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All Technical Committee Conferences (Searched in: Recent 10 Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| RCS, SIP, IT | 2025-01-30 13:10 |
Yamaguchi | Kaikyou-messe (Yamaguchi, Online) (Primary: On-site, Secondary: Online) |
Underwater acoustic OFDM transmission scheme incorporating symbol synchronization and time-domain waveform compensation using cyclic prefix Haruya Ikeda, Yuki Oami, Shuji Nonaka (Tokyo Univ. of science), Daisuke Hisano (Osaka Univ.), Kazuki Maruta (Tokyo Univ. of science)  IT2024-62 SIP2024-101 RCS2024-245 |
In recent years, research has been conducted into wireless communications in places other than land, such as the sky, sp... [more] | IT2024-62 SIP2024-101 RCS2024-245 pp.208-213 |
| UWT (2nd) |
2024-11-19 12:45 |
Kagoshima | (Kagoshima) | A Study of Time Domain Waveform Compensation Techniques Using OFDM-CP for Underwater Acoustic Communications Haruya Ikeda, Yuki Oami, Shuji Nonaka (Tokyo Univ. of science), Daisuke Hisano (Osaka Univ.), Kazuki Maruta (Tokyo Univ. of science) |
Recent research into wireless communication in places other than land, such as the sky, space, and sea, has been progres... [more] | |
| US | 2024-02-27 15:25 |
Tokyo | Tokyo Metropolitan Industrial Technology Research Institute (TIRI) (Tokyo) | Generation of photoacoustic Chirp signal by gate-controlled laser irradiation and its performance validation Kazuyuki Nakahata, Kenta Yamauchi (Ehime Univ.), Takahiro Hayashi (Osaka Univ.) US2023-78 |
Ultrasonic waves generated in a solid by the photoacoustic effect of laser irradiation have a wide frequency range. Ther... [more] | US2023-78 pp.26-28 |
| OFT | 2024-01-19 11:10 |
Hyogo | (Hyogo, Online) (Primary: On-site, Secondary: Online) |
Study of chirp-division multiplexing in time-gated digital optical frequency domain reflectometry using a sinusoidally frequency-modulated light source Ichiki Tanimura, Masayuki Matsumoto (Wakayama Univ.) OFT2023-62 |
Time-Gated Digital Optical Frequency Domain Reflectometry (TGD-OFDR) uses frequency-chirped optical pulses with time wid... [more] | OFT2023-62 pp.31-34 |
| ITS, WBS, RCC | 2023-12-21 15:40 |
Okinawa | (Okinawa, Online) (Primary: On-site, Secondary: Online) |
Consideration of detection method combining beat frequency and correlation for ranging in LoRa systems Shoji Natsumi, Ono Kouhei (Meiji Univ) WBS2023-46 ITS2023-29 RCC2023-40 |
This paper discusses a ranging scheme using LoRa that uses narrower bandwidth chirp signal for finding lost objects in i... [more] | WBS2023-46 ITS2023-29 RCC2023-40 pp.92-97 |
| PN | 2023-08-30 11:40 |
Hokkaido | (Hokkaido, Online) (Primary: On-site, Secondary: Online) |
Reconfigurable All-Optical Logic Gate Using Quantum Dot Semiconductor Optical Amplifiers Taishi Takemoto, Yusuke Hatano, Motoharu Matsuura (UEC) PN2023-35 |
Recently, communication traffic has been increasing year by year, and the delay due to electrical signal processing in o... [more] | PN2023-35 pp.97-100 |
| PN | 2023-08-30 12:05 |
Hokkaido | (Hokkaido, Online) (Primary: On-site, Secondary: Online) |
Photonic Digital to Analog Conversion with Higher Resolution Using Frequency Chirping in Quantum Dot Semiconductor Optical Amplifiers Tetsuyuki Ito, Motoharu Matsuura (UEC) PN2023-36 |
As communication traffic capacity increases, there is a need for optical signal processing to support longer distance an... [more] | PN2023-36 pp.101-105 |
| SANE | 2022-05-24 10:30 |
Kanagawa | Information Technology R & D Center, MITSUBISHI Electric Corp. (Kanagawa, Online) (Primary: On-site, Secondary: Online) |
Proposal of Unambiguous Velocity Calculation and Range Measurement Accuracy Improvement Method for LPRF Radar Tetsuro Furuta, Satoshi Kageme (Mitsubishi Electric Corp.) SANE2022-4 |
LPRF (Low Pulse Repetition Frequency) radar is used to observe distant targets. While the range of unambiguous solvable ... [more] | SANE2022-4 pp.18-23 |
| PN | 2022-03-02 08:30 |
Online | Online (Online) | 40 Gbps Photonic Digital-to-Analog Conversion Using Frequency Chirp in a Semiconductor Optical Amplifier Masaki Sagara, Tetsuyuki Ito, Motoharu Matsuura (Univ. of Electro-Commun.) PN2021-66 |
In semiconductor optical amplifiers (SOAs), when an optical signal is amplified, frequency chirp is induced at the leadi... [more] | PN2021-66 pp.71-75 |
| PN | 2022-03-02 08:50 |
