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Search Results: Conference Papers
 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 125  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
SR 2021-05-20
10:25
Online Online Energy Detection for M-QAM Signals
Shun Ishihara, Kenta Umebayashi (TUAT), Janne Lehtomaki (UOO) SR2021-2
In this paper, we compare several analyses of energy detection for $M$-ary quadrature amplitude modulation (QAM) signals... [more] SR2021-2
pp.8-15
SR 2021-05-21
14:00
Online Online [Technology Exhibit] 5G experimental trial based on smart spectrum
Kenta Umebayashi, Hiroki Iwata (TUAT), Hirofumi Nakajo (UEC), Hikaru Kawasaki (NICT), Yusaku Babazono, Yoshinori Yahiro (TUAT), Takeo Fujii, Koichi Adachi, Taiki Matsushima (UEC), Yusuke Shibata (ECATV), Kazuo Ibuka, Takeshi Matsumura, Fumihide Kojima (NICT) SR2021-18
 [more] SR2021-18
pp.120-127
EMCJ, MICT
(Joint)
2021-03-05
13:35
Online Online A Study of noise source identification method based on near-field measurement of switching power supplies
Hiroyasu Sano, Satoshi Suzuki, Yasuaki Kaneda, Hidekatsu Sasaki (TIRI), Kenta Umebayashi (TAT) EMCJ2020-78
Fast switching increases the radiated noise, which is a problem that exceeds the regulation value of radiated emission t... [more] EMCJ2020-78
pp.30-34
RCS, SR, SRW
(Joint)
2021-03-04
11:35
Online Online [Poster Presentation] Measurement Results of 920MHz LPWA Radiowave Propagation at Half Wavelength Interval in LOS/NLOS Environment
Tomoyuki Kawashima, Shusuke Narieda (Mie Univ.), Takeo Fujii (UEC), Kenta Umebayashi (TUAT), Hiroshi Naruse (Mie Univ.) RCS2020-236 SR2020-75 SRW2020-65
 [more] RCS2020-236 SR2020-75 SRW2020-65
pp.161-162(RCS), pp.54-55(SR), pp.49-50(SRW)
RCS, SR, SRW
(Joint)
2021-03-04
11:35
Online Online [Poster Presentation] Spatially Interpolated Measurement Results of Environmental Information for Optimization of Sensor Placement and Its Evaluation
Ryoma Yasutani, Koki Kitazumi, Shusuke Narieda (Mie Univ.), Takeo Fujii (UEC), Kenta Umebayashi (TUAT), Hiroshi Naruse (Mie Univ.) RCS2020-238 SR2020-77 SRW2020-67
 [more] RCS2020-238 SR2020-77 SRW2020-67
pp.165-166(RCS), pp.58-59(SR), pp.53-54(SRW)
SIP, IT, RCS 2021-01-21
13:35
Online Online A study on SINR Characteristics of Adaptive Antenna Array based on Weight and Antenna Space Control
Shun Ishihara, Kenta Umebayashi (TUAT), Antti Tolli (UOO) IT2020-77 SIP2020-55 RCS2020-168
In this paper, we address the analysis of the performance of adaptive antenna array based on weight and antenna space co... [more] IT2020-77 SIP2020-55 RCS2020-168
pp.81-86
SR 2020-11-18
13:55
Online Online Study on Quick Detection of Video Streaming based on Spectrum Measurement
Hiroto Ebisawa, Kenta Umebayashi (TUAT), Janne Lehtomaki (University of Oulu) SR2020-27
For a dynamic channel selection/allocation in a high-dense wireless local area network (WLAN), traffic information in ea... [more] SR2020-27
pp.29-36
SR 2020-11-18
14:20
Online Online A Study on Noise Power Estimation based on Goodness of Fit Statistics
Hiroki Iwata, Kenta Umebayashi (TUAT) SR2020-28
This paper focuses on spectrum sensing and spectrum measurement exploiting an energy detector. In this case, an noise po... [more] SR2020-28
pp.37-43
IN, RCS, NV
(Joint)
2020-05-22
09:30
Online Online A Study on antenna selection criterion for adaptive array antenna based on selecting antenna elements
Takahiro Suzuki, Kenta Umebayashi (TUAT), Quang-Doanh Vu (UoO) RCS2020-18
 [more] RCS2020-18
pp.43-48
RCS, SR, SRW
(Joint)
2020-03-06
13:30
Tokyo Tokyo Institute of Technology
(Cancelled but technical report was issued)
