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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 #
COMP 2024-03-14
11:00
Tokyo The University of Electro-Communications Proof of NP-completeness of Tasukuea
Chiho Fukunaga, Seiya Okubo (Univ. of Shizuoka) COMP2023-29
In this study, we prove that the existence determination of a solution is NP-complete problem for Tasukuea, a kind of co... [more] COMP2023-29
pp.6-13
RCS, SR, SRW
(Joint)
2024-03-15
14:15
Tokyo The University of Tokyo (Hongo Campus), and online
(Primary: On-site, Secondary: Online)
[Encouragement Talk] Considerations on Computational Complexity Reduction in Channel Prediction Based on Multipath Separation for Sub-THz-Band Communications
Daigo Mochizuki, Toshihiko Nishimura, Takanori Sato, Yasutaka Ogawa (Hokkaido Univ.), Junichiro Hagiwara (Mukogawa Women's Univ.), Takeo Ohgane (Hokkaido Univ.) RCS2023-288
In sixth-generation mobile communications, a sub-THz band will be used for extreme high-data rate communication. Because... [more] RCS2023-288
pp.152-157
SeMI, RCS, RCC, NS, SR
(Joint)
2023-07-13
13:25
Osaka Osaka University Nakanoshima Center + Online
(Primary: On-site, Secondary: Online)
Peak Cancellation Signal-Based PAPR Reduction Method Using Null Space in MIMO Channel for MIMO-OFDM Signals under Frequency-Selective Fading Channel
Jun Saito, Kenichi Higuchi (Tokyo Univ. of Science) RCS2023-92
In this paper, we propose a parallel peak cancellation (PC) method in the peak-to-average power ratio (PAPR) reduction u... [more] RCS2023-92
pp.64-69
RCS, NS
(Joint)
2022-12-15
11:40
Aichi Nagoya Institute of Technology, and Online
(Primary: On-site, Secondary: Online)
Evaluation of MMSE Postcoding Schemes for Reducing Inter-cluster-interference in A Cellular Distributed MU-MIMO System
Ryo Takahashi, Hidenori Matsuo, Fumiyuki Adachi (Tohoku Univ.) RCS2022-189
Cellular distributed multi-user MIMO (MU-MIMO) is a system in which a large number of distributed antennas deployed over... [more] RCS2022-189
pp.25-30
COMP 2022-03-06
10:30
Online Online EXPTIME-Completeness of Generalized Tsume-Chushogi
Akihiro Uejima, Yuya Kiba, Junichi Omori, Masaaki Sato (Osaka Electro-Communication Univ.) COMP2021-32
We consider the `Tsume-ChuShogi' that restricted chushogi such that at every turn, the attack-side player (the first pla... [more] COMP2021-32
pp.8-15
AP, RCS
(Joint)
2021-11-10
14:55
Nagasaki NBC-Bekkan (Nagasaki)
(Primary: On-site, Secondary: Online)
Computational Complexity Reduction of High Accuracy Fingerprint Method by using Last Received Data on Time Series and correcting Receiving Performance deference
Takahiro Tsujino, Teruya Fujii (Tokyo Tech) RCS2021-151
As a location detection method without using GPS, there is a fingerprint method. It measures the received radio wave pow... [more] RCS2021-151
pp.40-45
RCS 2021-06-23
13:20
Online Online Investigation on Complexity Reduction in Peak Cancellation Signal-Based PAPR Reduction Method Using Null Space in MIMO Channel
Kenta Hosoi (Tokyo Univ. of Science), Nobuhide Nonaka (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2021-38
In this paper, we propose an algorithm to further reduce the computational complexity of the peak-to-average power ratio... [more] RCS2021-38
pp.56-61
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
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
AP 2019-08-22
10:25
Hokkaido Hokkai-Gakuen Univ. Block Diagonalization using Pseudo Inverse Matrix for MU-MIMO
Keiya Uchida, Mitoshi Fujimoto (Univ. Fukui), Koshiro Kitao, Tetsuro Imai (NTT DOCOMO) AP2019-54
The 5th Generation(5G) will introduce MU-MIMO to achieve super high bit rate. Also, Massive MIMO will be effective to co... [more] AP2019-54
pp.39-42
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
SIP 2017-08-24
14:40
Tokyo Tokyo Denki University Computational Complexity Reduction for Third-order Volterra Filter Based on Singular Value Decomposition and the Application to the Compensation of Third-order Nonlinear Distortions
Yuya Nakahira, Kenta Iwai, Yoshinobu Kajikawa (Kansai Univ.) SIP2017-53
Nonlinear distortions of loudspeaker systems affect the sound quality and
should be accordingly compensated by any lin... [more]
SIP2017-53
pp.27-32
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
COMP, IPSJ-AL 2016-06-24
13:45
Ishikawa   On completeness of polynomial-time counting hierarchy under relaxed subtractive reductions
Shunichi Matsubara (Aoyama Gakuin Univ.) COMP2016-7
The polynomial-time hierarchy was introduced by Meyer and Stockmeyer, which is a hierarchy on decision problems and has ... [more] COMP2016-7
pp.9-12
PRMU, IPSJ-CVIM, MVE [detail] 2016-01-22
15:35
Osaka   A Note on the Computational Complexity Reduction Method of the Optimal Prediction under Bayes Criterion in Semi-Supervised Learning
Yuto Nakano, Shota Saito, Toshiyasu Matsushima (Waseda Univ.) PRMU2015-130 MVE2015-52
In this paper, we deal with a prediction problem of the semi-supervised learning based on the statistical decision theor... [more] PRMU2015-130 MVE2015-52
pp.275-280
COMP 2015-10-02
10:00
Tokyo   Upper and lower bounds and time complexities on the Frobenius problem obtained from analysing its additive structure
Shunichi Matsubara (Aoyama Gakuin Univ.) COMP2015-22
In this work, we investigate upper and lower bounds for the Frobenius problem, using some existing results in additive c... [more] COMP2015-22
pp.1-5
NC, IPSJ-BIO, IBISML, IPSJ-MPS
(Joint) [detail]
2015-06-25
09:55
Okinawa Okinawa Institute of Science and Technology Computational Complexity Reduction for Functional Connectivity Estimation in Large Scale Neural Network
JeongHun Baek, Shigeyuki Oba (Kyoto Univ.), Junichiro Yoshimoto, Kenji Doya (OIST), Shin Ishii (Kyoto Univ.) IBISML2015-22
Identification of functional connectivity between neurons is an important issue in computational neu- roscience. Recentl... [more] IBISML2015-22
pp.181-185
SIP, EA, SP 2015-03-03
10:45
Okinawa   [Poster Presentation] Compensation of Nonlinear Distortions for Parametric Array Loudspeakers -- Reduction of Computational Complexity of Volterra Filters and the Compensation Effects --
Yuta Hatano, Satoshi Kinoshita, Chuang Shi, Yoshinobu Kajikawa (Kansai Univ.) EA2014-119 SIP2014-160 SP2014-182
Reproduction sound of the parametric array loudspeaker (PAL) contains many nonlinear distortions. Therefore we proposed ... [more] EA2014-119 SIP2014-160 SP2014-182
pp.261-266
COMP 2014-12-05
13:55
Kumamoto Sojo University Carry-free positional notation for nonnegative integer combinations of given sets of positive integers satisfying some conditions
Shunichi Matsubara (Aoyama Gakuin Univ.) COMP2014-36
In this paper, we investigate conditions to compute nonnegative integer combinations for a given set of positive integer... [more] COMP2014-36
pp.23-27
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