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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 31  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
RCS 2023-06-16
09:40
Hokkaido Hokkaido University, and online
(Primary: On-site, Secondary: Online)
Considerations on Self-Interference Canceller using DMRS in Full-Duplex Mobile Communications
Takumi Yasaka (Kogakuin Univ.), Takayuki Yamada, Satoshi Suyama (NTT DOCOMO), Hiroyuki Otsuka (Kogakuin Univ.) RCS2023-66
Full-duplex mobile communications have been discussed as one of the duplex technologies to increase the spectral efficie... [more] RCS2023-66
pp.224-228
RCS, NS
(Joint)
2022-12-16
14:35
Aichi Nagoya Institute of Technology, and Online
(Primary: On-site, Secondary: Online)
[Invited Lecture] Personal Picocell Scheme in Heterogeneous Mobile Networks
Hiroyuki Otsuka (Kogakuin Univ.) NS2022-146 RCS2022-204
Heterogeneous networks (HetNets), which are combined with a macrocell and picocell in the same coverage, are promising t... [more] NS2022-146 RCS2022-204
p.84(NS), p.95(RCS)
RCS 2021-06-24
13:50
Online Online A Study on How to Optimize the Transmission Power of pico-eNB in Multiband HetNets
Ayumi Yoneyama (Kogakuin Univ.), Satoshi Suyama, Takahiro Asai (NTT DOCOMO), Hiroyuki Otsuka (Kogakuin Univ.) RCS2021-58
Two types of fifth-generation (5G) mobile systems have been diffused worldwide. One is called as 5G New Radio (NR) SA (S... [more] RCS2021-58
pp.175-179
RCS 2021-06-25
09:10
Online Online User Throughput of Multiband HetNet using 28 GHz Band against Fading Channel Models
Shoko Nishimura, Hiroyuki Otsuka (Kogakuin Univ) RCS2021-62
At present, 3.9 generation LTE (Long Term Evolution) and its extension LTE-Advanced are mainly used in Japan. 5G NSA, a ... [more] RCS2021-62
pp.193-195
RCS, SR, SRW
(Joint)
2020-03-06
15:00
Tokyo Tokyo Institute of Technology
(Cancelled but technical report was issued)
[Invited Lecture] Personal-cell Scheme for Heterogeneous Networks
Hiroyuki Otsuka (Kogakuin Univ.) RCS2019-394
 [more] RCS2019-394
p.377
SeMI, RCS, NS, SR, RCC
(Joint)
2019-07-11
09:10
Osaka I-Site Nanba(Osaka) Improvement Effect of Adaptive Control CRE for Multicarrier HetNets using 3.4 GHz
Kento Fujisawa, Hiroyuki Otsuka (Kogakuin Univ.) RCS2019-109
Heterogeneous Network (HetNet) using multiple carrier frequencies are expected to increase system capacity in fifth-gene... [more] RCS2019-109
pp.45-49
SeMI, RCS, NS, SR, RCC
(Joint)
2019-07-11
09:35
Osaka I-Site Nanba(Osaka) A study on Modulation and Coding Scheme in Multicarrier HetNets using 28 GHz Band
Fumiya Kemmochi, Hiroyuki Otsuka (Kogakuin Univ.) RCS2019-110
Millimeter wave (mmWave) technology is expected to achieve higher data rates in fifth-generation (5G) mobile systems. We... [more] RCS2019-110
pp.51-55
RCS 2018-06-20
14:30
Nagasaki Nagasaki University Interference Tolerance for Fiber-optic Inband Relaying with Simultaneous Transmission
Hiroki Utatsu (Kogakuin Univ.), Jun Mashino, Satoshi Suyama (NTT DOCOMO), Hiroyuki Otsuka (Kogakuin Univ.) RCS2018-41
Relaying is a key technology to improve cell-edge performance and/or provide wider radio coverage. We have proposed fibe... [more] RCS2018-41
pp.37-42
RCS 2018-06-22
10:00
Nagasaki Nagasaki University Considerations for Superposed Modulation Combined with QPSK and 256-QAM in NOMA.
