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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 34  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
SeMI 2022-01-21
09:40
Nagano
(Primary: On-site, Secondary: Online)
[Short Paper] Study of ACK-Less Rate Adaptation for IEEE 802.11bc Using Deep Reinforcement Learning
Takamochi Kanda (Kyoto Univ.), Yusuke Koda (Univ. of Oulu), Yuto Kihira, Koji Yamamoto (Kyoto Univ.), Takayuki Nishio (Kyoto Univ./Tokyo Tech.) SeMI2021-74
This paper introduces an ACK-less rate adaptation to locational variation of recipient stations (STAs) for broadcast wir... [more] SeMI2021-74
pp.86-88
SeMI, RCS, NS, SR, RCC
(Joint)
2019-07-10
15:20
Osaka I-Site Nanba(Osaka) A Study on Concatenated Beam- and Antenna- domain Layered BP for Large MIMO Detection
Takumi Takahashi (Osaka Univ.), Antti Tolli (Univ. of Oulu), Shinsuke Ibi (Doshisha Univ.), Seiichi Sampei (Osaka Univ.) RCC2019-15 NS2019-48 RCS2019-105 SR2019-24 SeMI2019-24
This paper proposes a concatenated beam- and antenna-domain belief propagation (BP) for realizing low-complexity large m... [more] RCC2019-15 NS2019-48 RCS2019-105 SR2019-24 SeMI2019-24
pp.21-26(RCC), pp.31-36(NS), pp.25-30(RCS), pp.31-36(SR), pp.35-40(SeMI)
SeMI, RCS, NS, SR, RCC
(Joint)
2019-07-11
09:35
Osaka I-Site Nanba(Osaka) A study on Auto-Regressive modeling of Duty Cycle
Kohei Okawa, Hiroki Iwata, Kenta Umebayashi (Tokyo Univ. of Agriculture and Tech.), Janne Lehtomäki (Univ. of Oulu), Miguel López-Benítez (Univ. of Liver), Satya Joshi (Univ. of Oulu) SR2019-29
In dynamic spectrum sharing, it is useful to exploit statistical information on spectrum usage.
In this paper, we inve... [more]
SR2019-29
pp.59-64
RCS 2019-04-19
10:20
Hokkaido Noboribetsu Grand Hotel Channel Estimation Using Long-term Channel Statistics for BP-based Large MIMO Detection
Takumi Takahashi (Osaka Univ.), Antti Tolli (Univ. of Oulu), Shinsuke Ibi (Doshisha Univ.), Seiichi Sampei (Osaka Univ.) RCS2019-15
This paper proposes a novel de-noising method for realizing low-complexity channel estimation using long-term channel st... [more] RCS2019-15
pp.67-72
RCS, SR, SRW
(Joint)
2019-03-06
10:30
Kanagawa YRP A Study on Layered Belief Propagation for Large MIMO Detection based on Statistical Beams
Takumi Takahashi (Osaka Univ.), Antti Tolli (Univ. of Oulu), Shinsuke Ibi, Seiichi Sampei (Osaka Univ.) RCS2018-285
This paper proposes a novel layered belief propagation (BP) detector with a concatenated structure of two different BP l... [more] RCS2018-285
pp.19-24
SR 2018-05-25
10:00
Tokyo Tokyo big sight [Technology Exhibit] Development of Spectrum Usage Measurement System Prototype for Smart Spectrum Access -- Prediction of Spectrum Occupancy --
Hiroki Iwata, Kenta Umebayashi, Ryo Sato, Kento Yamada, Kohei Okawa, Yoshiki Kasahara (TUAT), Janne Lehtomaki (Univ. of Oulu), Miguel Lopez-Benitez (Univ. of Liverpool) SR2018-17
Smart spectrum access (SSA) can achieve a high-efficient spectrum sharing utilizing the prior information regarding spec... [more] SR2018-17
pp.99-106
RCS, SR, SRW
(Joint)
2018-03-02
10:50
Kanagawa YRP Spectrum usage model for Smart Spectrum Access
Kento Yamada, Kenta Umebayashi (TUAT), Janne Lehtomaki, Shashika Manosha Kapuruhamy Badalge (Univ. of Oulu) SR2017-133
In a smart spectrum access, the statistical information in terms of spectrum usage can enhance a spectrum sharing dramat... [more] SR2017-133
pp.109-116
SR 2018-01-26
09:30
Fukuoka Fukuoka univ. A study on parameter setting of Welch FFT-Energy Detection in Spectrum Measurement
Yoshitaka Tamaki, Kenta Umebayashi (Tokyo Univ. of Agriculture and Technology), Janne Lehtomaki (Univ. of Oulu), Miguel Lopez-Benitez (Univ. of Liverpool) SR2017-100
Dynamic Spectrum Access (DSA) can be enhanced by statistical information of actual spectrum usage. The information is av... [more] SR2017-100
pp.35-42
RCS 2017-10-19
09:20
Miyagi Tohoku Institute of Technology Antenna spacing control for adaptive array antenna based on weight and antenna spacing control
Yoshimasa Kimoto, Kenta Umebayashi (TUAT), Antti Tolli (Univ. of Oulu) RCS2017-169
 [more] RCS2017-169
pp.7-12
RCS, RCC, ASN, NS, SR
(Joint)
2016-07-20
15:50
