Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
RCS |
2024-10-17 16:25 |
Tokyo |
(Tokyo, Online) (Primary: On-site, Secondary: Online) |
A Study on Suppression of Information Leakage to Potential Eavesdroppers in Network-Assisted Full-Duplex Cell-Free Massive MIMO Systems Koushi Okui (UEC), Kengo Ando, Giuseppe Abreu (CU), Koji Ishibashi (UEC) RCS2024-142 |
This paper investigates the design of clustering and beamforming to suppress unintended information leakage to other us... [more] |
RCS2024-142 pp.39-44 |
SIP |
2024-08-26 12:50 |
Fukui |
University of Fukui (Bunkyo Campus) (Fukui, Online) (Primary: On-site, Secondary: Online) |
Image Restoration Using Accelerated Subgradient Method with Learned Convex Regularizers Kosuke Sugimura (Osaka Univ.), Ryo Hayakawa (TUAT), Yoji Iiguni (Osaka Univ.) SIP2024-44 |
Image restoration is the estimation of an unknown image from its degraded measurement.
One approach for the image rest... [more] |
SIP2024-44 pp.1-6 |
QIT (2nd) |
2024-05-28 13:00 |
Ibaraki |
AIST Tsukuba (Ibaraki) |
[Poster Presentation]
On the Convex Optimization Method for POVM Estimation of a Photon-Number-Resolving Detector
-- Estimation Accuracy and Shot Noise -- Akio Yoshizawa (AIST), Daiji Fukuda (AIST/OPERANDO-OIL) |
A measurement in quantum mechanics is characterized using a set of positive semi-definite operators called the POVM (pos... [more] |
|
SIP |
2023-08-07 14:45 |
Osaka |
Osaka Univ. (Suita) Convention Center (Osaka, Online) (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 (Hokkaido, 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) (Okinawa, Online) (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 (Tokyo, Online) (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 (Tokyo, Online) (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 (Osaka) |
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) (Kanagawa, Online) (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 |
(Okinawa, Online) (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 |
(Tokyo, Online) (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 (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 (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 (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 (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 (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 (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 (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 (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 |