[Poster Presentation] Measurement Results of 920MHz LoRa Propagation at Half Wavelength Intervals
Natsuki Miyoshi, Shusuke Narieda (Mie Univ.), Takeo Fujii (UEC), Kenta Umebayashi (TUAT), Hiroshi Naruse (Mie Univ.) RCS2019-406 SR2019-140 SRW2019-90
 [more] RCS2019-406 SR2019-140 SRW2019-90
pp.411-412(RCS), pp.135-136(SR), pp.135-136(SRW)
RCS, SR, SRW
(Joint)
2020-03-06
13:30
Tokyo Tokyo Institute of Technology
(Cancelled but technical report was issued)
[Poster Presentation] Monitoring of Environmental Information Based on 920MHz LoRa Networks
Ayumi Kaichi, Shusuke Narieda (Mie Univ.), Takeo Fujii (UEC), Kenta Umebayashi (TUAT), Hiroshi Naruse (Mie Univ.) RCS2019-407 SR2019-141 SRW2019-91
 [more] RCS2019-407 SR2019-141 SRW2019-91
pp.413-414(RCS), pp.137-138(SR), pp.137-138(SRW)
CS, CAS 2020-02-28
10:15
Kumamoto   Spreading Factor Allocation for End Device Lifetime Extension in LoRa Networks
Shusuke Narieda (Mie Univ.), Takeo Fujii (UEC), Kenta Umebayashi (TUAT) CAS2019-116 CS2019-116
 [more] CAS2019-116 CS2019-116
pp.105-110
SR 2019-12-05
13:50
Okinawa Ishigaki City Hall (Ishigaki Island) [Poster Presentation] 920MHz-band LoRa Radiowave Propagation Measurement Results on Each Floor in Indoor Environment
Taro Miyamoto, Shusuke Narieda (Mie Univ.), Takeo Fujii (UEC), Kenta Umebayashi (TUAT), Hiroshi Naruse (Mie Univ.) SR2019-95
 [more] SR2019-95
pp.45-46
SR 2019-12-06
10:25
Okinawa Ishigaki City Hall (Ishigaki Island) Signal Detection Theorem Based Approximated Analysis for LoRa Network Performances with LBT
Shusuke Narieda (Mie Univ.), Takeo Fujii (UEC), Kenta Umebayashi (TUAT) SR2019-101
 [more] SR2019-101
pp.69-73
SR 2019-12-06
10:50
Okinawa Ishigaki City Hall (Ishigaki Island) A Study on Setting of an Energy Detection Threshold with SNR Estimation
Hiroki Iwata, Kenta Umebayashi (TUAT) SR2019-102
Energy detection (ED) is a popular signal detection method for spectrum sensing and spectrum usage
measurement in dynam... [more]
SR2019-102
pp.75-82
SR 2019-12-06
11:15
Okinawa Ishigaki City Hall (Ishigaki Island) Energy Detection for M-QAM Signal
Shun Ishihara, Kenta Umebayashi (TUAT), Janne Lehtomaki (UOO) SR2019-103
In this paper, we address energy detection for M-ary quadrature amplitude modulation (QAM) signal.
Typically, statisti... [more]
SR2019-103
pp.83-86
SR 2019-12-06
16:15
Okinawa Ishigaki City Hall (Ishigaki Island) Energy Constrained Optimization for Spreading Factor Allocation in Unslotted ALOHA Based LoRa Networks
Shusuke Narieda (Mie Univ.), Takeo Fujii (UEC), Kenta Umebayashi (TUAT) SR2019-110
 [more] SR2019-110
pp.131-136
RISING
(2nd)
2019-11-26
10:30
Tokyo Fukutake Learning Theater, Hongo Campus, Univ. Tokyo [Poster Presentation] Energy detection for M-QAM signal
Shun Ishihara, Kenta Umebayashi (TUAT), Janne Lehtomaki (UOO)
In this presentation, we address energy detection for M-ary quadrature amplitude modulation (QAM) signal. Typically, sta... [more]
RISING
(2nd)
2019-11-26
10:30
Tokyo Fukutake Learning Theater, Hongo Campus, Univ. Tokyo [Invited Lecture] Development of a Spectrum Usage Measurement System for Dynamic Spectrum Sharing
Hiroki Iwata, Ahmed Al-Tahmeesschi, Kenta Umebayashi (TUAT)
In dynamic spectrum sharing, statistical information in terms of spectrum usage such as spectrum occupancy
rate is usef... [more]

RISING
(2nd)
2019-11-26
14:10
Tokyo Fukutake Learning Theater, Hongo Campus, Univ. Tokyo [Poster Presentation] Spectrum Occupancy Prediction based on Recurrent Neural Network with State Identification
Yoshiki Kasahara, Hiroki Iwata, Ahmed Al-Tahmeesschi, Kenta Umebayashi (TUAT)
 [more]
 Results 1 - 20 of 125  /  [Next]  
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