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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 24  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
SAT, RCS
(Joint)
2022-08-26
10:15
Hokkaido
(Primary: On-site, Secondary: Online)
Design of Coordinated Multi-Point Beamforming for Millimeter-Wave OFDM With Random Blockage
Sota Uchimura, Hiroki Iimori (UEC), Giuseppe Abreu (JUB), Koji Ishibashi (UEC)
 [more]
RCS 2022-06-17
09:20
Okinawa University of the Ryukyus, Senbaru Campus and online
(Primary: On-site, Secondary: Online)
A Study on Indoor Location Estimation Based on Complex-Domain Super MDS Method Using Time Series Information
Yuya Nishi, Takumi Takahashi (Osaka univ.), Hiroki Iimori, Giuseppe Abreu (JUB), Shinsuke Ibi (Doshisha Univ.), Seiichi Sampei (Osaka univ.) RCS2022-55
As sensor terminals become smaller, more energy-efficient, and more multi-functional, wireless communication networks ar... [more] RCS2022-55
pp.182-187
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 2021-10-21
16:00
Online Online [Poster Presentation] A Study on Bayesian Receiver Design via Bilinear Inference for Scalable Cell-Free Massive MIMO
Takumi Takahashi (Osaka Univ.), Hiroki Iimori (JUB), Kengo Ando, Koji Ishibashi (UEC), Shinsuke Ibi (Doshisha Univ), Giuseppe Abreu (JUB) RCS2021-129
One of the main challenges in realizing uplink scalable cell-free massive multi-input multi-output (CF-mMIMO) is capacit... [more] RCS2021-129
pp.57-62
RCS, SAT
(Joint)
2021-08-27
14:30
Online Online Antenna Configuration and Robust Receiver Design for Scalable Cell-Free Massive MIMO with Capacity Limited Fronthaul
Kengo Ando (UEC), Hiroki Iimori, Giuseppe Abreu (JUB), Takumi Takahashi (Osaka Univ), Koji Ishibashi (UEC) RCS2021-114
In this paper, we investigate an uplink signal detection problem in scalable cell-free massive multiple input multiple o... [more] RCS2021-114
pp.79-84
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
RCS, SAT
(Joint)
2021-08-27
15:20
Online Online Low-Complexity Robust Beamforming Design for Millimeter-Wave Communications with Random Blockage
Sota Uchimura (UEC), Hiroki Iimori, Giuseppe Abreu (JUB), Koji Ishibashi (UEC) RCS2021-116
In this paper, we propose a low-complexity beamforming algorithm for coordinated multi-point (CoMP) millimeter-wave wire... [more] RCS2021-116
pp.91-96
RCS 2021-06-25
13:35
Online Online Tensor-aided Beamforming Design for Full Duplex Cell-Free MIMO
Kengo Ando (UEC), Hiroki Iimori (JUB), Koji Ishibashi (UEC), Giuseppe Abreu (JUB) RCS2021-72
In this paper, we investigate a transmit (TX) and receive (RX) beamforming (BF) design for full-duplex cell-free multipl... [more] RCS2021-72
pp.249-254
RCS, SR, SRW
(Joint)
2021-03-05
11:20
Online Online Tensor-aided Beamforming Design for Cell-Free MIMO
Kengo Ando (UEC), Hiroki Iimori, Giuseppe Abreu (JUB), Koji Ishibashi (UEC) RCS2020-257
In this paper, we investigate a transmit (TX) and receive (RX) beamforming (BF) design for cell free multiple input mult... [more] RCS2020-257
pp.252-257
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
RCS 2020-04-23
- 2020-04-24
Online Online Discreteness Aware Receiver Design and Antenna Configuration for Distributed MIMO
Kengo Ando (The Univ. Electro-Communications), Hiroki Iimori (JUB), Koji Ishibashi (The Univ. Electro-Communications), Giuseppe Abreu (JUB) RCS2020-7
In this paper, we investigate a receiver design for uplink distributed-MIMO networks composed of a common central base s... [more] RCS2020-7
pp.37-42
