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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| EA, SIP, SP, IPSJ-SLP [detail] | 2022-03-02 15:35 |
Okinawa | (Primary: On-site, Secondary: Online) |
[Poster Presentation]
A study of shout detection for clipped speech Taito Ishida, Kazuhiro Matsuda, Takahiro Fukumori, Yoichi Yamashita (Ritsumeikan Univ.)  EA2021-97 SIP2021-124 SP2021-82 |
Recently, several audio surveillance systems using shouted speech have been proposed for safety in daily life. Although... [more] |
EA2021-97 SIP2021-124 SP2021-82 pp.207-212 |
| RCS | 2021-10-22 13:50 |
Online | Online | Study on Performance Improvement of Radio-Wave Encrypted Modulation by LLR Clipping Mamoru Okumura, Keisuke Asano, Takumi Abe, Eiji Okamoto (NIT), Tetsuya Yamamoto (Panasonic) RCS2021-137 |
In recent years, physical layer security technologies that encrypt the physical layer using information theory have attr... [more] | RCS2021-137 pp.100-105 |
| RCS | 2020-06-25 13:25 |
Online | Online | PC-Signal-Based PAPR Reduction Using Null Space in MIMO Channel for MIMO-OFDM Signals under Frequency-Selective Fading Channel Leon Yamaguchi (Tokyo Univ. of Science), Nobuhide Nonaka (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2020-36 |
In this paper, we propose a computational complexity-efficient algorithm for the adaptive peak-to-average power ratio (P... [more] | RCS2020-36 pp.79-84 |
| SP, EA, SIP | 2020-03-02 13:00 |
Okinawa | Okinawa Industry Support Center (Cancelled but technical report was issued) |
[Poster Presentation]
Restoration of clipped signal using oversampling based on differentiable and convex loss function Natsuki Ueno, Shoichi Koyama, Hiroshi Saruwatari (Univ. Tokyo) EA2019-126 SIP2019-128 SP2019-75 |
A signal reconstruction method of clipped time-continuous signal using oversampling is proposed. The signal reconstructi... [more] | EA2019-126 SIP2019-128 SP2019-75 pp.147-152 |
| IT, SIP, RCS | 2020-01-23 10:50 |
Hiroshima | Hiroshima City Youth Center | Parallelly Processed Adaptive PAPR Reduction Method Using Null Space in MIMO Channel based on Peak Cancellation Signal for MIMO-OFDM Signals Taku Suzuki, Mikihito Suzuki, Kenichi Higuchi (Tokyo Univ. of Science) IT2019-42 SIP2019-55 RCS2019-272 |
In this paper，an algorithm to reduce the required iterations for the peak-to-average power ratio (PAPR) reduction is pro... [more] | IT2019-42 SIP2019-55 RCS2019-272 pp.37-43 |
| RCS | 2019-06-19 16:45 |
Okinawa | Miyakojima Hirara Port Terminal Building | On Application of Clipping and Filtering toa OFDM-IM Signals Kyoka Ujisawa, Hideki Ochiai (Yokohama National Univ.) RCS2019-62 |
The well-known drawback of orthogonal frequency division multiplexing with index modulation~(OFDM-IM) signals is its hi... [more] | RCS2019-62 pp.149-154 |
| RCS | 2019-06-20 09:40 |
Okinawa | Miyakojima Hirara Port Terminal Building | Investigation on Efficient Construction Scheme of Peak Cancellation Signals in Complexity-Reduced PAPR Reduction Method Using Null Space in MIMO Channel for MIMO-OFDM Signals Taku Suzuki, Mikihito Suzuki (Tokyo Univ. of Science), Yoshihisa Kishiyama (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2019-64 |
In this paper, we investigate efficient construction schemes of the peak cancellation (PC) signals in the complexity-red... [more] | RCS2019-64 pp.161-167 |
| RCS | 2019-06-21 15:25 |
Okinawa | Miyakojima Hirara Port Terminal Building | Complexity-Reduced Algorithm for Adaptive PAPR Reduction Method Using Null Space in MIMO Channel for MIMO-OFDM Signals Mikihito Suzuki, Taku Suzuki (Tokyo Univ. of Science), Yoshihisa Kishiyama (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2019-97 |
In this paper, we propose a computational complexity-reduced algorithm for our previously reported adaptive peak-to-aver... [more] | RCS2019-97 pp.353-358 |
| RCS | 2018-10-19 13:55 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | [Invited Lecture]
Analysis on the Performance of Adaptive PAPR Reduction Method Using Null Space in MIMO Channel for Massive MIMO-OFDM Signals Kenichi Higuchi (Tokyo Univ. of Science) RCS2018-172 |
This paper analyzes the impact of the applied beamforming (BF) method on the performance of our previously reported adap... [more] | RCS2018-172 pp.115-120 |
| RCS | 2018-06-22 09:30 |
