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Search Results: Conference Papers
 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 20  /   
Committee Date Time Place Paper Title / Authors Abstract Paper #
SR 2021-05-20
10:50
Online Online Statistic Sample Size Determination for Average Received Signal Power Using Statistical Inference
Keita Katagiri, Takeo Fujii (UEC) SR2021-3
Nowadays, a crowdsourcing-assisted radio map has attracted attention. In crowdsourcing, distributed mobile terminals obs... [more] SR2021-3
pp.16-23
SR 2021-05-21
11:15
Online Online Channel Allocation for LoRaWAN Considering Intra-System and Inter-System Interferences
Shinichiro Kakuda, Yudai Yamazaki, Keita Katagiri, Takeo Fujii (UEC), Osamu Takyu (Shinshu Univ.), Mai Ohta (Fukuoka Univ.), Koichi Adachi (UEC) SR2021-12
In low power wide area network (LPWAN), intra-system and inter-system interferences have become a crucial issue due to a... [more] SR2021-12
pp.79-85
SR 2020-11-20
10:00
Online Online Compensation of Clutter Loss Considering Antenna Height Difference and Dominant Path for Spectrum Sharing
Sunao Miyamoto, Keita Katagiri (UEC), Koya Sato (TUS), Koichi Adachi, Takeo Fujii (UEC) SR2020-39
In recent years, spectrum sharing technology is attracting attention to solve the problem of spectrum shortage. In order... [more] SR2020-39
pp.108-113
SR, NS, SeMI, RCC, RCS
(Joint)
2020-07-10
11:35
Online Online Experimental Verification of Shadowing Classification for Measurement-based Spectrum Database
Keita Katagiri (UEC), Koya Sato (TUS), Kei Inage (TMCIT), Takeo Fujii (UEC) SR2020-20
As a hybrid estimation method of the radio environment, we have proposed a shadowing classifier. In the shadowing classi... [more] SR2020-20
pp.63-70
SR 2020-06-04
14:00
Online Online Radio Propagation Extrapolation Based on Correction of Empirical CDF
Keita Katagiri, Takeo Fujii (UEC) SR2020-2
In this paper, we propose a radio propagation extrapolation method based on the correction of an empirical cumulative di... [more] SR2020-2
pp.9-16
RCS, SR, SRW
(Joint)
2020-03-06
10:00
Tokyo Tokyo Institute of Technology
(Cancelled but technical report was issued)
Radio Environment Map Updating Procedure considering Changes in Surrounding Environments
Keita Katagiri, Takeo Fujii (UEC) SR2019-132
 [more] SR2019-132
pp.105-112
SR 2019-12-05
13:50
Okinawa Ishigaki City Hall (Ishigaki Island) [Poster Presentation] Radio Propagation Estimation Considering Altitude for Spectrum Sharing between LTE/5G and Different Systems
Sunao Miyamoto, Keita Katagiri, Takeo Fujii (UEC) SR2019-89
In this paper, we discuss a radio propagation estimation considering altitude of receiving antenna. In recent years, spe... [more] SR2019-89
pp.23-24
SR 2019-12-05
13:50
Okinawa Ishigaki City Hall (Ishigaki Island) [Poster Presentation] Signal Power Map Prediction Method considering Structure Information
Yoji Uesugi, Keita Katagiri, Takeo Fujii (UEC) SR2019-90
 [more] SR2019-90
pp.25-26
SR 2019-12-06
13:00
Okinawa Ishigaki City Hall (Ishigaki Island) Radio Environment Map Updating Procedure based on Hypothesis Testing
Keita Katagiri, Takeo Fujii (UEC) SR2019-104
(To be available after the conference date) [more] SR2019-104
pp.87-94
RISING
(2nd)
2019-11-27
13:55
Tokyo Fukutake Learning Theater, Hongo Campus, Univ. Tokyo [Poster Presentation] Clustering of Signal Power Distribution Toward Low Storage Crowdsourced Spectrum Database
Yoji Uesugi, Keita Katagiri (UEC), Koya Sato (TUS), Takeo Fujii (TMCIT), Takeo Fujii (UEC)
 [more]
SR 2019-05-31
10:00
Tokyo Tokyo Big Sight [Technology Exhibit] Highly Accurate Prediction of Radio Environment for V2V Communication Systems