Koki Senda, Hiroyuki Otsuka (Kogakuin Univ.) RCS2018-66
Non-orthogonal multiple access (NOMA) is a potential candidate for the 5th-generation mobile systems (5G). In NOMA, two ... [more] RCS2018-66
pp.185-189
RCS 2018-06-22
10:10
Nagasaki Nagasaki University BER Performance of OFDM-based 1024/4096-QAM in Multipath Fading Conditions
Ruxiao Tian, Hiroyuki Otsuka (Kogakuin Univ.) RCS2018-67
Higher-order modulation is promising technique of 5th-generation mobile systems to increase data rate within a limited b... [more] RCS2018-67
pp.191-194
AP, RCS
(Joint)
2017-11-08
17:10
Fukuoka Fukuoka University The effect of 3D beamforming on backhaul link in relaying networks
Ryota Nakao (Kogakuin Univ.), Jun Mashino, Satoshi Suyama (NTT DOCOMO), Hiroyuki Otsuka (Kogakuin Univ.) RCS2017-219
Relaying is a key technology used to improve cell-edge user throughput and/or provide wider coverage. Three-dimensional ... [more] RCS2017-219
pp.81-86
RCS 2017-06-23
15:10
Okinawa Ishigaki Shoukou Kaikan Proposal of CQI Table Switching Control for Cell Range Expansion in HetNet
Norihiro Naganuma, Kai Osawa, Hiroyuki Otsuka (Kogakuin Univ.) RCS2017-90
Higher-order modulation such as 256-quadrature amplitude modulation (QAM) is a key technology to increase data rates wit... [more] RCS2017-90
pp.239-244
RCS 2017-06-23
15:35
Okinawa Ishigaki Shoukou Kaikan Throughput Performance of 256-QAM using different types of MCS in small cells
Kai Osawa, Norihiro Naganuma, Hiroyuki Otsuka (Kogakuin Univ.) RCS2017-91
Higher-order modulation is a key technology to increase data rates within a limited bandwidth. This paper describes the ... [more] RCS2017-91
pp.245-250
RCS, SR, SRW
(Joint)
2017-03-03
17:50
Tokyo Tokyo Institute of Technology The Design of Small Cell Based on Macro/Micro Cells Parameters and Consideration for256-QAM to Small Cells
Kazuya Fujiwara, Kai Osawa, Norihiro Naganuma, Hiroyuki Otsuka (Kogakuin Univ.) RCS2016-337
This paper presents the design of small cells based on the parameters of existing micro and/or micro cell systems, and p... [more] RCS2016-337
pp.271-276
SRW 2016-12-19
11:15
Tokyo Tokyo City Univ., Setagaya Campus Performance Evaluation of Learning-based 60GHz band Coverage Detection Method for Multi-band WLAN Using Result of Propagation Measurement
Hiroyuki Otsu, Takuya Kawatani, Masahiro Umehira, Shigeki Takeda (Ibaraki Univ.) SRW2016-60
In RSSI (Received Signal Strength Indicator) based 60 GHz band coverage detection scheme for 2.4/5/60GHz Multi-band WLAN... [more] SRW2016-60
pp.19-24
SAT, RCS
(Joint)
2016-08-19
14:55
Miyagi Tohoku Gakuin University Parameter Optimization for Enhanced Adaptive Control CRE in Heterogeneous Networks
Sho Nakazawa, Hiroyuki Otsuka (Kogakuin Univ.) RCS2016-147
We propose an enhanced cell range expansion (CRE) technique in a heterogeneous network (HetNet) to increase the system c... [more] RCS2016-147
pp.101-106
RCS, CCS, SR, SRW
(Joint)
2016-03-02
10:50
Tokyo Tokyo Institute of Technology Design and Performance of Learning-based 60GHz band WLAN Coverage Detection Method for Multi-band WLAN
Hiroyuki Otsu, Masahiro Umehira, Sigeki Takeda, Teruyuki Miyajima, Kenichi Kagosima (Ibaraki Univ.) SRW2015-74
A RSSI (Received Signal Strength Indicator) based 60 GHz band WLAN coverage detection scheme assuming free space loss of... [more] SRW2015-74
pp.23-28
NS, RCS
(Joint)
2015-12-18
11:50
Ehime Matsuyama Community Center DUR Performance of Fiber-optic Inband Relaying as parameters of carrier frequency and optical fiber length
Youhei Hanzawa, Sho Nakazawa (Kogakuin Univ.), Takahiro Kubo, Takahiro Asai, Yukihiko Okumura (NTT DOCOMO), Hiroyuki Otsuka (Kogakuin Univ.) RCS2015-266
We have proposed fiber-optic relaying to improve cell edge performance, and have discussed the design methods. Especiall... [more] RCS2015-266
pp.133-138
NS, RCS
(Joint)
2015-12-18
16:30
Ehime Matsuyama Community Center Adaptive Control CRE with Consideration for both Ratios of UEs Connected to Pico and Received SINR distribution for UEs
Sho Nakazawa (Kogakuin Univ.), Satoshi Suyama, Yukihiko Okumura (NTT DOCOMO), Hiroyuki Otsuka (Kogakuin Univ.) RCS2015-279
 [more] RCS2015-279
pp.207-212
RCS 2015-06-26
14:35
Hokkaido Hokkaido Univ. Considerations for New Entries of OFDM with 256- and 1024-QAM in Mobile Systems
Mitsutoshi Nakamura, Hiroyuki Otsuka (Kogakuin Univ.) RCS2015-97
This paper presents the transmission performance of OFDM using a higher order modulation scheme such as 256- and 1024-QA... [more] RCS2015-97
pp.299-303
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