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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| 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 |
| MRIS, IEE-MAG | 2019-03-08 11:45 |
Aichi | Nagoya Univ. | [Invited Talk]
Non-interferometric detection of signal beam with spatial quadrature amplitude modulation in holographic memory Masatoshi Bunsen (Fukuoka Univ.), Shosei Tateyama (Graduate School of Engineering, Fukuoka Univ.) MRIS2018-28 |
In recent years, Spatial Quadrature Amplitude Modulation (SQAM) is actively studied in order to increase storage density... [more] | MRIS2018-28 pp.17-22 |
| ICD, CPSY, CAS | 2018-12-21 13:50 |
Okinawa | Investigation of Design Method of Low-Power 64-QAM Transmitter Employing Backscattering Technique Kaede Miyauchi, Noboru Ishihara, Hiroyuki Ito (Titech) CAS2018-79 ICD2018-63 CPSY2018-45 |
With the widespread of IoT, it is thought that frequency will become tight even in short distance communication between ... [more] | CAS2018-79 ICD2018-63 CPSY2018-45 pp.7-9 |
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| ICD, CPSY, CAS | 2018-12-23 16:10 |
Okinawa | Comparison between Quadrature-modulation EPWM transmitters with a 90° and 180° hybrid in physical models Tomoaki Morita, Yohtraro Umeda (Tokyo Univ. of Science) CAS2018-115 ICD2018-99 CPSY2018-81 |
Quadrature-modulation envelope-pulse-width-modulation (EPWM) transmitter with a 180° (180HYB system) or 90° hybrid (90HY... [more] | CAS2018-115 ICD2018-99 CPSY2018-81 pp.153-158 |
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| 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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| ICD, CPSY, CAS | 2017-12-14 11:00 |
Okinawa | Art Hotel Ishigakijima | A Study on Wireless Transmitter with Up-converted Root-Cosine Roll-off Waveform Iroi Yamamoto, Yohtaro Umeda (Tokyo Univ. of Science) CAS2017-67 ICD2017-55 CPSY2017-64 |
In this paper, we reconfigure the conventional analog signal processing transmitter and propose an all-digital transmitt... [more] | CAS2017-67 ICD2017-55 CPSY2017-64 pp.21-26 |
| ICD, CPSY, CAS | 2017-12-14 15:10 |
Okinawa | Art Hotel Ishigakijima | A Study of Spectral Efficiency Improvement for IF-based Quadrature Backscattering Technique Kaede Miyauchi, Hiroyuki Ito, Noboru Ishihara, Shiro Dosho, Kazuya Masu (Tokyo Tech.) CAS2017-93 ICD2017-81 CPSY2017-90 |
Due to the widespread of IoT, it is thought that frequency will become tight even in short distance communication betwee... [more] | CAS2017-93 ICD2017-81 CPSY2017-90 p.131 |
| MRIS, ITE-MMS | 2017-12-08 09:00 |
Ehime | Ehime Univ. | Investigation of influence of symbol size and tilt angle of measurement reference beam in SQAM signal demodulation by phase-shift embedding method Tatsuki Yamamoto, Kazutaka Kanno, Masatoshi Bunsen (Fukuoka Univ.) MR2017-36 |
Spatial Quadrature Amplitude Modulation (SQAM) modulates the spatial phase and intensity of the signal beam, and attract... [more] | MR2017-36 pp.57-62 |
| MW, EMCJ, EST, IEE-EMC [detail] | 2017-10-20 10:25 |
Akita | Yupopo | A Quadrature-modulation EPWM Transmitter That Uses Co-phase Sine Wave Carriers for I/Q Channel and a 90° Hybrid as a Signal Combiner Tomoaki Morita, Ryo Sakai, Yohtaro Umeda (Tokyo Univ. of Science), Yusuke Kozawa (Ibaraki Univ.) EMCJ2017-45 MW2017-97 EST2017-60 |
Quadrature-modulation (QM) envelope-pulse-width modulation (EPWM) transmitter with a 180° hybrid as a power combiner has... [more] | EMCJ2017-45 MW2017-97 EST2017-60 pp.105-110 |