Keita Katagiri, Takeo Fujii (UEC) SR2019-18
An accurate estimation of radio propagation considering the geographical conditions is needed for realizing reliable veh... [more] SR2019-18
pp.107-112
SR 2019-01-24
16:35
Fukushima Corasse, Fukushima city (Fukushima prefecture) Highly Accurate Estimation of Radio Propagation using Model Classifier
Keita Katagiri, Keita Onose (UEC), Koya Sato (TUS), Kei Inage (TMCIT), Takeo Fujii (UEC) SR2018-108
A Measurement-based Spectrum Database (MSD) attracts attention as highly accurate radio environment recognition. In the ... [more] SR2018-108
pp.79-84
SR 2019-01-25
14:50
Fukushima Corasse, Fukushima city (Fukushima prefecture) High Density Spectrum Sharing Method among Micro Operators considering Mesurement-based Spectrum Database
Hirofumi Nakajo, Yuya Aoki, Keita Katagiri, Takeo Fujii (UEC) SR2018-115
In 5G, micro operator and local 5G concepts that arrange small cells with high flexibility and scalability attract atten... [more] SR2018-115
pp.117-122
SR 2019-01-25
15:15
Fukushima Corasse, Fukushima city (Fukushima prefecture) A Study on Frequency-domain Interpolation of a Radio Environment Map for Bands of Cellular System
Keita Onose, Keita Katagiri (UEC), Koya Sato (TUS), Kei Inage (TMCIT), Takeo Fujii (UEC) SR2018-116
A Measurement-based Spectrum Database (MSD) attracts attention as highly accurate radio environment recognition. It is i... [more] SR2018-116
pp.123-128
SR 2019-01-25
16:15
Fukushima Corasse, Fukushima city (Fukushima prefecture) Spectrum Database of Signal Power Distribution using Clustering
Yoji Uesugi, Keita Katagiri (UEC), Koya Sato (TUS), Kei Inage (TMCIT), Takeo Fujii (UEC) SR2018-118
 [more] SR2018-118
pp.135-140
SR 2018-10-31
10:25
Overseas Mandarin Hotel, Bangkok, Thailand [Poster Presentation] Power Control exploiting Spectrum Database for V2V Communication Systems
Keita Katagiri (UEC), Koya Sato (TUS), Takeo Fujii (UEC) SR2018-76
In order to realize reliable Vehicle-to-Vehicle (V2V) communication systems for autonomous driving, the recognition of r... [more] SR2018-76
pp.39-40
SR 2018-10-31
10:25
Overseas Mandarin Hotel, Bangkok, Thailand [Poster Presentation] Spatial Spectrum Sharing among Micro Operators considering Distribution on Measurement-based Spectrum Database
Hirofumi Nakajo, Yuya Aoki, Keita Katagiri, Takeo Fujii (UEC) SR2018-78
This paper proposes probabilistic protection of micro cells using measurement-based spectrum database. In the 5th genera... [more] SR2018-78
pp.45-46
SR 2018-01-26
11:20
Fukuoka Fukuoka univ. Highly Accurate Prediction of Signal Variation Distribution Using Surrounding Vehicles Information
Keita Katagiri, Koya Sato, Takeo Fujii (UEC) SR2017-104
 [more] SR2017-104
pp.63-68
SR 2017-05-26
10:00
Tokyo Tokyo big sight [Technology Exhibit] Construction of Radio Environment Maps for Improving Communication Reliability of Cooperative Automated Vehicles
Keita Katagiri, Koya Sato, Takeo Fujii (UEC) SR2017-13
In the current wireless distributed network systems, it is difficult to accurately estimate radio propagation characteri... [more] SR2017-13
pp.75-80
PRMU, BioX 2015-03-19
11:00
Kanagawa   View-dependent Texture Mapping-based Novel View Synthesis Considering Continuity in Texture Boundaries
Keita Katagiri, Yuta Nakashima, Tomokazu Sato, Naokazu Yokoya (NAIST) BioX2014-42 PRMU2014-162
Novel view synthesis (NVS) is a technique for synthesizing an image from an arbitrary viewpoint given by a user using mu... [more] BioX2014-42 PRMU2014-162
pp.17-22
 Results 1 - 20 of 20  /   
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