RCS 2020-04-23
- 2020-04-24
Online Online Optimal Transmission Strategy Realizing Minimum Age-of-Information of Energy Harvesting Users over Multiple-Access Channels
Naoya Hirosawa (The Univ. Electro-Communications), Hiroki Iimori (JUB), Koji Ishibashi (The Univ. Electro-Communications), Giuseppe Abreu (JUB) RCS2020-8
In this paper, we study a sensor network composed of multiple energy harvesting nodes being capable of collecting energy... [more] RCS2020-8
pp.43-48
SeMI, RCS, NS, SR, RCC
(Joint)
2019-07-10
15:45
Osaka I-Site Nanba(Osaka) Robust Transmit Beamforming Design via Fractional Programming for Downlink Power-Domain NOMA Systems
Hiroki Iimori, Koji Ishibashi (UEC), Giuseppe Abreu (JUB) RCC2019-16 NS2019-49 RCS2019-106 SR2019-25 SeMI2019-25
Taking into account imperfect channel state information, we study a robust transmit beamforming design for downlink powe... [more] RCC2019-16 NS2019-49 RCS2019-106 SR2019-25 SeMI2019-25
pp.27-32(RCC), pp.37-42(NS), pp.31-36(RCS), pp.37-42(SR), pp.41-46(SeMI)
RCS 2018-04-23
13:10
Yamaguchi Hotel New Tanaka, Yuda Onsen Joint Design of Multi-tap Analog Canceller and Digital Beamforming for Two-Way Full Duplex MIMO Systems
Hiroki Iimori, Giuseppe Abreu (Ritsumeikan Univ.) RCS2018-7
We consider a two-way full-duplex (FD) multiple-input multiple-output (MIMO) communication system in which nodes are equ... [more] RCS2018-7
pp.37-42
RCS, SR, SRW
(Joint)
2018-03-02
16:05
Kanagawa YRP Non-orthogonal Multiple Access design via Frame Theory
Shunya Nishikawa, Hiroki iimori, Giuseppe Abreu (Rits Univ.) RCS2017-402
We propose a non-orthogonal multiple access (NOMA) scheme based on frame theory. In the proposed design, the interferenc... [more] RCS2017-402
pp.465-468
RCS 2017-04-25
09:50
Kagawa Kotohira Onsen Kotosankaku On Generalized Analysis for Packet Loss Rate of Frameless ALOHA with Multiple Base Station Cooperation
Shun Ogata, Koji Ishibashi (The Univ. Electro-Commun.), Giuseppe Abreu (Jacobs Univ. Bremen) RCS2017-17
We study frameless ALOHA with multiple base station (BS) cooperation and discuss the performance improvement via the coo... [more] RCS2017-17
pp.83-88
SR 2016-01-22
12:55
Nagasaki Fukue-bunka-kaikan Outage Probability Analysis of Energy Harvesting Relay Selection Using Channel Distribution Information in Large-Scale Networks
Hiroki Kawabata, Koji Ishibashi (Univ. of Electro-Comm.), Satyanarayana Vuppala (Univ. of Edinburgh), Giuseppe Abreu (Jacobs Univ. Bremen) SR2015-84
Energy harvesting (EH) cooperative communication has been proposed, which enables the relay to forward the received sign... [more] SR2015-84
pp.81-86
RCC, ASN, RCS, NS, SR
(Joint)
2015-07-29
13:10
Nagano JA Naganoken Bldg. Optimization of Target Degrees for Frameless ALOHA with Multiple Base Stations
Shun Ogata, Koji Ishibashi (The Univ. Electro-Comm.), Giuseppe Abreu (Jacobs Univ. Bremen) RCS2015-100
In this paper, we focus on a frameless ALOHA with two base stations (BSs). Frameless ALOHA with multiple BSs can be repr... [more] RCS2015-100
pp.1-6
SR 2015-05-29
14:15
Hyogo Akashi-Sangyou-Koryu-Center Analysis of Energy Harvesting Relay Selection Using Channel Distribution Information
Hiroki Kawabata (Univ. of Electro-Comm.), Satyanaranaya Vuppala, Giuseppe Abreu (Jacobs Univ. Bremen), Koji Ishibashi (Univ. of Electro-Comm.) SR2015-14
Energy harvesting cooperative communication has been proposed, which enables to relay the received signals while recharg... [more] SR2015-14
pp.87-92
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