| 2025 | VTC | Doppler Dilution of Precision Analysis for GNSS and Starlink LEO Satellite Positioning. | Md. Ali Hasan, M. Humayun Kabir, Md Shafiqul Islam, Takeshi Hirai, Wonjae Shin |
| 2025 | VTC | Post-Disaster-Aware Proactive Deployment of Aerial Base Stations for Resilient Cellular Networks. | Takeshi Hirai, Wonjae Shin, Naoki Wakamiya |
| 2025 | WCNC | Analyzing Packet Reception Ratio in UAV-to-UAV Communication Systems in a Realistic Urban Area via Stochastic Simulation. | Ashkan Negahban, Takeshi Hirai |
| 2024 | VTC | Simulation-Based Performance Analysis of UAV-to-UAV Communications in a Realistic Urban Landscape Considering 3D Blockage Effects. | Ashkan Negahban, Takeshi Hirai |
| 2024 | VTC | Throughput Maximization in Grant-Free Power-Domain NOMA for 3D Distributed Users by Stochastic Geometry. | Yuta Ueda, Takeshi Hirai, Naoki Wakamiya |
| 2023 | GLOBECOM | Power-Collision-Based 2-Shot Grant-Free NOMA with Cross-Slot SIC for mMTC. | Takeshi Hirai, Taisuke Izumi, Naoki Wakamiya |
| 2023 | MSWIM | Modeling and Performance Analysis of Slotted ALOHA with Interference Cancellation for mMTC. | Yuki Ichimura, Shigeo Shioda, Takeshi Hirai |
| 2023 | VTC | Optimal Deployment of an Aerial Base Station in Heterogeneous Cellular Networks for Heterogeneous User Traffic Demands. | Takeshi Hirai, Kouki Doi, Naoki Wakamiya |
| 2022 | GLOBECOM | Spatial Performance Analysis of Autonomous Sidelink Cellular-V2X with NOMA. | Takeshi Hirai, Tatsuaki Kimura, Naoki Wakamiya |
| 2022 | GLOBECOM | Power Level Design-aware Throughput Analysis of Grant-Free Power-Domain NOMA in mMTC. | Takeshi Hirai, Rei Oda, Naoki Wakamiya |
| 2022 | VTC | NOMA-dependent Low-Powered Retransmission in Sensing-based SPS for Cellular-V2X Mode 4. | Takeshi Hirai, Naoki Wakamiya, Tutomu Murase |
| 2021 | VTC | Link-level Performance Evaluations of Sparse Code Multiple Access for PC5-based Cellular-V2X with Heterogeneous Channel Estimation Errors. | Takeshi Hirai, Predrag Spasojevic |
| 2020 | VTC | Closed-Form Expressions of Performance Metrics of V2X Safety Communication in Urban Scenarios. | Kai Takahashi, Yuto Konuma, Shigeo Shioda, Takeshi Hirai, Tutomu Murase |
| 2019 | VTC | NOMA Concept for PC5-Based Cellular-V2X Mode 4 in Crash Warning System. | Takeshi Hirai, Tutomu Murase |