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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 47  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
MW 2024-02-29
13:50
Okayama Okayama Prefectural University
(Primary: On-site, Secondary: Online)
Observation of WPT spectrum at 2.4 GHz band and 5 GHz band
Takashi Shiba, Tomoyuki Furuichi, Noriharu Suematsu (Tohoku Univ.) MW2023-180
Usecase of Wireless Power Transfer (WPT) system becomes wider because of its convenience. 920MHz, 2.4GHz, 5GHz bands are... [more] MW2023-180
pp.31-36
SAT, SANE
(Joint)
2024-02-08
10:50
Kagoshima AmaHome PLAZA (Amami City Shimin Koryu Center)
(Primary: On-site, Secondary: Online)
Basic study of Q/V-band on-board DBF antenna subsystem for LEO constellation
Noriharu Suematsu, Tomoyuki Furuichi, Satoshi Tsukamoto (Tohoku Univ.) SAT2023-62
For future Japanese Low Earth Orbit (LEO) constellation satellite communication, explore of new frequency band (Q/V-band... [more] SAT2023-62
pp.18-22
SIP, IT, RCS 2024-01-19
10:20
Miyagi
(Primary: On-site, Secondary: Online)
Experimental Results of a Channel Sounder for Underwater Acoustic Communications in Sharrow Sea Environment
Kouichi Hashimoto, Taichi Fujita, Takumi Yoshimura, Hiroshi Kubo (Ritsumeikan Univ.) IT2023-58 SIP2023-91 RCS2023-233
Doubly-selectivity of underwater acoustic communications (UWACs) can be measured by channel sounders, which estimate tim... [more] IT2023-58 SIP2023-91 RCS2023-233
pp.151-156
UWT
(2nd)
2023-11-27
14:50
Shiga Ritsumeikan University Biwako-Kusatsu Campus (BKC) [Invited Talk] A Channel Sounder for Underwater Acoustic Communications and its Experimental Results in Sharrow Sea Environment
Hiroshi Kubo, Kouichi Hashimoto, Taichi Fujita, Takumi Yoshimura (Ritsumeikan Univ.)
Doubly-selectivity of underwater acoustic communications (UWACs) can be measured by channel sounders, which estimate tim... [more]
AP, RCS
(Joint)
2023-11-17
11:25
Kumamoto Kumamoto Prefectural Workers' Welfare Hall
(Primary: On-site, Secondary: Online)
[Encouragement Talk] Differential OFDM for Underwater Acoustic Communications and its Experimental Results in Sharrow Sea Environment
Hiroshi Kubo, Taichi Fujita, Kouichi Hashimoto, Takumi Yoshimura (Ritsumeikan Univ.) RCS2023-172
It is well-known that underwater acoustic communications (UWACs) play an important role for underwater mobile communicat... [more] RCS2023-172
pp.101-106
EST, MW, EMT, OPE, MWPTHz, IEE-EMT [detail] 2023-07-20
09:10
Hokkaido Muroran Institute of Technology
(Primary: On-site, Secondary: Online)
A Basic Architecture Design of Direct Digital RF DBF Transceiver for Q/V-Band On-Board Unit
Noriharu Suematsu, Tomoyuki Furuichi, Satoshi Tsukamoto (Tohoku Univ) EMT2023-22 MW2023-40 OPE2023-22 EST2023-22 MWPTHz2023-18
This paper describes a transceiver design of Q/V(40/50 GHz)-band DBF antenna for low earth orbit (LEO) constellation on-... [more] EMT2023-22 MW2023-40 OPE2023-22 EST2023-22 MWPTHz2023-18
pp.71-75
MW 2023-03-03
13:00
Tottori Tottori Univ.
(Primary: On-site, Secondary: Online)
A Radio Wave Environment Measurement in Dense Environment using Real-Time Wideband Spectrum Monitor
Tomoyuki Furuichi, Takashi Shiba (Tohoku Univ.), Youhei Kubota, Ryo Koike, Kouhei Hanzawa (TMEJ), Noriharu Suematsu (Tohoku Univ.) MW2022-175
In an environment where multiple different wireless systems, such as wireless IoT, coexist in a narrow space such as a f... [more] MW2022-175
pp.103-107
MW, ED 2023-01-27
09:35
Tokyo Kikai-Shinko-Kaikan Bldg.
(Primary: On-site, Secondary: Online)
A Calibration method for RF Spectrum Regeneration Using Direct RF Undersampling at Different Sampling Frequency Multi-path
Takashi Shiba, Tomoyuki Furuichi, Noriharu Suematsu (Tohoku Univ.) ED2022-86 MW2022-145
A direct RF undersampling method is an important technique for simple circuits and devices because sampling frequency of... [more] ED2022-86 MW2022-145
pp.1-6
SR, UWT
(Joint)
2023-01-27
10:30
Tokyo Takanawa Campus, Tokai Univ.
