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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 33  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
NS, IN
(Joint)
2024-02-29
10:10
Okinawa Okinawa Convention Center Stochastic Geometry-based Transmission Power Analysis and Optimization for UAV Altitude in U2U in Inhomogeneous UAV Density
Soma Shimizu, Takeshi Hirai, Naoki Wakamiya (Osaka Univ) IN2023-73
This paper analyzes the impacts of inhomogeneous density distribution of unmanned aerial vehicles (UAVs) in UAV-to-UAV c... [more] IN2023-73
pp.47-52
SeMI 2024-01-18
14:40
Yamanashi Raki House Kaiji Spatial Performance Analysis of Autonomous Sidelink Cellular V2X with NOMA
Tomoki Fuchikami, Takeshi Hirai, Oda Rei, Naoki Wakamiya (Osaka Univ.) SeMI2023-55
This paper spatially analyzes the packet reception ratio (PRR) in vehicle-to-everything (V2X) with the non-orthogonal mu... [more] SeMI2023-55
pp.34-38
SeMI 2024-01-19
10:45
Yamanashi Raki House Kaiji Optimizing Power Level Selection Probability in GF-NOMA for Users Distributed in 3D Space
Yuta Ueda, Takeshi Hirai, Rei Oda, Naoki Wakamiya (Osaka Univ.) SeMI2023-66
This paper maximizes the throughput of the grant-free non-orthogonal multiple access (GF-NOMA) for users distributed in ... [more] SeMI2023-66
pp.88-93
SeMI 2024-01-19
11:25
Yamanashi Raki House Kaiji Trajectory Optimization of Multiple Aerial Base Stations for Traffic Changes
Maki Kozaki, Takeshi Hirai, Rei Oda, Naoki Wakamiya (Osaka Univ.) SeMI2023-68
This paper optimizes, we have identified trajectories of multiple aerial base stations (ABSs) to maximize the throughput... [more] SeMI2023-68
pp.100-105
SeMI 2024-01-19
11:45
Yamanashi Raki House Kaiji Stochastic Geometry-based Transmission Power Optimization for UAV Altitude in U2U Communications
Soma Shimizu, Takeshi Hirai, Naoki Wakamiya (Osaka Univ.) SeMI2023-69
This paper proposes a stochastic geometry-based analytical model and optimizes the transmission power per unmanned aeria... [more] SeMI2023-69
pp.106-111
CCS, IN
(Joint)
2023-08-04
10:12
Hokkaido Banya-no-yu Optimal Power Levels in Grant-Free Power-Domain NOMA for mMTC
Takeshi Hirai, Rei Oda, Naoki Wakamiya (Osaka Univ.) IN2023-27
This paper optimizes the number of power levels in grant-free power-domain NOMA (GF-NOMA) for massive machine-type commu... [more] IN2023-27
pp.58-63
SeMI, RCS, RCC, NS, SR
(Joint)
2023-07-12
10:50
Osaka Osaka University Nakanoshima Center + Online
(Primary: On-site, Secondary: Online)
Throughput Maximization of Semi-Grant-Free PD-NOMA for mMTC
Takeshi Hirai, Lu Chen, Naoki Wakamiya (Osaka Univ.) SeMI2023-23
This paper maximizes the throughput of the semi-grant-free power-domain non-orthogonal multiple access (SGF-NOMA) for th... [more] SeMI2023-23
pp.13-18
CCS 2023-03-26
15:10
Hokkaido RUSUTSU RESORT Performance Evaluations of Self-organized Power Selection in GF-NOMA for mMTC Unider Limited Transmission Power
Rei Oda, Takeshi Hirai, Naoki Wakamiya (Osaka Univ.) CCS2022-76
This paper evaluates the throughput of the self-organized power selection method in the grant-free power domain non-orth... [more] CCS2022-76
pp.75-80
CCS 2023-03-26
15:30
Hokkaido RUSUTSU RESORT Throughput Analysis by Stochastic Geometry of the Slotted Spatial ALOHA
Tomoki Ichimura, Shigeo Shioda (Chiba Univ.), Takeshi Hirai (Osaka Univ.) CCS2022-77
 [more] CCS2022-77
pp.81-84
IN, NS
(Joint)
2023-03-02
12:30
Okinawa Okinawa Convention Centre + Online
(Primary: On-site, Secondary: Online)
Cooperative Mobility Control for Maintaining Required Throughput in Multiple Ad Hoc Networks with Autonomous Mobile Robots
Kota Makino (Nagoya Univ.), Takeshi Hirai (Osaka Univ.), Tutomu Murase (Nagoya Univ.) IN2022-76
We proposes a travel route control method that achieves a specified throughput value for a long time where multiple auto... [more] IN2022-76
pp.63-68
SeMI, IPSJ-UBI, IPSJ-MBL 2023-02-28
10:40
Aichi
(Primary: On-site, Secondary: Online)
Indoor Localization for Pedestrians Using BLE Signals Emitted by Smartphones
Aoi Suzuki, Takuhiro Uehara, Shino Shiraki, Shigeo Shioda (Chiba Univ.), Takeshi Hirai (Osaka Univ.) SeMI2022-108