| SDM, ICD, ITE-IST [detail] | 2017-08-02 13:45 |
Hokkaido | Hokkaido-Univ. Multimedia Education Bldg. | Multi-carrier Transmission Characteristics of All-Digital Low-IF Transmitter Using Weber-Type Image Suppression Method Takumi Kamo, Yohtaro Umeda (Tokyo Univ. of Science), Yusuke Kozawa (Ibaraki Univ.) SDM2017-47 ICD2017-35 |
In this paper, multicarrier transmission is performed by using a bandpass type (BP) ΔΣ modulator in an orthogonal modula... [more] | SDM2017-47 ICD2017-35 pp.117-122 |
| SDM, ICD, ITE-IST [detail] | 2017-08-02 14:10 |
Hokkaido | Hokkaido-Univ. Multimedia Education Bldg. | A Quadrature-modulation EPWM Transmitter with Parallel-Output MASH Delta-Sigma Modulator Takumi Yamamoto, Yohtaro Umeda (Tokyo Univ. of Science), Yusuke Kozawa (Ibaraki Univ.) SDM2017-48 ICD2017-36 |
In this paper, Multi StAge Noise Shaping (MASH) architecture is employed to realize high noise reduction capability by n... [more] | SDM2017-48 ICD2017-36 pp.123-128 |
| MW, ICD | 2017-03-03 09:25 |
Okayama | Okayama Prefectural Univ. | Quadrature-modulation Envelope-pulse-width-modulation Transmission System Using Quadrature Polarized Waves Ryo Sakai, Yohtaro Umeda, Yusuke Kozawa (Tokyo Univ. of Science) MW2016-204 ICD2016-134 |
This paper presents quantitative evaluation of power efficiency decrese by not satisfying the zero current switching (ZC... [more] | MW2016-204 ICD2016-134 pp.89-94 |
| 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 |
| MRIS, ITE-MMS | 2016-12-08 15:20 |
Ehime | Ehime Univ. | Detection method of complex amplitude of reconstructed signal beam in intensity- and phase-modulated holographic data storage Masatoshi Bunsen (Fukuoka Univ.), Keishiro Yoshidomi, Tatsuki Yamamoto (Grad. School of Eng., Fukuoka Univ.), Kazutaka Kanno (Fukuoka Univ.) MR2016-33 |
Spatial Quadrature Amplitude Modulation (SQAM) in which the spatial phase of the signal beam is modulated in addition to... [more] | MR2016-33 pp.21-26 |
| AP | 2016-08-23 09:55 |
Nagasaki | Nagasaki Univ. | Consideration of Noise Suppression System for AM signal using Quadrature Demodulation and FFT Shinya Ito, Mitoshi Fujimoto, Toshikazu Hori (Fukui Univ.), Tomohisa Harada, Yoshiyuki Hattori (TCRDL) AP2016-80 |
In this paper a noise suppression system using quadrature demodulation techniques and fast fourier transformation(FFT) i... [more] | AP2016-80 pp.69-72 |
| CS, OCS (Joint) |
2016-01-22 13:05 |
Kagoshima | Kagoshima University, Korimoto Campus, Inamori Auditorium | Dispersion Tolerance Improvement on Transmission of 16-QAM signals Interleaved with Reference Light by Adjustment of Electric Field Amplitude Naotaka Ishimura, Yasuhiro Okamura (Tokushima Univ.), Masanori Hanawa (Yamanashi Univ.), Atsushi Takada (Tokushima Univ.) OCS2015-97 |
We propose an adjustment of electric field amplitude ratio (EAR) between 16-quadrature amplitude modulation (16QAM) sign... [more] | OCS2015-97 pp.51-56 |
| 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 |
| IE, ITS, ITE-AIT, ITE-HI, ITE-ME, ITE-MMS, ITE-CE [detail] | 2015-02-24 11:30 |
Hokkaido | Hokkaido Univ. | Consideration on detection methods of signal with Spatial Quadrature Amplitude Modulation for holographic data storage Masatoshi Bunsen, Kazutaka Kanno, Takuya Hisaoka, Yudai Shibata, Takanori Sato (Fukuoka Univ.) |
Spatial Quadrature Amplitude Modulation (SQAM) in which the spatial phase of the signal beam in addition to the spatial ... [more] | |
| 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 |
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