On March 6-7, 2025, fourth-year undergraduate students Nakata and Takao gave oral presentations at japanese domestic workshop "The IEICE Technical Conference on Communication Systems Workshop (CS)" held in Miyako Island, Okinawa Prefecture.
Also, Nakata received Chair's Award.
The presentation titles were as follows:
Bluetooth Channel Soundingを用いた人の存在検知手法の提案
- Yuya Nakata, Viktor Erdélyi (Osaka Univ.), Chaoran Li, Takeshi Kato, Akira Uchiyama (Osaka Univ.)
- Abstract: This research addresses the challenge of detecting children left in vehicles without requiring additional sensors or wiring, which can be costly and space-consuming. The proposed method utilizes Bluetooth Channel Sounding technology from devices already installed in many vehicles to detect human presence. By analyzing phase information changes when objects affecting radio waves are present near Bluetooth devices, the system employs machine learning techniques to distinguish human bodies from other objects in a vehicle environment.
Wi-Fi CSIによる屋内ドローンのプロペラ回転数推定手法の提案
- Yuta Takao, Viktor Erdélyi (Osaka Univ.), Ho Anh Van (JAIST), Kazuya Ohara (NTT AS), Yasue Kishino (NTT CS), Akira Uchiyama (Osaka Univ.)
- Abstract: This study tackles the problem of measuring propeller rotation speed in indoor drones without adding new sensors that increase cost and weight—a particular concern for small indoor drones. The proposed method leverages Wi-Fi Channel State Information (CSI) from communication equipment already installed on drones. By capturing periodic radio wave variations caused by propeller rotation between transmitters and receivers, the approach enables rotation speed estimation without additional hardware, making it practical for various indoor drone applications including product picking, delivery, and show events.
Note: The titles of the presentations are kept in Japanese as per the original format.
