.), Ryosuke Matsumoto (AIST), Takahiro Kodama (Kagawa Univ.) PN2023-17 |
We have already reported downlink transmission using adaptive IQ imbalanced 4ASK signal for groups of ONUs with differen... [more] | PN2023-17 pp.6-10 |
| PN | 2023-08-30 09:50 |
Hokkaido | (Primary: On-site, Secondary: Online) |
Comparative study of various signals with the same transmission capacity under WSS tight passband narrowing. Hodaka Amano, Keita Tanaka, Keiji Shimada, Takahiro Kodama (Kagawa Univ.) PN2023-31 |
[more] | PN2023-31 pp.78-81 |
| PN | 2023-08-30 10:15 |
Hokkaido | (Primary: On-site, Secondary: Online) |
Kalman Filter Directive Frequency Control for Same Modulation Dual Subband Signals under Tight WSS Passband Narrowing Keita Tanaka, Momoka Masaoka, Keiji Shimada, Ken'ichi Fujimoto, Takahiro Kodama (Kagawa Univ.) PN2023-32 |
[more] | PN2023-32 pp.82-87 |
| CS, CQ (Joint) |
2023-05-18 13:50 |
Kagawa | Rexxam Hall (Kagawa Kenmin Hall) (Primary: On-site, Secondary: Online) |
A Study on Light Source Frequency Control by Kalman Filter Applying Polarity Reversal by Q-factor Degradation Threshold Keita Tanaka, Momoka Masaoka, Keiji Shimada, Ken'ichi Fujimoto, Takahiro Kodama (Kagawa Univ) CS2023-4 |
[more] | CS2023-4 pp.15-19 |
| CS, CQ (Joint) |
2023-05-19 16:05 |
Kagawa | Rexxam Hall (Kagawa Kenmin Hall) (Primary: On-site, Secondary: Online) |
Demonstration of IQ channel multiplexing coherent polarization multiplexing 4ASK signal in downlink transmission with distance difference in access span Keiji Shimada, Mizuki Inagaki (Kagawa Univ), Ryosuke Matsumoto (AIST), Takahiro Kodama (Kagawa Univ) CS2023-16 |
In the coherent PON system, the transmission distance from each optical network unit to the optical line terminal is dif... [more] | CS2023-16 pp.47-50 |
| PN | 2023-03-02 13:40 |
Okinawa | (Primary: On-site, Secondary: Online) |
Study of Constellation-Preserving Simple Symbol Encryption Using a Time-Spread Encryption Key Hodaka Amano, Keiji Shimada, Takahiro Kodama (Kagawa Univ.) PN2022-62 |
We study a constellation-preserving symbol encryption M-QAM scheme in which the symbol arrangement containing data is re... [more] | PN2022-62 pp.106-111 |
| PN | 2023-03-02 14:20 |
Okinawa | (Primary: On-site, Secondary: Online) |
A Study on Laser Frequency Control Using Kalman Filter to Avoid Excessive Bandwidth Narrowing Keita Tanaka, Momoka Masaoka, Keiji Shimada, Ken'ichi Fujimoto, Takahiro Kodama (Kagawa Univ.) PN2022-64 |
[more] | PN2022-64 pp.119-124 |
| OCS, CS (Joint) |
2023-01-13 15:10 |
Fukuoka | CANAL CITY HAKATA (Primary: On-site, Secondary: Online) |
An eavesdropping model for constellation-preserving simple symbol encryption and its evaluation Keiji Shimada, Takahiro Kodama (Kagawa Univ.) OCS2022-67 |
We have proposed constellation-preserving simple symbol encryption that keeps the arrangement of symbol points containin... [more] | OCS2022-67 pp.39-44 |
| CS, IE, IPSJ-AVM, ITE-BCT [detail] | 2022-11-25 15:00 |
Aichi | Nagoya Institute of Technology (Primary: On-site, Secondary: Online) |
Experiment of Real-time Full-duplex Transmission by LED Backhaul® for Aerial and Underwater Invisible Light Communication System Keita Tanaka, Ayumu Kariya, Fumiya Kobori, Keiji Shimada (Kagawa Univ.), Shogo Hayashida (Sangikyo Corp.), Takahiro Kodama (Kagawa Univ.) CS2022-61 IE2022-49 |
[more] | CS2022-61 IE2022-49 pp.68-73 |
| PN | 2022-08-30 10:50 |
Hokkaido | (Primary: On-site, Secondary: Online) |
Experimental of Symbol-rate-adaptive Multi-band Coherent Transceiver Momoka Masaoka, Takahiro Kodama, Keiji Shimada (Kagawa Univ.), Ryosuke Matsumoto, Takashi Inoue, Shu Namiki (AIST), Masahiko Jinno (Kagawa Univ.) PN2022-18 |
[more] | PN2022-18 pp.54-59 |
| PN | 2022-03-02 09:50 |
Online | Online | Initial study of pseudo-phase noise-based symbol masked polarization-multiplexed M-QAM signal using a time-spreading encryption key Keiji Shimada, Mizuki Inagaki, Takahiro Kodama (Kagawa Univ.) PN2021-70 |
In recent years, a common key cryptosystem for the physical layer has been introduced in digital signals to keep the dat... [more] | PN2021-70 pp.92-97 |
| OCS, CS (Joint) |
2022-01-14 11:00 |
Yamaguchi | Conference room 204A・B at KDDI Ishin-hall (Primary: On-site, Secondary: Online) |
Study of the Amount of Mutual Information of Secure Polarization Multiplexed M-QAM Signal with Symbol Placement Retention Masking Method Keiji Shimada, Mizuki Inagaki, Takahiro Kodama (Kagawa Univ.) OCS2021-36 |
In recent years, optical communication transceivers have been required to have high confidentiality for data. A shared k... [more] | OCS2021-36 pp.16-21 |
| PN, NS, OCS (Joint) |
2021-06-25 15:50 |
Online | Online | Study of the Effect on Soft-decision Decoding of the Coherent M-QAM using Multi-stage symbol Placement Retention Masking Keiji Shimada, Masahiro Misumi, Takahiro Kodama (Kagawa Univ.) OCS2021-8 |
In recent digital coherent optical communication systems, to keep data highly confidential, research is being conducted ... [more] | OCS2021-8 pp.35-39 |
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