Online | Online (Online) | All-Optical Logic Gates Using Frequency Chirp in a Semiconductor Optical Amplifier Junichi Tsuda, Masaki Sagara, Taishi Takemoto, Motoharu Matsuura (Univ. of Electro-Commun) PN2021-67 |
Recently, with the demand for high-speed network, all-optical logic gate is an essential function for sup- porting high-... [more] | PN2021-67 pp.76-79 |
| SAT, SANE (Joint) |
2022-02-25 11:20 |
Online | Online (Online) | Expantion of swath width for a synthetic aperture radar with transmission frequency multiplexing Akihisa Uematsu, Toshiyuki Nishibori (JAXA) SANE2021-102 |
To realize wider swath width for spaceborne synthetic aperture radar (SAR), transmission frequency multiplexing method i... [more] | SANE2021-102 pp.26-30 |
| OFT | 2021-10-14 10:30 |
Online | Online (Online) | [Poster Presentation]
Mutual interference suppression for FMCW LiDAR Akifumi Soma, Shota Araishi, Sougo Shimizu, Chao Zhang, Fumihiko Ito (Shimane Univ.) OFT2021-27 |
In this article, we outline mutual interference in frequency-modulated continuous-wave LiDAR and proposes a suppression ... [more] | OFT2021-27 pp.23-28 |
| RCS | 2021-04-22 15:35 |
Online | Online (Online) | Pilotless Multipath Equalization for Chirp Spread Non-coherent FSK Yuta Hori, Masatsugu Higashinaka, Hiroshi Aruga (MELCO) RCS2021-8 |
In low power wide area (LPWA) systems such as LoRaWAN (Long Range Wide Area Network), a combination of frequency shift k... [more] | RCS2021-8 pp.30-35 |
| PN | 2021-03-01 17:50 |
Online | Online (Online) | [Invited Lecture]
20 Gbps Photonic Digital to Analog Conversion Using Frequency Chirp in a SOA Masaki Sagara, Takuya Okada, Wang Rui, Junichi Tsuda, Motoharu Matsuura (Univ. of Electro-Commun.) PN2020-49 |
In semiconductor optical amplifiers (SOAs), when an optical signal is amplified, the frequency chirp is induced at the l... [more] | PN2020-49 pp.46-50 |
| PN | 2020-08-24 10:05 |
Online | Online (Online) | 4-bit Photonic Digital-to-Analog Conversion Using a Frequency Chirp in a Semiconductor Optical Amplifier Masaki Sagara, Takuya Okada, Wang Rui, Motoharu Matsuura (Univ. of Electro-Commun.) PN2020-13 |
In semiconductor optical amplifiers (SOAs), when an optical signal is amplified, the frequency chirp is induced at the l... [more] | PN2020-13 pp.1-5 |
| PN | 2020-03-03 11:25 |
Kagoshima | (Kagoshima) (Cancelled but technical report was issued) |
Photonic digital-to-analog and analog-to-digital conversion based on frequency chirp in SOAs Takuya Okada, Wang Rui, Masaki Sagara, Motoharu Matsuura (UEC) PN2019-66 |
Frequency chirp is a unique phenomenon in semiconductor optical amplifiers (SOAs), and provides intensity-to-frequency c... [more] | PN2019-66 pp.81-85 |
| SANE | 2019-11-29 13:05 |
Osaka | OIT UMEDA Campus (Osaka) | Range Walk and Doppler Frequency Tolerant Frequency Division MIMO Radar Satoshi Kageme, Kazuaki Maniwa, Kei Suwa (Mitsubishi Electric Corp.) SANE2019-81 |
MIMO(Multi Input Multi Output) radar may significantly improve the radar performance on a number aspects by using multip... [more] | SANE2019-81 pp.61-66 |
| RISING (2nd) |
2019-11-26 10:30 |
Tokyo | Fukutake Learning Theater, Hongo Campus, Univ. Tokyo (Tokyo) | [Poster Presentation]
Photonic Analog-to-Digital and Digital-to-Analog Conversion Using Semiconductor Optical Amplifiers Takuya Okada, Ryuichi Kobayashi, Wang Rui, Masaki Sagara, Motoharu Matsuura (UEC) |
Frequency chirp is a unique phenomenon in semiconductor optical amplifiers (SOAs), and provides intensity-to-frequency c... [more] | |
| US | 2019-05-20 16:15 |
Tokyo | (Tokyo) | Improvement of degradation due to echo distortion of ultrasound range super-resolution imaging with carrier frequency sweep Nguyen Chi Hai, Norio Tagawa (Tokyo Metro. Univ.), Masasumi Yoshizawa (Tokyo Metro. College of Tech.), Takasuke Irie (Microsonic) US2019-15 |
We have implemented this study by evaluating the effect of two things on ultrasound imaging. The first one is proposing ... [more] | US2019-15 pp.31-34 |
| OFT | 2019-05-16 14:00 |
Osaka | Ｉ-site NANBA (Osaka) | [Poster Presentation]
Photonic Digital-to-Analog Conversion Using Frequency Chirp in a Quantum-Dot Semiconductor Optical Amplifier Takuya Okada, Ryuichi Kobayashi, Motoharu Matsuura (UEC) OFT2019-6 |
In this work, we propose a photonic digital-to-analog conversion (PDAC) based on frequency chirp using a SOA and followi... [more] | OFT2019-6 pp.25-28 |
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