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Search Results: Conference Papers
 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 59件中 1~20件目  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
OCS, ITE-BCT, OFT, IEE-CMN [detail] 2019-11-21
15:30
Yamaguchi Kaikyo-Messe-Shimonoseki Performance evaluation of MIMO adaptive equalization with feedback delay in optical coherent reception
Koji Igarashi (Osaka Univ.)
(Advance abstract in Japanese is available) [more]
OCS, LQE, OPE 2019-10-18
09:55
Kagoshima   Degradation of Achievable Information Rate due to Phase Noise in Optical Coherent Systems
Sou Chien, Koji Igarashi (Osaka Univ.)
Achievable information rate (AIR) is perfect tool to evaluate the number of the reliably-transmitted information bits pe... [more] OCS2019-41 OPE2019-79 LQE2019-57
pp.73-76
OFT, OCS, LSJ
(Joint) [detail]
2019-08-29
16:10
Hokkaido   Real-time MIMO optical receivers for weakly-coupled ten-mode-multiplexed systems
Koji Igarashi (Osaka Univ), Shohei Beppu (KDDI Research), Masahiro Kikuta (NECPF), Tomoyuki Nagai (Osaka Univ), Yasuo Saito (NECPF), Daiki Soma, Takehiro Tsuritani (KDDI Research)
(Advance abstract in Japanese is available) [more] OCS2019-23
pp.17-22
OCS, PN, NS
(Joint)
2019-06-20
11:25
Iwate MALIOS(Morioka) Statistical characteristics of modal coupling at multiple connections of weakly coupled 10 mode fibers
Gen Kawabata, Koji Igarashi (Osaka Univ.)
(Advance abstract in Japanese is available) [more] OCS2019-12
pp.11-15
ITE-BCT, OCS, OFT, IEE-CMN [detail] 2018-11-08
11:30
Okayama Kurashiki-City-Geibunnkan Statistical Model for Nonlinear Fiber Propagation and Its Application to Nonlinear Compensation for DP-16QAM Optical Signals
Shuai Yuan, Koji Igarashi (Osaka Univ.)
In this paper, we investigate the statistical characteristics of nonlinear fiber transmission. With the statistical mode... [more] OCS2018-53
pp.7-12
ITE-BCT, OCS, OFT, IEE-CMN [detail] 2018-11-09
15:20
Okayama Kurashiki-City-Geibunnkan Data-Associated Channel Compensation and Carrier Phase Recovery Based on Large-System Limit for PDM System
Seiji Tanaka, Noboru Osawa, Shinsuke Ibi, Koji Igarashi, Seiichi Sampei (Osaka Univ.)
In PDM systems, polarization demultiplexing and carrier phase recovery (CPR) are required for signal detection.
%
This... [more]
OCS2018-57
pp.69-74
OPE, LQE, OCS 2018-10-19
13:05
Saga   Optimization of signal amplitudes for dynamic range of analog-to-digital convertor in digital coherent reception of ultra-high QAM optical signals
Yasuhiro Kawabata, Koji Igarashi (Osaka Univ.)
In the digital coherent reception of ultra-high quadrature amplitude modulation (QAM) optical signals, the received ampl... [more] OCS2018-45 OPE2018-81 LQE2018-70
pp.93-97
OPE, LQE, OCS 2018-10-19
13:30
Saga   Performance evaluation of spectrally-synthesized coherent reception for constellation monitoring of pseudo random quadrature phase shift keying optical signals
Naoki Urakawa, Koji Igarashi (Osaka Univ.)
In our proposed spectrally-synthesized coherent reception for measuring constellation maps of periodical optical signals... [more] OCS2018-46 OPE2018-82 LQE2018-71
pp.99-104
OCS, OFT, LSJ
(Joint) [detail]
2018-08-30
14:05
Hokkaido Hakodate Hokuyo Building 8Kai Hall Optimization of core diameter for suppression of modal coupling in few-mode fiber connection
Gen Kawabata, Koji Igarashi (Osaka Univ.)
The modal couplings can be caused by the misalignment errors in few-mode fiber (FMF) connection. It is one of the most c... [more] OCS2018-21
pp.11-14
NS, OCS, PN
(Joint)
2018-06-15
11:15
Fukushima Koriyama-Shoko-Kaigisho Modal crosstalk due to multiple fiber connectors in weakly-coupled few-mode fiber transmission systems
Yuki Yamato, Koji Igarashi (Osaka Univ.)
