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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| OFT | 2016-10-13 16:50 |
Iwate | MALIOS (Morioka City) | Analysis of wavelength-dependent modal group-delay characteristics of coupled 3-core optical fibers Kishi, Naoto, Tamura, Hiroki, Nakayama, Keisuke (UEC)  OFT2016-21 |
Coupled-modes for symmetrically distributed 3-core fibers are numerically analyzed by using point-matching method with ... [more] |
OFT2016-21 pp.21-24 |
| OCS, OFT, LSJ (Joint) [detail] |
2016-08-26 10:20 |
Hokkaido | Chitose-alcadia plaza | Evaluation for Wavelength Dependence of DMD in a 10-Mode Fiber with Low-Coherence Interferometry Yuta Wakayama, Daiki Soma (KDDI R&D Labs.), Koji Igarashi (Osaka Univ.), Hidenori Taga, Takehiro Tsuritani (KDDI R&D Labs.) OCS2016-32 |
In a mode-division multiplexing (MDM) transmission system, transmission performance considerably depends on differential... [more] | OCS2016-32 pp.39-42 |
| OFT, OCS, OPE (Joint) [detail] |
2016-02-18 13:30 |
Okinawa | Okinawa Univ. | Measurement of Mode Field Diameter in a Few-Mode Fiber with Low-Coherence Digital Holography Yuta Wakayama, Hidenori Taga, Takehiro Tsuritani (KDDI R&D Lab.) OCS2015-102 OPE2015-222 |
Mismatching of mode field diameter (MFD) between input/output devices for few-mode fibers (FMFs) causes mode-dependent l... [more] | OCS2015-102 OPE2015-222 pp.13-16(OCS), pp.39-42(OPE) |
| SP | 2016-01-14 15:35 |
Kanagawa | Sunpian Kawasaki | Pitch-synchronous band group delay vocoder for high quality speech synthesis Masatsune Tamura, Ryo Morinaka, Masahiro Morita (Toshiba) SP2015-91 |
This paper presents a speech analysis and synthesis method that can precisely synthesize speech waveforms for high quali... [more] | SP2015-91 pp.33-38 |
| OFT | 2015-12-11 14:50 |
Tokyo | The University of Electro-Communications (Tokyo) | Wavelength dependence of stress-induced time of flight variations in fibers by using the newly proposed measurement method. Takuya Kawashima (Shibaura Inst. of Tech.), Norio Kasahima, Tsuneo Horiguchi (Shibaura Inst. of Tech.) OFT2015-49 |
We have been studied parallel transmission systems using fiber-ribbons for a purpose of ultra-high-speed network in futu... [more] | OFT2015-49 pp.17-21 |
| IN, NS, CS, NV (Joint) |
2015-09-04 12:00 |
Iwate | Iwate-ken Kokaido | Near Real-Time Group Movement Detection Method Based on LTE Control Signals Quentin Plessis, Masaki Suzuki, Takeshi Kitahara, Shigehiro Ano (KDDI Labs.) IN2015-49 |
The performances of a mobile network are affected by the movement of its users, which leads to the reallocation of netwo... [more] | IN2015-49 pp.51-56 |
| EMT, MW, OPE, MWP, EST, IEE-EMT [detail] | 2015-07-16 14:30 |
Hokkaido | Kushiro City Lifelong Learning Center | Design of multi-step index few-mode fiber based on sensitivity analysis Jin Nishimoto, Yasuhide Tsuji (Muroran Inst Tech) EMT2015-27 MW2015-65 OPE2015-39 EST2015-31 MWP2015-30 |
In this paper, we study on the optimization method of few-mode fibers (FMFs) with multi-step index profile to reduce the... [more] | EMT2015-27 MW2015-65 OPE2015-39 EST2015-31 MWP2015-30 pp.105-109 |
| NS, IN (Joint) |
2015-03-03 09:20 |
Okinawa | Okinawa Convention Center | An Efficient Data Collection Scheme for Real-Spatial Information based Group Communication Hitomi Fuji, Kazuya Tsukamoto, Yuji Oie (KIT), Hiroshi Ishinishi, Katsuichi Nakamura (NAL) NS2014-216 |
Recently, a demand for flexible group communication considering the information of users' location and property is incre... [more] | NS2014-216 pp.227-232 |
| SIP, EA, SP | 2015-03-03 10:45 |
Okinawa | [Poster Presentation]
Effectiveness of Local Feature, Group Delay Spectrum, MFCC and Their Combination on Phoneme Recognition Performance Risa Koizumi, Kazuyuki Takagi (UEC) EA2014-108 SIP2014-149 SP2014-171 |
In most of current speech processing techniques, MFCC (Mel-Frequency Cepstrum Coefficients) obtained from amplitude spec... [more] | EA2014-108 SIP2014-149 SP2014-171 pp.197-200 |
|
| IN | 2015-01-22 10:45 |
Aichi | Nagoya International Center | An Improvement Method of OLSR for Sensor Networks Based on Grouping Nodes for Sleep Mode Yuki Saito, Shigetomo Kimura (Univ. of Tsukuba) IN2014-99 |
In sensor networks, all nodes are powered only by their battery. It is very important to suppress consuming power and ex... [more] | IN2014-99 pp.7-12 |
