Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
RCS |
2019-10-24 15:25 |
Kanagawa |
Yokosuka Research Park |
[Invited Lecture]
R&D on Cooperative Control Schemes Suitable for Local 5G Hikaru Kawasaki, Kazuo Ibuka, Homare Murakami, Kentaro Ishizu, Takeshi Matsumura, Fumihide Kojima (NICT) RCS2019-188 |
The fifth-generation mobile system (5G) is expected to be utilized as a communication infrastructure for a variety of em... [more] |
RCS2019-188 pp.57-62 |
CS |
2019-07-05 09:25 |
Kagoshima |
Amami City Social Welfare Center |
Pilot Subcarriers in Orthogonal Precoded OFDM Hikaru Kawasaki, Takeshi Matsumura, Kentaro Ishizu, Fumihide Kojima (NICT) CS2019-40 |
Orthogonal precoded orthogonal frequency-division multiplexing (OFDM) is a OFDM scheme with an invertible precoding. As ... [more] |
CS2019-40 pp.121-126 |
CAS, CS |
2019-03-08 13:00 |
Kanagawa |
Shonan Institute of Technology |
A Study on PAPR Reduction of DFT-s-OFDM Signals via Phase Rotation Hikaru Kawasaki, Kentaro Ishizu, Fumihide Kojima (NICT) CAS2018-141 CS2018-109 |
DFT-s-OFDM has been adopted in the 4G LTE uplink (UL) which is induced by DFT-precoding to reduce high peak-to-average-p... [more] |
CAS2018-141 CS2018-109 pp.15-20 |
RCS, SR, SRW (Joint) |
2019-03-08 10:40 |
Kanagawa |
YRP |
[Invited Lecture]
NICT's R&D toward flexible utilization of self-operated wireless systems in 5G era Kentaro Ishizu, Homare Murakami, Kazuo Ibuka, Takeshi Matsumura, Stanislav Filin, Hikaru Kawasaki, Fumihide Kojima (NICT) SRW2018-71 |
[more] |
SRW2018-71 pp.67-72 |
CS |
2018-07-12 13:30 |
Okinawa |
Eef Information Plaza (Kumejima Is.) |
[Invited Talk]
An Improvement of OP-DFT-s-OFDM for Spectrum Sharing Hikaru Kawasaki, Kentaro Ishizu, Fumihide Kojima (NICT) CS2018-28 |
DFT-s-OFDM has been adopted in the 4G LTE uplink which is induced by DFT-precoding to reduce high peak-to-average-power ... [more] |
CS2018-28 pp.77-82 |
CS, CAS |
2018-03-13 09:20 |
Fukuoka |
Nishijin Plaza, Kyushu University |
A Proposal of Orthogonal Precoded DFT-s-OFDM for Spectrum Sharing Hikaru Kawasaki, Kentaro Ishizu, Fumihide Kojima (NICT) CAS2017-146 CS2017-100 |
DFT-s-OFDM has been adopted in the 4G LTE uplink which is induced by DFT-precoding to reduce high peak-to-average-power ... [more] |
CAS2017-146 CS2017-100 pp.75-80 |
SRW |
2017-11-14 11:15 |
Tokyo |
NICT (Koganei) |
[Invited Lecture]
Efficient Radio Access for Massive Machine-Type Communication Masafumi Moriyama, Kenichi Takizawa, Masayuki Oodo, Hayato Tezuka, Hikaru Kawasaki, Changwoo Pyo, Homare Murakami, Kentaro Ishidu, Fumihide Kojima (NICT) SRW2017-56 |
[more] |
SRW2017-56 pp.51-56 |
SR, SRW (Joint) |
2017-10-24 14:00 |
Overseas |
Grand Hotel Palatino, Rome, Italy |
[Poster Presentation]
A Proposal for Carrier Sense using Control Channel in LTE Systems
-- Toward Spectrum Sharing between Different Operators -- Hikaru Kawasaki, Kazuo Ibuka, Kentaro Ishizu, Fumihide Kojima (NICT) SR2017-88 SRW2017-38 |
In spectrum sharing, Carrier Sense (CS) to detect other radio entities is very important in situations where coordinatio... [more] |
SR2017-88 SRW2017-38 pp.61-62(SR), pp.55-56(SRW) |
CAS, CS |
2017-02-24 16:25 |
Shiga |
|
A Study on Computational Complexity Reduction of Orthogonal Precoding for Sidelobe Suppression of OFDM Signals Hikaru Kawasaki, Takahiro Matsui, Masaya Ohta, Katsumi Yamashita (OPU) CAS2016-136 CS2016-97 |
N-continuous OFDM is a precoding method for sidelobe suppression of orthogonal frequency division multiplexing (OFDM) si... [more] |
CAS2016-136 CS2016-97 pp.123-127 |
CS, CAS |
2016-02-25 13:55 |
Wakayama |
Laforet Nanki-Shirahama Hotel |
A Study on Computational Complexity Reduction of Orthogonal Precoding for Cognitive Radio Systems Hikaru Kawasaki, Masaya Ohta, Katsumi Yamashita (Osaka Pref. Univ.) CAS2015-81 CS2015-86 |
その研究内容はこちらになりまして、信号処理アルゴリズムという理論面とそのFPGAによる実装面の両方の研究を行っています。
これによって有限である周波数資源を効率的に利用し,トラヒック増大の問題を解決したいと考えています。
Ort... [more] |
CAS2015-81 CS2015-86 pp.7-11 |
CS |
2015-07-02 14:15 |
Okinawa |
Eef Information Plaza (Kumejima Is.) |
[Invited Talk]
FPGA Implementation of NCSP-OFDM for Sidelobe Suppression Hikaru Kawasaki, Masaya Ohta, Katsumi Yamashita (Osaka Pref. Univ.) CS2015-18 |
$N$-continuous symbol padding OFDM (NCSP-OFDM) is a precoding technique that achieves a lower-sidelobe transmission sign... [more] |
CS2015-18 pp.51-54 |
CAS, CS |
2015-02-26 09:30 |
Tottori |
Tottori University |
Performance Evaluation of N-continuous Symbol Padding OFDM Hikaru Kawasaki, Masaya Ohta, Katsumi Yamashita (Osaka Pref. Univ.) CAS2014-120 CS2014-92 |
[more] |
CAS2014-120 CS2014-92 pp.1-6 |