The proximity-based location estimation method estimates the locations of terminals by classifying the
distance between... [more]
SeMI2022-108
pp.7-12
SeMI, SeMI
(Joint)
2023-01-19
13:10
Tokushima Naruto grand hotel
(Primary: On-site, Secondary: Online)
[Short Paper] Throughput Analysis in GF-NOMA with Inter-Cell Interference for mMTC
Rei Oda, Takeshi Hirai (Osaka Univ.), Shigeo Shioda (Chiba Univ.), Naoki Wakamiya (Osaka Univ.) SeMI2022-71
This paper presents throughput in grant-free non-orthogonal multiple access (GF-NOMA) for massive machine-type communica... [more] SeMI2022-71
pp.3-8
IN, CCS
(Joint)
2022-08-05
15:20
Hokkaido Hokkaido University(Centennial Hall)
(Primary: On-site, Secondary: Online)
Mobility Control Considering Internode Interference for Ad Hoc Networks with Autonomous Mobile Robots
Kota Makino (Nagoya Univ.), Takeshi Hirai (Osaka Univ.), Tutomu Murase (Nagoya Univ.) IN2022-23
We proposes a travel route control and relay control method that improves QoS (throughput) in a system where multiple au... [more] IN2022-23
pp.45-50
IN, CCS
(Joint)
2022-08-05
15:40
Hokkaido Hokkaido University(Centennial Hall)
(Primary: On-site, Secondary: Online)
Stochastic Geometry-based Performance Analysis of UAV-to-UAV Communications under Channel Congestion
Takeshi Hirai, Tatsuaki Kimura, Naoki Wakamiya (Osaka Univ.) IN2022-24
The systems using unmanned aerial vehicles (UAVs) have advanced smart city.
Such systems requires UAV-to-UAV communica... [more]
IN2022-24
pp.51-56
IN, RCS, NV
(Joint)
2022-05-27
10:55
Kanagawa Keio University (Hiyoshi Campus)
(Primary: On-site, Secondary: Online)
[Invited Lecture] Non-Orthogonal Multiple Access for Infrastructure-less Cellular-V2X
Takeshi Hirai (Osaka Univ.) IN2022-8 RCS2022-21
This paper introduces non-orthogonal multiple access (NOMA) techniques for the infrastructure-less cellular-vehicle-to-e... [more] IN2022-8 RCS2022-21
pp.38-42(IN), pp.40-44(RCS)
CAS, CS 2022-03-04
16:25
Online Online Robustness of Distributed Power Control for GF-NOMA in mMTC
Rei Oda, Takeshi Hirai, Naoki Wakamiya (Osaka Univ.) CAS2021-100 CS2021-102
This paper investigates the robustness of our distributed power control method for the grant-free non-orthogonal multipl... [more] CAS2021-100 CS2021-102
pp.141-146
RCS, NS
(Joint)
2021-12-16
09:30
Nara Nara-ken Bunka Kaikan and Online
(Primary: On-site, Secondary: Online)
Maximum Delay Analysis of Fixed Backoff in IEEE 802.11 Considering Significant Interference for In-Vehicle Wireless Communication
Takumi Shiohara (Nagoya Univ.), Atsuhiro Iwaki (Mie Univ.), Takeshi Hirai (Osaka Univ.), Kosuke Sanada (Mie Univ.), Tutomu Murase (Nagoya Univ.) NS2021-96
In this research, we propose a delay distribution analysis method for the IEEE 802.11(CSMA/CA) fixed contention window (... [more] NS2021-96
pp.1-6
RCS, NS
(Joint)
2021-12-17
09:30
Nara Nara-ken Bunka Kaikan and Online
(Primary: On-site, Secondary: Online)
Distributed Power Control based on Channel Gain for Grant-Free Non-Orthogonal Multiple Access in Massive Machine-Type Communications
Rei Oda, Takeshi Hirai, Naoki Wakamiya (Osaka Univ.) NS2021-102
This paper investigates a distributed power control method based on channel gains for the grant-free non-orthogonal mult... [more] NS2021-102
pp.29-34
IN, NS
(Joint)
2021-03-05
10:40
Online Online Performance Evaluations of NOMA with Imperfect CSI in Infrastructure-less Cellular V2X in Crash Warning System
Takeshi Hirai, Tutomu Murase (Nagoya Univ.) IN2020-78
This paper presents performance evaluations of the non-orthogonal multiple access (NOMA) with imperfect channel state in... [more] IN2020-78
pp.144-149
NS 2019-10-10
11:35
Aichi Nagoya Institute of Technology [Invited Lecture] Performance Evaluation on MAC Layer Protocol in Crash Warning Application using PC5-based Cellular-V2X mode4
Takeshi Hirai, Tutomu Murase (Nagoya Univ.) NS2019-101
This paper presents the characteristics of the MAC layer protocol of PC5-based Cellular-V2X mode 4 for Crash Warning App... [more] NS2019-101
pp.13-18
 Results 1 - 20 of 33  /  [Next]  
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