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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| 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 |
| 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, 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 |
| 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 |
| RCS | 2019-06-21 09:30 |
Okinawa | Miyakojima Hirara Port Terminal Building | 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 | 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 | 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) | 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 | 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 |
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| RCS, SR, SRW (Joint) |
2018-03-02 11:45 |
Kanagawa | YRP | 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) | 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. | 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 | 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 | 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) |
|
| MW | 2014-11-21 10:55 |
Nagasaki | Nagasaki Univ. | Quadrature-modulation Transmitter with Tri-level Delta-sigma Modulation for Generating Bi-level EPWM Signal Takashi Noda, Wataru Someya, Yoshiharu Iikura, Yohtaro Umeda, Yusuke Kozawa (Tokyo Univ. of Science) MW2014-139 |
This paper presents a quadrature-modulation (QM) envelope-pulse-width-modulation (EPWM) transmitter with delta-sigma tri... [more] | MW2014-139 pp.83-88 |
| SAT, SANE (Joint) |
2014-02-21 09:00 |
Yamaguchi | Hotel Kamefuku (Yamaguchi) | A study on applying OFDM/FM scheme to satellite communication systems Keisuke Fukami, Masato Saito (Univ. of Ryukyu) SAT2013-58 |
In satellite communication systems, non-linear amplifiers are used because of their power efficiency. Thus, it is diffic... [more] | SAT2013-58 pp.47-52 |
| EA | 2012-06-08 15:35 |
Shizuoka | Yamaha Co. | Mathematical Metric of Musical Noise for Various Nonlinear Speech Enhancement Algorithms Suzumi Kanehara, Ryoichi Miyazaki, Hiroshi Saruwatari, Kiyohiro Shikano (NAIST), Kazunobu Kondo (Yamaha) EA2012-44 |
In this paper, we propose a new theoretical analysis of amount of musical noise generated in several noise reduction met... [more] | EA2012-44 pp.67-72 |
| EMCJ | 2011-01-28 15:25 |
Kumamoto | Kumamoto National College of Technology | A Measurement of Near Magnetic Field on PCBs by Using 6-port Technique Toshihiro Takatsu, Fengchao Xiao (UEC), Kimitoshi Murano (Tokai Univ.), Yoshio Kami (UEC) EMCJ2010-115 |
A method and network for measuring complex electromagnetic (EM) fields is proposed. The method is based on a network of ... [more] | EMCJ2010-115 pp.91-96 |
| EMT, OPE, MW, IEE-EMT [detail] | 2010-07-29 14:20 |
Hokkaido | Hokkaido Univ. | 75-km SMF transmission of optical 16 QAM signal generated by a monolithic quad-parallel Mach-Zehnder optical modulator Akito Chiba, Takahide Sakamoto, Tetsuya Kawanishi (NICT), Kaoru Higuma, Masaaki Sudo, Junichiro Ichikawa (Sumitomo Osaka Cement Co., Ltd.) MW2010-45 OPE2010-30 |
We demonstrate 75-km single mode fiber transmission of 40-Gbit/s optical 16-level quadrature amplitude modulation (16QAM... [more] | MW2010-45 OPE2010-30 pp.41-44 |
| SIP, CAS, CS | 2010-03-02 13:45 |
Okinawa | Hotel Breeze Bay Marina, Miyakojima | All-Digital Quadrature Up-Conversion Type Transmitter with Alternate Generation of I- and Q-Channel Shingo Matsumaru, Yohtaro Umeda, Osamu Takyu (Tokyo Univ. of Science.) CAS2009-137 SIP2009-182 CS2009-132 |
This paper proposes all-digital up-conversion type transmitter that generate I- and Q-channel alternately in every cycle... [more] | CAS2009-137 SIP2009-182 CS2009-132 pp.279-284 |
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