(Primary: On-site, Secondary: Online)
A Practical Number of Sampling Points for RF Spectrum Regeneration Method Using Direct RF Undersampling
Takashi Shiba, Tomoyuki Furuichi, Noriharu Suematsu (Tohoku Univ.) SR2022-75
A Direct RF undersampling method is an important technique for simple circuits and devices because sampling frequency of... [more] SR2022-75
pp.12-19
MW 2022-12-15
15:00
Mie Jingu-Kaikan(Ise)
(Primary: On-site, Secondary: Online)
A Design of Clock Fall Time for 60 GHz-band S/H Circuit using Simple Circuit Model
Tomoyuki Furuichi, Mizuki Motoyoshi, Noriharu Suematsu (Tohoku Univ.) MW2022-135
The use of millimeter-wave bands such as the 60 GHz band has been attracting attention for broadband and large-capacity ... [more] MW2022-135
pp.22-26
RCS, AP, UWT
(Joint)
2022-11-15
14:30
Fukuoka Kyushu University, and Online
(Primary: On-site, Secondary: Online)
A Channel Sounder for Severe Doubly-Selective Channels of Underwater Acoustic Communications
Hiroshi Kubo, Kouichi Hashimoto, Taichi Fujita, Takumi Yoshimura (Ritsumeikan Univ.) RCS2022-161
Doubly-selectivity of underwater acoustic communications (UWAC) can be measured by channel sounders, which estimate time... [more] RCS2022-161
pp.37-42
MW 2022-03-04
10:00
Online Online A 60 GHz-band S/H CMOS IC for Direct RF Undersampling Reception
Tomoyuki Furuichi, Nagahiro Yoshino, Mizuki Motoyoshi, Suguru Kameda, Noriharu Suematsu (Tohoku Univ.) MW2021-131
As the increasing demand for high-speed communication, the use of millimeter-wave such as 60 GHz band has been attractin... [more] MW2021-131
pp.111-116
SR 2021-11-04
09:30
Online Online Direct RF undersampling method without anti-aliasing top filter
Takashi Shiba (Tohoku Univ.), Suguru Kameda (Hiroshima Univ.), Noriharu Suematsu (Tohoku Univ.) SR2021-41
Direct RF undersampling method is important technique for digital circuit and digital devices because sampling frequency... [more] SR2021-41
pp.1-8
MW, AP
(Joint)
2021-09-09
14:50
Online Online Effect of Jitter Noise on BER in Undersampling of Modulated Waves
Hiroyuki Saito, Hiroyuki Arai (Yokohama National Univ.) AP2021-58
In this paper, the effect of jitter noise on BER when undersampling modulated signals such as QAM signals is investigate... [more] AP2021-58
pp.10-13
SR 2021-05-21
14:00
Online Online [Technology Exhibit] Wireless IoT Real Time Spectrum Monitor Based on Direct RF Undersampling Reception Technique
Noriharu Suematsu, Tomoyuki Furuichi, Mizuki Motoyoshi, Suguru Kameda, Takashi Shiba (Tohoku Univ.) SR2021-19
In near future wireless IoT era, various and huge number of sensors/devices will be connected to the internet by wireles... [more] SR2021-19
pp.128-131
RCS, SR, SRW
(Joint)
2021-03-04
13:10
Online Online [Invited Talk] Evolution and Prospect of Digital RF Transceiver Technologies
Noriharu Suematsu, Mizuki Motoyoshi, Suguru Kameda (Tohoku Univ.) RCS2020-243 SR2020-82 SRW2020-72
USRP on the market makes SDR technology much popular. Requirements for SDR transceiver are multi-band and multi-mode ope... [more] RCS2020-243 SR2020-82 SRW2020-72
pp.177-181(RCS), pp.70-74(SR), pp.65-69(SRW)
SR 2021-01-26
14:20
Online Online [Invited Talk] Frequency Spectrum and Node Sensing Techniques for Wireless IoT
Takashi Shiba, Tomoyuki Furuichi, Mizuki Motoyoshi, Suguru Kameda, Noriharu Suematsu (Tohoku Univ.) SR2020-59
It becomes a problem of low communication speed at narrow space with several wireless communication for example of wirel... [more] SR2020-59
pp.73-80
MW 2020-03-06
10:20
Kochi Kochi City Culture-Plaza CUL=PORT
(Cancelled but technical report was issued)
Proposal of Beyond-Nyquist-Band of Water Vapor Radiometer using RF Under Sampling
Xing Lyu, Mizuki Motoyoshi, Suguru Kameda, Noriharu Suematsu (Tohoku Univ.) MW2019-155
It is important to develop a water vapor radiometer to accurately measure the amount of water vapor and cloud water in t... [more] MW2019-155
pp.85-89
AP, RCS
(Joint)
2019-11-22
16:10
Saga Saga Univ. A MIMO Channel Simulator Employing Ray Tracing Methods for Underwater Acoustic Communications
Yoshiki Tsukamoto, Hiroshi Kubo (Ritsumeikan Univ.) AP2019-141 RCS2019-236
This paper proposes a MIMO (multiple-input multiple-output) channel simulator for underwater acoustic communications (UW... [more] AP2019-141 RCS2019-236
pp.193-198(AP), pp.187-192(RCS)
MW 2019-11-14
13:15
Okinawa Minami Daido Villa. Tamokuteki Koryu Center An Undersampling Frequency Detection Method Using Phase Difference of Clock Signals and Output Signals of Two S/H circuits
Osamu Wada, Hiroyuki Mizutani, Hideyuki Nakamizo, Kazutomi Mori (Mitsubishi Electric) MW2019-101
In this paper, an undersampling frequency detection method using phase difference of a clock and an output signal of two... [more] MW2019-101
pp.7-12
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