| SP, ASJ-H | 2014-10-24 09:00 |
Wakayama | Nanki Shirahama Onsen Hotel Seamore | [Invited Talk]
Speech processing based on static representations of periodic signals Hideki Kawahara (Wakayama Univ.) |
Locally periodic signals, such as voiced sounds and sounds of musical instruments, play important roles in our everyday ... [more] | SP2014-87 pp.65-70 |
| OCS, OFT (Joint) |
2014-08-29 15:15 |
Hokkaido | Kushiro Royal Inn | Design of low DMD few-mode fibers supporting large number of modes for mode-division-multiplexed transmission Takayoshi Mori, Taiji Sakamoto, Masaki Wada, Takashi Yamamoto, Fumihiko Yamamoto (NTT) OFT2014-22 |
Mode-division multiplexing (MDM) transmission is considered a promising technology for dealing with the capacity crunch ... [more] | OFT2014-22 pp.31-36 |
| CAS, SIP, MSS, VLD, SIS [detail] | 2014-07-10 09:30 |
Hokkaido | Hokkaido University | Temporally static representation of group delay for periodic signals Hideki Kawahara (Wakayama Univ.) CAS2014-21 VLD2014-30 SIP2014-42 MSS2014-21 SIS2014-21 |
Short term Fourier transform of periodic signals introduce periodic temporal variations in their Frequency domain repres... [more] | CAS2014-21 VLD2014-30 SIP2014-42 MSS2014-21 SIS2014-21 pp.105-110 |
| AP | 2014-06-12 13:30 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Novel Wideband Decoupling Network corresponding to Group Delay in Coupling Phase between Two Antennas Hidetoshi Makimura, Kengo Nishimoto, Toru Fukasawa, Hiroaki Miyashita (Mitsubishi Electric) AP2014-42 |
This paper presents a novel decoupling network which reduces coupling between antennas in multi-antenna systems. Althoug... [more] | AP2014-42 pp.13-18 |
| OFT | 2014-01-24 14:05 |
Tokyo | Mode dependence of stress induced group delay variation in MMF Shota Miyauchi, Norio Kashima (Shibaura Inst. of Tech.) OFT2013-47 |
We have proposed and studied parallel transmission systems using fiber-ribbons for a purpose of ultra-high-speed network... [more] | OFT2013-47 pp.5-10 |
|
| OCS, OFT, ITE-BCT, IEE-CMN (Joint) [detail] |
2013-11-21 16:15 |
Niigata | Nagaoka University of Technology | A Study Regarding the Time-delay Calibration for the Interruption-free Optical Access Line Transfer System Keiji Okamoto, Masaaki Inoue, Kazunori Katayama, Tetsuya Manabe (NTT) OFT2013-41 |
In order to realize an efficient operation for rearranging optical access lines, we have studied optical line switching ... [more] | OFT2013-41 pp.25-30 |
| OCS | 2013-07-26 14:10 |
Tokyo | Sumida-Sangyo-Kaikan | [Invited Talk]
Few-mode fibers with large number of modes and low differential mode group delay for mode-division-multiplexed transmission Takayoshi Mori, Taiji Sakamoto, Masaki Wada, Takashi Yamamoto, Fumihiko Yamamoto (NTT) OCS2013-32 |
A new approach for realizing a much higher transmission capacity has recently been developed that utilizes the higher-or... [more] | OCS2013-32 pp.75-80 |
| EA | 2013-07-19 11:45 |
Hokkaido | Health Sci. Univ. of Hokkaido | Changes in acoustic properties of headphones with and without "aging" Kihiro Hashino, Yuki Kato, Hirofumi Nakajima, Kazunori Miyoshi (Kogakuin Univ.) EA2013-48 |
In this report, to validate acoustic property changes of headphones by “Aging”. We analyzed the difference of various ac... [more] | EA2013-48 pp.87-92 |
| EMCJ | 2013-07-11 13:35 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | A Study on Embedded F-SIR Type Transmission Line for Negative Group Delay Characteristics Xiaofan Yang, Yoshiki Kayano (Akita Univ.), Hiroshi Inoue (The Open University of Japan- Akita Study Center) EMCJ2013-32 |
Negative group delay characteristics can be used to improve signal-integrity performance such as an equalizer for compen... [more] | EMCJ2013-32 pp.27-32 |
| OFT, OPE, OCS (Joint) [detail] |
2013-02-28 17:15 |
Tokyo | [Invited Talk]
Design and characteristics of Two-Mode Optical Fiber with low DMD and Large Aeff Ryo Maruyama, Nobuo Kuwaki, Kiminori Sato, Shoichiro Matsuo (Fujikura), Masaharu Ohashi (Osaka Prefecture Univ.) OCS2012-105 OFT2012-77 OPE2012-195 |
Recently, mode division multiplexing (MDM) transmission system in Few-Mode Optical Fiber (FMF) has attracted considerabl... [more] | OCS2012-105 OFT2012-77 OPE2012-195 pp.45-50 |
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