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All Technical Committee Conferences (Searched in: All Years)
| 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 |
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| 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 |
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