Aichi   A Study on Design of Non-uniform Linear Antenna Array based on Antenna Selection
Yoshinobu Makino, Kenta Umebayashi (TUAT), Antti Tolli (Univ. of Oulu) RCS2016-99
In interference suppression based on beamforming with array antenna, the possible number of interference waves to be sup... [more] RCS2016-99
pp.29-34
SR, RCC, MICT, RCS, SRW
(Joint)
(2nd)
2016-05-16
- 2016-05-17
Overseas Hotel Lasaretti, Oulu, Finland [Requested Talk] Nokia vision on 5G
Jari Hulkkonen (Nokia), Olli Liinamaa (Nokia and Univ. of Oulu)
5G is the new generation of radio systems and network architecture delivering extreme broadband and ultra robust, low la... [more]
SR, SRW
(Joint)
2016-05-16
14:30
Overseas Hotel Lasaretti, Oulu, Finland [Poster Presentation] A study on FFT-ED based signal area estimation for spectrum awareness
Riki Mizuchi, Kenta Umebayashi (TUAT), Janne Lehtomaki (Univ. of Oulu), Miguel Lopez-Benitez (Univ. of Liverpool) SR2016-9 SRW2016-9
For achieving 2-layer smart spectrum access (SSA) which corresponds to feasible strategy of DSA, a development of spectr... [more] SR2016-9 SRW2016-9
pp.27-34
SR, RCC, MICT, RCS, SRW
(Joint)
(2nd)
2016-05-16
- 2016-05-17
Overseas Hotel Lasaretti, Oulu, Finland [Poster Presentation] Advanced FPGA/ASIC Development
Teemu Aura, Olga Kayo (Nokia), Jukka Lahti, Janne Janhunen (Univ. of Oulu)
Novel 5G innovations and technologies are rapidly coming into market. One of the main requirement for the new systems is... [more]
SR 2016-01-21
13:00
Nagasaki Fukue-bunka-kaikan Analysis of low-cost Welch FFT segment size selection method for spectrum usage measurement
Hiroki Iwata, Kenta Umebayashi (TUAT), Janne Lehtomaki (Univ. of Oulu), Yasuo Suzuki (TUAT) SR2015-72
Smart Spectrum Access (SSA), which is an advanced Dynamic Spectrum Access (DSA) exploits any statistical information of ... [more] SR2015-72
pp.1-8
SR 2016-01-21
13:25
Nagasaki Fukue-bunka-kaikan A study on threshold setting for spectrum sensing based on spectrum utilization rate
Kazuhiro Hayashi, Kenta Umebayashi (TUAT), Janne Lehtomaki (Univ. of Oulu), Yasuo Suzuki (TUAT) SR2015-73
In this paper, we investigate threshold setting for spectrum sensing based on statistics of spectrum usage for spectrum ... [more] SR2015-73
pp.9-15
SR 2016-01-22
14:20
Nagasaki Fukue-bunka-kaikan A study on parameter setting method of false alarm removal for spectrum awareness
Riki Mizuchi, Kenta Umebayashi (TUAT), Janne Lehtomaki (Univ. of Oulu), Miguel Lopez-Benitez (Univ. of Liverpool), Yasuo Suzuki (TUAT) SR2015-87
In dynamic spectrum access, statistical information of Primary User (PU) enables more reliable and efficient spectrum sh... [more] SR2015-87
pp.101-108
SR, SRW
(Joint)
(2nd)
2015-10-26
09:20
Tokyo KKE [Tutorial Lecture] Spectrum Measurement and Modeling for Spectrum Awareness in Cognitive Wireless Systems
Kenta Umebayashi (TUAT), Miguel López-Benítez (Univ. of Liverpool), Janne Lehtomaki (Univ. of Oulu), Samuli Tiiro (TUAT)
 [more]
SR, SRW
(Joint)
(2nd)
2015-10-27
09:30
Tokyo KKE [Poster Presentation] Achieving Cooperation in Inter-operator Infrastructure Sharing
Keigo Hasegawa (Hitachi Kokusai Electric/Univ. of Oulu), Zaheer Khan (Univ. of Oulu), Kenta Umebayashi (TUAT), Alhussein Abouzeid (RPI/Univ. of Oulu), Matti Latva-aho (Univ. of Oulu)
Infrastructure sharing is considered a potential cost-effective solution for solving the overflow demand problem in cell... [more]
RCS 2015-06-26
10:53
Hokkaido Hokkaido Univ. Derivation of Non-uniform Linear Array Arrangement for Interference Suppression under Line-of-Sight Propagation
Yoshinobu Makino, Kenta Umebayashi (TUAT), Antti Tolli (Univ. of Oulu), Yasuo Suzuki (TUAT) RCS2015-93
In this paper, we investigate a low-complexity method for linear array antenna arrangement to suppress interference usin... [more] RCS2015-93
pp.275-280
SR 2015-01-30
13:50
Hokkaido KKR Hakodate Welch FFT segment size selection method for Duty Cycle estimation
Hiroki Iwata, Kenta Umebayashi, Samuli Tiiro (TUAT), Janne Lehtomaki (Univ. of Oulu), Yasuo Suzuki (TUAT) SR2014-110
In dynamic spectrum access (DSA) and the scenario with dynamic primary user (PU), spectrum sensing with reasonably low c... [more] SR2014-110
pp.101-108
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