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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 70  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
SIP 2023-08-07
14:45
Osaka Osaka Univ. (Suita) Convention Center
(Primary: On-site, Secondary: Online)
[Invited Talk] On optimization over Stiefel manifold based on adaptive Cayley parametrization
Keita Kume, Isao Yamada (TokyoTech) SIP2023-50
The Stiefel manifold, say St(p,N), is the set of all N-by-p matrices whose column vectors are orthonormal. Optimization ... [more] SIP2023-50
p.20
RCS 2023-06-14
10:30
Hokkaido Hokkaido University, and online
(Primary: On-site, Secondary: Online)
Scalable Network-Assisted Full-Duplex Cell-Free Massive MIMO Systems with Limited Fronthaul Capacity
Koushi Okui (UEC), Kengo Ando (CU), Koji Ishibashi (UEC) RCS2023-33
This paper proposes a scalable network-assisted full-duplex (NAFD) cell-free massive MIMO (CF-mMIMO) system that achieve... [more] RCS2023-33
pp.31-36
IMQ, IE, MVE, CQ
(Joint) [detail]
2023-03-16
13:10
Okinawa Okinawaken Seinenkaikan (Naha-shi)
(Primary: On-site, Secondary: Online)
[Special Talk] Group Sparse/Low-rank Modeling for Multidimensional Signal Recovery
Seisuke Kyochi (Kogakuin Univ.) IMQ2022-52 CQ2022-93 IE2022-129 MVE2022-82
Group sparse/low-rank modeling based on the ℓ1 norm and nuclear norm has been successfully applied
to signal processing... [more]
IMQ2022-52 CQ2022-93 IE2022-129 MVE2022-82
pp.156-161(IMQ), pp.64-69(CQ), pp.156-161(IE), pp.156-161(MVE)
NC, MBE
(Joint)
2023-03-14
09:55
Tokyo The Univ. of Electro-Communications
(Primary: On-site, Secondary: Online)
An extension of the Sinkhorn divergence via convex combination of the bias correction term
Kyohei Miwa, Yu Nishiyama (UEC) NC2022-100
Sinkhorn divergence (SD) is a divergence in which a bias correction term is added to the entropic optimal transport (EOT... [more] NC2022-100
pp.48-53
IE 2023-02-02
15:30
Tokyo NII
(Primary: On-site, Secondary: Online)
[Invited Talk] How Can We Compress Signs of DCT Coefficients in Image Coding? -- A Method Inspired by Phase Retrieval --
Chihiro Tsutake (Nagoya Univ.) IE2022-55
Compressing the signs of DCT coefficients is an intractable problem in image coding because of their equiprobable charac... [more] IE2022-55
p.19
MBE, NC 2022-12-03
10:20
Osaka Osaka Electro-Communication University ICA with SCAD penalty via DC algorithm
Yusuke Endo, Koujin Takeda (Ibaraki Univ.) MBE2022-31 NC2022-53
In this work, we propose an improved method of ICA(Independent Component Analysis), which is used for identifying latent... [more] MBE2022-31 NC2022-53
pp.38-42
IBISML 2022-09-15
15:05
Kanagawa Keio Univ. (Yagami Campus)
(Primary: On-site, Secondary: Online)
Improving Efficiency of Regularization Path Computation in Safe Pattern Pruning via Multiple Referential Solutions
Takumi Yoshida (Nitech), Hiroyuki Hanada (RIKEN), Kazuya Nakagawa, Shinya Suzumura, Onur Boyar, Kazuki Iwata (Nitech), Shun Shimura, Yuji Tanaka (NaogyaU), Masayuki Karasuyama (Nitech), Kouichi Taji (NaogyaU), Koji Tsuda (UTokyo/RIKEN), Ichiro Takeuchi (NaogyaU/RIKEN) IBISML2022-38
Safe Screening and Safe Pattern Pruning are methods for efficiently modeling high-dimensional features by $L_1$-regulari... [more] IBISML2022-38
pp.39-46
EA, SIP, SP, IPSJ-SLP [detail] 2022-03-01
09:20
Okinawa
(Primary: On-site, Secondary: Online)
[Poster Presentation] Robust Hyperspectral Anomaly Detection via Component Decomposition Based on Convex Optimization
Koyo Sato, Shunsuke Ono (Tokyo Tech) EA2021-71 SIP2021-98 SP2021-56
Anomaly detection in hyperspectral (HS) images is a technique to identify pixels whose spectral wavelengths differ from ... [more] EA2021-71 SIP2021-98 SP2021-56
pp.44-49
RISING
(3rd)
2021-11-17
11:00
Tokyo
(Primary: On-site, Secondary: Online)
An Overloaded IoT Signal Detection Method Using Piecewise Continuous Nonconvex Sparse Regularizer
Atsuya Hirayama (Osaka City Univ.), Kazunori Hayashi (Kyoto Univ.)