Nagasaki | Nagasaki University | Combination of Beamforming with Per-Antenna Power Constraint and Adaptive PAPR Reduction Method Using Null Space in MIMO Channel for Multiuser Massive MIMO-OFDM Transmission Mikihito Suzuki (Tokyo Univ. of Science), Kiichi Tateishi (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2018-63 |
In this paper, we investigate a combination of the beamforming (BF) with per-antenna power limitation and adaptive peak-... [more] | RCS2018-63 pp.167-172 |
| SIP, IT, RCS | 2018-01-22 14:20 |
Kagawa | Sunport Hall Takamatsu | A CDMA System with Binary Z-connectable Complete Complementary Codes Hikaru Mizuyoshi, Terumasa Sato, Chenggao HAN (UEC) IT2017-70 SIP2017-78 RCS2017-284 |
Conventional convolutional spreading code division multiple access (CS-CDMA) provides inter-channel interference-free (I... [more] | IT2017-70 SIP2017-78 RCS2017-284 pp.91-96 |
| AP, RCS (Joint) |
2017-11-08 11:15 |
Fukuoka | Fukuoka University | A low-complexity trellis shaping approach for PAPR reduction of OFDM signals Junya Watanabe, Hideki Ochiai (Yokohama Nat. Univ.) RCS2017-209 |
In order to mitigate high peak-to-average power ratio (PAPR) problem of orthogonal frequency-division multiplexing (OFDM... [more] | RCS2017-209 pp.29-34 |
| RCS | 2017-06-23 11:00 |
Okinawa | Ishigaki Shoukou Kaikan | Performance Evaluations on Adaptive PAPR Reduction Method Using Null Space of MIMO Channel for Eigenmode Massive MIMO-OFDM Signals Yuki Matsumoto (Tokyo Univ. of Science), Kiichi Tateishi (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2017-85 |
The combination of massive multiple-input multiple-output (MIMO) with beamforming (BF) and orthogonal frequency division... [more] | RCS2017-85 pp.209-214 |
| EMM | 2017-03-06 14:30 |
Okinawa | Miyakojima Marin Terminal Building (Okinawa) | [Poster Presentation]
Consideration of watermarking method introduced KAZE features Yuka Fukada, Masaki Kawamura (Yamaguchi Univ.) EMM2016-86 |
We evaluate robustness of a digital watermarking method using KAZE features. Watermarks need to be extracted from distor... [more] | EMM2016-86 pp.1-6 |
| EMM | 2017-01-30 15:45 |
Miyagi | Tohoku University (Miyagi) | A Digital Watermarking Technique Based on Musical Characteristics and Distortion Effects Yuto Matsunaga (Hokkaido Univ.), Tetsuya Kojima (NIT, Tokyo College) EMM2016-78 |
In this work, we propose two methods of digital watermarking that construct the stego signal with only embedded informat... [more] | EMM2016-78 pp.25-30 |
| RCS | 2016-06-24 10:20 |
Okinawa | Univ. of the Ryukyus | On Complexity Reduction of Trellis Shaped OFDM Signal with Reduced PAPR using Clipping-based Metric. Junya Watanabe, Hideki Ochiai (Yokohama Nat. Univ.) RCS2016-82 |
Trellis shaping (TS) is a signal control technique that makes use of the structure of convolutional code, and it is appl... [more] | RCS2016-82 pp.209-214 |
| SRW | 2015-08-24 14:40 |
Tokyo | Shibaura Institute of Technology | A compensation method of non-linear distortion in LED visible light communications Hiroaki Matsuno, Shigeru Tomisato, Satoshi Denno, Masaharu Hata (Okayama Univ.), Tatsuo Furuno, Yasuhiro Oda (NTT DOCOMO) SRW2015-20 |
In visible light communications using light emitting diodes (LEDs), non-linear distortion caused by LED non-linearity de... [more] | SRW2015-20 pp.55-58 |
| RCS | 2015-06-24 14:20 |
Hokkaido | Hokkaido Univ. | On Receiver Side Performance of Coded OFDM System with Active Constellation Extension Ryota Yoshizawa, Hideki Ochiai (YNU) RCS2015-50 |
Active constellation extension is a peak-to-average power ratio (PAPR) reduction scheme for orthogonal frequency-divisio... [more] | RCS2015-50 pp.25-30 |
| NS, IN (Joint) |
2015-03-03 13:40 |
Okinawa | Okinawa Convention Center | Study of PC-cluster based on-demand high-resolution video clipping system using HaaS enviroment Hiroyuki Kimiyama, Masahiko Kitamura (NTT), Takashi Kohno (NTT IT), Mitsuru Maruyama (Kanagawa Institute of Tech.), Tatsuya Fujii (NTT) NS2014-247 |
UHD video has four times or more quantity of information than HDTV that can display on TV in ordinary home. We can devel... [more] | NS2014-247 pp.409-414 |
| SRW | 2014-10-27 14:25 |
Chiba | Chiba University | Performance Improvement for VLC-OFDM using FSS and PPS Yosuke Fujii, Chang-Jun Ahn, Tatsuya Omori, Ken-ya Hashimoto (Chiba Univ.) SRW2014-31 |
Visible light communication has been attracted attention because of its ubiquitous and safety. However, faults of LED co... [more] | SRW2014-31 pp.37-41 |
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