(Advance abstract in Japanese is available) [more] OCS2018-18
pp.43-47
CS, OCS
(Joint)
2018-01-30
08:50
Ehime Ehime University Feedback-control-free Adaptive Equalization Using Dual-polarization Pilot Tones for Optical Coherent Reception
Tomoki Nishiyama, Shuai Yuan, Koji Igarashi (Osaka Univ.)
We propose feedback-control-free adaptive equalization for optical coherent receivers. The polarization rotation and the... [more] OCS2017-73
pp.37-41
CS, OCS
(Joint)
2018-01-30
09:15
Ehime Ehime University Performance degradation of adaptive equalization due to parallelizing digital signal processing in optical coherent reception
Koji Igarashi (Osaka Univ.)
(Advance abstract in Japanese is available) [more] OCS2017-74
pp.43-48
SIP, IT, RCS 2018-01-23
11:40
Kagawa Sunport Hall Takamatsu [Invited Lecture] Digital signal processing in optical fiber transmission systems based on coherent reception
Koji Igarashi (Osaka Univ.)
 [more] IT2017-89 SIP2017-97 RCS2017-303
pp.201-206
OFT, OCS, IEE-CMN, ITE-BCT [detail] 2017-11-23
15:25
Osaka Kansa-Univ. Umeda Campus A Study on EXIT Chart Based Design of Low-Density Parity-Check Codes for Iterative Soft Beat Interference Canceller in Pilot-Assisted Optical-OFDM
Noboru Osawa, Shinsuke Ibi, Koji Igarashi, Seiichi Sampei (Osaka Univ.)
This paper proposes a low density parity check (LDPC) code design based on extrinsic information transfer (EXIT) chart a... [more] OCS2017-60
pp.17-22
OFT, OCS, IEE-CMN, ITE-BCT [detail] 2017-11-24
15:50
Osaka Kansa-Univ. Umeda Campus 257-Tbit/s Partial MIMO-based 10-Mode C+L-band WDM Transmission
Daiki Soma, Shohei Beppu, Yuta Wakayama (KDDI Research, Inc.), Koji Igarashi (Osaka Univ.), Takehiro Tsuritani (KDDI Research, Inc.)
Mode-division multiplexing (MDM) transmission technique using a few-mode fiber (FMF) has been investigated to overcome t... [more] OCS2017-65
pp.79-83
AP, RCS
(Joint)
2017-11-09
10:50
Fukuoka Fukuoka University [Invited Lecture] Application of MIMO techniques for high-capacity optical fiber transmission
Koji Igarashi (Osaka Univ.)
 [more] AP2017-120 RCS2017-228
pp.65-70(AP), pp.135-140(RCS)
OCS, OPE, LQE 2017-10-26
09:45
Kumamoto Josaien, Sakuranobaba Performance evaluation of fiber-coupler-based mode multiplexer for weakly-coupled six-mode multiplexed systems
Koji Igarashi (Osaka Univ.), Yuta Wakayama, Daiki Souma, Takehiro Tsuritani (KDDI Research), Kyung Jun Park, Byoung Yoon Kim (KAIST)
(Advance abstract in Japanese is available) [more] OCS2017-36 OPE2017-68 LQE2017-41
pp.1-5
OFT, OCS, LSJ
(Joint) [detail]
2017-08-31
14:30
Hokkaido Hokkaido Univ. Measurement of Complex Amplitudes of Optical Signal Patterns in the Frequency Domain
Naoki Urakawa, Koji Igarashi (Osaka Univ.)
We propose a scheme for measuring complex amplitudes of optical signal patterns in the frequency domain. In the coherent... [more] OCS2017-23
pp.1-6
OFT, OCS, LSJ
(Joint) [detail]
2017-08-31
15:55
Hokkaido Hokkaido Univ. 10-Mode-Multiplexed Transmission over 81km Weakly-coupled Few-mode Fiber with Partial MIMO Equalizers
Daiki Soma, Yuta Wakayama (KDDI Research), Koji Igarashi (Osaka Univ.), Takehiro Tsuritani (KDDI Research)
Mode-division multiplexing (MDM) transmission technique using a few-mode fiber (FMF) is attractive for increasing the tr... [more] OCS2017-25
pp.13-17
OFT, OCS, LSJ
(Joint) [detail]
2017-09-01
09:00
Hokkaido Hokkaido Univ. Generation of ultra-high order quadrature amplitude modulation optical signals based on single sideband modulation
Koji Igarashi (Osaka Univ.)
(Advance abstract in Japanese is available) [more] OCS2017-27
pp.25-28
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