Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
WBS, ITS, RCC |
2024-12-04 16:05 |
Kagoshima |
Kagoshima Prefectural Culture Center (Kagoshima, Online) (Primary: On-site, Secondary: Online) |
A study on diversity effect of phase rotated higher-order QAM Shunya Tsunakawa, Masahiro Fujii (Utsunomiya Univ.) WBS2024-41 ITS2024-22 RCC2024-46 |
In this paper, we consider a method to obtain diversity effect without signal redundancy by adding phase rotation to nor... [more] |
WBS2024-41 ITS2024-22 RCC2024-46 pp.52-57 |
NS, IN, CS, NV (Joint) |
2024-09-06 11:45 |
Miyagi |
Tohoku University + Online (Miyagi) |
A study on diversity effect by phase rotated QAM in selective fading channel Shunya Tsunakawa, Masahiro Fujii (Utsunomiya Univ.) CS2024-42 |
In this paper, we consider a method to obtain diversity effect without symbol redundancy by rotating symbol constellatio... [more] |
CS2024-42 pp.15-20 |
MW |
2024-05-16 14:30 |
Osaka |
Osaka University Toyonaka Campus (Osaka, Online) (Primary: On-site, Secondary: Online) |
Improved image rejection with correction of I/Q amplitude and phase errors in an even harmonic quadrature mixer Takaaki Michishita, Kousuke Ito, Masaomi Tsuru, Naoki Sakai, Kenji Itoh (KIT) MW2024-8 |
This paper describes improved image rejection with correction of I/Q amplitude and phase errors in an even harmonic quad... [more] |
MW2024-8 pp.1-6 |
PN |
2022-03-02 09:50 |
Online |
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 |
OCS, CS (Joint) |
2022-01-14 11:00 |
Yamaguchi |
Conference room 204A・B at KDDI Ishin-hall (Yamaguchi, Online) (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, NS, OCS (Joint) |
2021-06-25 15:50 |
Online |
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 |
NS, IN, CS, NV (Joint) |
2019-09-06 14:55 |
Miyagi |
Research Institute of Electrical Communication, Tohoku Univ. (Miyagi) |
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 |
RCS |
2019-06-21 09:30 |
Okinawa |
Miyakojima Hirara Port Terminal Building (Okinawa) |
A study on high efficiency phase shift keying on 3-dimensional Euclidean space Sho Kakuwa, Masahiro Fujii (Utsunomiya Univ.), Takanori Iwamatsu (FTN) RCS2019-82 |
It is necessary to assign many symbols on In-phase and Quadrature-phase(IQ)-diagram for high speed transmission,but it c... [more] |
RCS2019-82 pp.261-266 |
SRW |
2019-06-10 09:25 |
Kanagawa |
Anritsu (Kanagawa) |
Blind compensation for wide-band single carrier systems with various frequency-dependent IQ imbalance Hideki Mori, Tadao Nakagawa, Naoto Sasaoka (Tottori Univ.), Doohwan Lee (NTT) SRW2019-2 |
As the frequency bandwidth in wireless communications are wide, impairments of analog circuits of transceivers including... [more] |
SRW2019-2 pp.7-11 |
SIS |
2019-03-07 10:20 |
Tokyo |
Tokyo Univ. Science, Katsushika Campus (Tokyo) |
A Study on IQ Imbalance Compensation with Decision Feedback Equalizer for Broadband OFDM Systems Hiroki Inata, Naoto Sasaoka, Tadao Nakagawa, Yoshio Itoh (Tottori Univ.) SIS2018-46 |
In order to realize high-speed wireless communications, higher frequency and broader band are being advanced. However am... [more] |
SIS2018-46 pp.49-52 |
SRW |
2019-01-15 13:25 |
Kanagawa |
Mitsubishi Electric (Oofuna) (Kanagawa) |
Blind frequency-dependent IQ imbalance compensation for single carrier systems Hideki Mori, Tadao Nakagawa, Naoto Sasaoka (Tottori Univ.), Doohwan Lee, Takana Kaho (NTT) SRW2018-50 |
As the frequency bandwidth in wireless communications is wide, impairments of analog circuits of transceivers including ... [more] |
SRW2018-50 pp.25-29 |
OPE, LQE, OCS |
2018-10-19 13:05 |
Saga |
(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.) OCS2018-45 OPE2018-81 LQE2018-70 |
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 |
RCS, SR, SRW (Joint) |
2018-03-02 11:45 |
Kanagawa |
YRP (Kanagawa) |
Blind frequency-dependent IQ imbalance compensation using constant norm algorithm for OFDM systems Ryoto Hamabe, Tadao Nakagawa (Tottori Univ.), Doohwan Lee, Takana Kaho (NTT) SRW2017-90 |
As the frequency bandwidth in wireless communications are wide, impairments of analog circuits of transceivers including... [more] |
SRW2017-90 pp.105-108 |
MW |
2017-05-19 13:50 |
Osaka |
Osaka Univ. (Seminar Room1, Osaka Univ. Kaikan) (Osaka) |
Ku-band Vector-Sum Phase Shifter Using LC-Type PPF With Adjustable Operating Frequency Takanobu Fujiwara, Koji Tsutsumi, Mitsuhiro Shimozawa (Mitsubishi Electric Corp.) MW2017-20 |
Recently many vector-sum phase shifters designed with cost-effective silicon process have been reported, featuring their... [more] |
MW2017-20 pp.71-76 |
MW, ICD |
2017-03-03 10:50 |
Okayama |
Okayama Prefectural Univ. (Okayama) |
Speeding up using Parallel-Serial conversion in FPGA implementation of quadrature modulation Envelope Pulse Width Modulation Transmitter Kouhei Nagasawa, Yohtaro Umeda, Yusuke Kozawa (Tokyo Univ. of Science) MW2016-207 ICD2016-137 |
This paper presents a new configuration using a serializer on quadrature-modulation (QM) envelope-pulse-width-modulation... [more] |
MW2016-207 ICD2016-137 pp.107-112 |
AP, RCS, WPT, SAT (Joint) |
2015-11-04 13:40 |
Okinawa |
Okinawa Prefectural Museum & Art Museum (Okinawa) |
A Study on OFDM/PM Scheme with Exponential Companding Technique Fukami Keisuke, Saito Masato (Ryukyu Univ.) SAT2015-47 |
We have studied OFDM/PM (Orthogonal Frequency Division Multiplexing over Phase Modulation) scheme for high-speed satelli... [more] |
SAT2015-47 pp.1-6 |
OPE, OCS, OFT (Joint) [detail] |
2015-02-20 15:50 |
Kagoshima |
(Kagoshima) |
RZ-OOK to RZ-DQPSK Format Conversion With All-Optical Clock Regeneration Naoya Oka, Keita Mizusaka, Motoharu Matsuura (UEC) OFT2014-79 OPE2014-234 |
We demonstrated RZ-OOK to RZ-DQPSK format conversion with all-optical clock regeneration, which does not require a conve... [more] |
OFT2014-79 OPE2014-234 pp.117-120(OFT), pp.175-178(OPE) |