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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| 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 | 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 |
| 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 |
| ITE-BCT, OCS, IEE-CMN, OFT | 2022-11-11 14:15 |
Miyagi | Forest-Sendai (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 |
| PN | 2022-11-07 14:35 |
Kochi | (Primary: On-site, Secondary: Online) |
[Invited Talk]
Spot size converter having two stories employing anisotropic etching process Hajime Tanaka (SEI), Ryuji Yamabi (SEDI), Takamitsu Kitamura (SEDI/SEI), Hotino Kazuhiko (SEDI), Ishikawa Tsutomu (SEI), Mitsuru Ekawa (SEDI/SEI) PN2022-25 |
Coherent technology has been widely used from long haul to metro network. InP is a material having unique characteristic... [more] | PN2022-25 pp.22-27 |
| 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 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 |
| 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 | 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) |
2021-06-25 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 |
| SR | 2021-05-20 10:25 |
Online | Online | Energy Detection for M-QAM Signals Shun Ishihara, Kenta Umebayashi (TUAT), Janne Lehtomaki (UOO) SR2021-2 |
In this paper, we compare several analyses of energy detection for $M$-ary quadrature amplitude modulation (QAM) signals... [more] | SR2021-2 pp.8-15 |
| SAT, RCS (Joint) |
2020-08-21 16:25 |
Online | Online | Multi-level QAM Single Carrier Block Transmission Scheme for Acoustic Communications and Consideration of the Frame Structure Katsuyoshi Yamamoto, Hiroshi Kubo (Ritsumeikan Univ.) RCS2020-91 |
This paper discusses effective frame structure for single carrier block (SCB) transmission in a double selectivity envir... [more] | RCS2020-91 pp.69-74 |
| ITE-HI, IE, ITS, ITE-MMS, ITE-ME, ITE-AIT [detail] | 2020-02-28 13:30 |
Hokkaido | Hokkaido Univ. (Cancelled but technical report was issued) |
Basic experiment on single-shot detection of SQAM signal beam by transport-of-intensity equation method Soichiro Sumida, Masatoshi Bunsen (Fukuoka Univ.) |
Spatial quadrature amplitude modulation (SQAM) method which modulates intensity and phase of a signal beam, is a techniq... [more] | |
| ITE-HI, IE, ITS, ITE-MMS, ITE-ME, ITE-AIT [detail] | 2020-02-28 13:45 |
Hokkaido | Hokkaido Univ. (Cancelled but technical report was issued) |
Reproduction of SQAM signal for holographic memory and Estimation of recording density Satoshi Honma, Haruki Funakoshi (Yamanashi Univ.) |
Recording scheme of Spatial quadrature amplitude modulation (SQAM) signal whose amplitude and phase are individually mod... [more] | |
| IE, CS, IPSJ-AVM, ITE-BCT [detail] | 2019-12-05 17:45 |
Iwate | Aiina Center | [Special Invited Talk]
OFDM from the Digital Signal Processing Point of View
-- Upsampling Required Cases -- Hiromi Ueda (Tokyo Univ. of Technology) CS2019-80 IE2019-60 |
This paper presents two cases that upsampling is required for implementing Orthogonal Frequency Division Multiplexing (O... [more] | CS2019-80 IE2019-60 pp.75-82 |
| SR | 2019-12-06 11:15 |
Okinawa | Ishigaki City Hall (Ishigaki Island) | Energy Detection for M-QAM Signal Shun Ishihara, Kenta Umebayashi (TUAT), Janne Lehtomaki (UOO) SR2019-103 |
In this paper, we address energy detection for M-ary quadrature amplitude modulation (QAM) signal. Typically, statisti... [more] |
SR2019-103 pp.83-86 |
| RISING (2nd) |
2019-11-26 10:30 |
Tokyo | Fukutake Learning Theater, Hongo Campus, Univ. Tokyo | [Poster Presentation]
Energy detection for M-QAM signal Shun Ishihara, Kenta Umebayashi (TUAT), Janne Lehtomaki (UOO) |
In this presentation, we address energy detection for M-ary quadrature amplitude modulation (QAM) signal. Typically, sta... [more] | |
| NS, IN, CS, NV (Joint) |
2019-09-06 14:55 |
Miyagi | Research Institute of Electrical Communication, Tohoku Univ. | A study on high efficiency phase shift keying on 4-dimensional Euclidean space Sho Kakuwa, Masahiro Fujii (Utsunomiya Univ.) CS2019-60 |
Symbol mappings in two-dimensional Euclidean signal space, such as PSK and QAM, have a limitation of possible distance b... [more] | CS2019-60 pp.69-73 |
| LQE, OPE, CPM, EMD, R | 2019-08-22 13:30 |
Miyagi | [Invited Talk]
Progress of InP-based Monolithically Integrated Photonic Devices and Future Prospect Towards Beyond Tbps Era Hideki Yagi (SEI) R2019-20 EMD2019-18 CPM2019-19 OPE2019-47 LQE2019-25 |
InP-based photonic devices have yielded the monolithic integration of various functionalities in addition to miniaturi... [more] |
R2019-20 EMD2019-18 CPM2019-19 OPE2019-47 LQE2019-25 pp.5-9 |
|
| MRIS, ITE-MMS | 2019-07-19 13:50 |
Tokyo | Kogakuin Univ. | SQAM signal recording by two-step exposure method using interleaved phase page for holographic memories Satoshi Honma, Haruki Funakoshi (Yamanashi Univ.) MRIS2019-10 |
Spatial quadrature amplitude modulation (SQAM) signal whose amplitude and phase are individually modulated to multi-leve... [more] | MRIS2019-10 pp.11-16 |
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