In this talk, we consider the signal detection problem of overloaded massive multi-user multi-input multi-output (MU-MIM... [more]
RCS 2021-10-21
10:50
Online Online Beamforming Design and Secrecy capacity analysis for Cell-Free massive MIMO
Kengo Ando (UEC), Hiroki Iimori, Giuseppe Abreu (JUB), Koji Ishibashi (UEC) RCS2021-120
In this paper, we investigate a secure beamforming (BF) design for cell-free massive multiple input mul tiple output (CF... [more] RCS2021-120
pp.13-18
RCS 2021-10-21
11:15
Online Online A Study on Resource Allocation and Beamforming Design via Geometric Mean Maximization for Cell-free Massive MIMO Systems with Dynamic TDD
Shuto Fukue (UEC), Hiroki Iimori, Giuseppe Abreu (JUB), Koji Ishibashi (UEC) RCS2021-121
In this paper, we consider a cell-free multiple-input multiple-output (MIMO) systems operated in a dynamic time division... [more] RCS2021-121
pp.19-24
RCS, SAT
(Joint)
2021-08-27
14:55
Online Online Resource Allocation and Beamforming Design Considering User Fairness for Cell-Free Massive MIMO System with Dynamic TDD
Shuto Fukue (UEC), Hiroki Iimori, Giuseppe Abreu (JUB), Koji Ishibashi (UEC) RCS2021-115
In this paper, we consider a cell-free massive multiple-input multiple-output (MIMO) system, in which uplink and downlin... [more] RCS2021-115
pp.85-90
SIP 2021-08-23
14:00
Online Online [Invited Talk] Block-Sparse Estimation using Optimal Block Structure
Hiroki Kuroda (Ritsumeikan Univ.) SIP2021-29
This talk presents a convex optimization based block-sparse estimation method which is effective even when concrete bloc... [more] SIP2021-29
p.11
SIP 2021-08-23
15:40
Online Online [Invited Talk (Young Researcher)] Hyperspectral image restoration based on convex optimization
Saori Takeyama (Tokyo Tech) SIP2021-31
Hyperspectral (HS) images have high-resolution spectral information including invisible light, so they can visible the i... [more] SIP2021-31
p.18
RCC 2021-01-22
13:30
Online Online Maximum Turn-off Control Based on Block-sparse Optimization and Its Feedback Control
Takumi Iwata, Shun-ichi Azuma, Ryo Ariizumi, Toru Asai (Nagoya Univ.) RCC2020-34
In this paper, maximum turn-off control and its feedback control are considered. Maximum turn-off control is, in the cas... [more] RCC2020-34
pp.1-3
SIP, IT, RCS 2021-01-22
13:20
Online Online Acceleration of Fast Multiple Singular Value Thresholding with Fast Inverse Square Root
Takayuki Sasaki, Ryuichi Tanida, Kimata Hideaki (NTT) IT2020-104 SIP2020-82 RCS2020-195
In this paper, we propose a method for speeding up the singular value thresholding of a small many matrices using the fa... [more] IT2020-104 SIP2020-82 RCS2020-195
pp.230-234
NS, RCS
(Joint)
2020-12-18
15:00
Online Online Dynamic TDD Allocation via Fractional Programming for Cell-Free Massive MIMO Systems
Shuto Fukue (UEC), Hiroki Iimori, Giuseppe Abreu (Jacobs Univ. Bremen), Koji Ishibashi (UEC) RCS2020-151
In this paper, we consider a user-centric spacial resource management problem for cell-free massive MIMO architectures w... [more] RCS2020-151
pp.91-96
SIP 2020-08-28
11:20
Online Online [Invited Talk] Blind source separation based on proximal splitting algorithm
Kohei Yatabe (Waseda Univ.) SIP2020-36
This talk presents blind source separation (BSS) from multi-channel audio signals. BSS is methodology of estimating sepa... [more] SIP2020-36
p.31
SR, NS, SeMI, RCC, RCS
(Joint)
2020-07-08
13:50
Online Online Deep Unfolded Multicast Beamforming for Massive MIMO
Satoshi Takabe, Tadashi Wadayama (NITech) RCS2020-64
Multicast beamforming is a promising technique for multicast communications to design a beamforming vector based on chan... [more] RCS2020-64
pp.37-42
SR, NS, SeMI, RCC, RCS
(Joint)
2020-07-09
15:30
Online Online [Invited Lecture] Consideration on Radio Resource Allocation Based on Optimization Algorithm
Nobuhiko Miki, Shoya Tabuchi, Issei Makino (Kagawa Univ.) RCC2020-9 NS2020-38 RCS2020-72 SR2020-17 SeMI2020-9
 [more] RCC2020-9 NS2020-38 RCS2020-72 SR2020-17 SeMI2020-9
pp.43-47(RCC), pp.43-47(NS), pp.85-89(RCS), pp.49-53(SR), pp.37-41(SeMI)
 Results 1 - 20 of 70  /  [Next]  
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