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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 53  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
PN 2022-08-30
09:50
Hokkaido
(Primary: On-site, Secondary: Online)
Study of time resource allocation and route selection for dedicated and hierarchical shared link switchable point-to-multipoint NW
Yuta Kimura, Mizuki Inagaki, Takahiro Kodama (Kagawa Univ.)
 [more]
PN 2022-08-30
10:50
Hokkaido
(Primary: On-site, Secondary: Online)
Experimental study 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.)
 [more]
PN 2022-03-01
15:40
Online Online [Invited Talk] Experimental demonstration of Ultra-Wideband and Ultrawide Bandwidth-range Optical Channel Provisioning Using SDM/WDM Hierarchical Optical Cross Connect
Itsuki Urashima, Tsubasa Ishikawa, Takahiro Kodama, Yudai Uchida, Masahiko Jinno (Kagawa Univ.) PN2021-63
 [more] PN2021-63
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
PN 2022-03-02
13:00
Online Online An indoor experiment of 1m class short-reach visible optical wireless communication using seawater of the Seto Inland Sea as an underwater transmission line
Keita Tanaka, Fumiya Kobori, Tomoya Nakagawa, Momoka Masaoka, Ayumu Kariya, Tomoya Ishikawa, Shota Eguchi, Takahiro Kodama (Kagawa Univ.) PN2021-76
In this time, to simulate the underwater transmission line in the natural environment in underwater optical wireless com... [more] PN2021-76
pp.129-133
PN 2022-03-02
15:10
Online Online Experimental study of all double link failure tolerant path pair shared protection for fully coupled/half-split switchable point-to-multipoint optical NW
Tomoya Nakagawa, Mizuki Inagaki, Takahiro Kodama (Kagawa Univ.) PN2021-82
A more reliable point-to-multipoint optical communication network is required in the mobile fronthaul of Beyond 5G, whic... [more] PN2021-82
pp.156-161
PN 2022-03-02
15:55
Online Online Application of polarization-independent subtractive interference cancellation algorithm for same-band and bidirectional coherent communication
Mizuki Inagaki, Takahiro Kodama (Kagawa Univ.) PN2021-84
When a single core and the same band bidirectional transmission is performed in a passive optical network (PON) for mobi... [more] PN2021-84
pp.169-173
PN 2022-03-02
16:35
Online Online Evaluation of the optimum modulation arrangement in a time frame for TDHP signal with same generation ratio of PAM2/PAM4
Fumiya Kobori, Keita Tanaka, Takahiro Kodama (Kagawa Univ.) PN2021-86
For underwater optical wireless communication system using the visible light wavelength band single-carrier-method, whic... [more] PN2021-86
pp.180-184
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
OCS, CS
(Joint)
2022-01-14
11:25
Yamaguchi Conference room 204A・B at KDDI Ishin-hall
(Primary: On-site, Secondary: Online)
Application Study of Downlink Coherent Method and Uplink SIMO Reception in TWDM-PON System with Link Redundancy
Tomoya Nakagawa (Kagawa Univ.), Ryosuke Matsumoto (AIST), Takahiro Kodama (Kagawa Univ.) OCS2021-37
A 40 Gbit/s class time division multiple access passive optical network (TWDM-PON: Time and wavelength division multiple... [more] OCS2021-37
pp.22-27
PN 2021-08-31
14:50
Online Online Evaluation of power adaptive IQ multiplexed 16QAM method for downlink transmission of coherent PON system
Mizuki Inagaki (Kagawa Univ.), Ryosuke Matsumoto (AIST), Takahiro Kodama (Kagawa Univ.) PN2021-24
In the downlink transmission of a coherent PON system using QAM modulation, when IQ multiplexing, which allocates I-axis... [more] PN2021-24
pp.69-73
PN, NS, OCS
(Joint)
2021-06-24
10:45
Online Online Study of underwater optical wireless communication system using data-rate adaptive time-domain hybrid PAM
Kobori Fumiya, Muhamad Aizat, Keita Tanaka (Kagawa Univ.), Yoshiaki Inoue (Osaka Univ.), Tomotaka Kimura (Doshisha Univ.), Masahiko Jinno, Takahiro Kodama (Kagawa Univ.) PN2021-4
To increase the variable transmission capacity of the underwater optical wireless communication system using the visible... [more] PN2021-4
pp.1-6
PN, NS, OCS
(Joint)
2021-06-24
11:35
Online Online Ultra-wideband and low-loss five-core 1X8 core selective switch
Itsuki Urashima, Tsubasa Ishikawa, Takahiro Kodama, Yudai Uchida, Masahiko Jinno (Kagawa Univ.) PN2021-6
We design and construct a prototype of a five core 1×8 core selective switch (CSS) employing multi-core fiber collimator... [more] PN2021-6
pp.13-18
PN, NS, OCS
(Joint)
2021-06-25
15:25
Online Online Full-coupling or half-split switchable point-to-multipoint optical transmission system
Tomoya Nakagawa, Tetsuji Goto (Kagawa Univ.), Ryosuke Matsumoto (AIST), Takahiro Kodama (Kagawa Univ.) OCS2021-7
Recently, a point-to-multipoint network configuration with disaster resistance is required in the mobile front hall conn... [more] OCS2021-7
pp.29-34
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
PN 2021-04-26
15:05
Online Online [Invited Talk] Toward an Optimal Design of Underwater Optical Wireless Networks -- Mathematical Modeling and Theoretical Analysis --
Yoshiaki Inoue (Osaka Univ.), Takahiro Kodama (Kagawa Univ.), Tomotaka Kimura (Doshisha Univ.) PN2021-3
 [more] PN2021-3
pp.14-20
OCS, CS
(Joint)
2021-01-14
14:20
Online Online Study of the Effect of Single Near-end Reflection on Bidirectional Transmission of QPSK/OOK Asymmetrically Modulated Signals in the Same Bandwidth
Tetsuji Goto, Takahiro Kodama, Masahiko Jinno (Kagawa Univ.) OCS2020-29
In recent years, PON systems for mobile front halls are required to have a larger capacity due to wireless terminal base... [more] OCS2020-29
pp.12-17
RCS, AP, UWT
(Joint)
2020-11-26
11:45
Online Online [Invited Lecture] Undersea optical wireless communication technology and its expansion to novel networks
Takahiro Kodama (Kagawa Univ.), Yoshiaki Inoue (Osaka Univ.), Tomotaka Kimura (Doshisya Univ.) AP2020-87 RCS2020-126
Research and development of underwater optical wireless communication, which is excellent in large-capacity communicatio... [more] AP2020-87 RCS2020-126
pp.78-82(AP), pp.93-97(RCS)
PN 2020-11-10
09:30
Online Online Research Trends for Fiscal Year 2019 in Technical Committee on Photonic Network -- Control, Management, and Application --
Masahiro Nakagawa (NTT), Motoharu Matsuura (UEC), Takahiro Kodama (Kagawa univ.), Kenji Ishii (Mitsubishi Electric Corp.) PN2020-23
 [more] PN2020-23
pp.1-6
PN 2020-11-10
09:55
Online Online Research Trends for Fiscal Year 2019 in Technical Committee on Photonic Network -- System, Architecture, and Device --
Motoharu Matsuura (UEC), Masahiro Nakagawa (NTT), Kenji Ishii (Mitsubishi Electric Corp.), Takahiro Kodama (Kagawa univ.) PN2020-24
 [more] PN2020-24
pp.7-12
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