Evaluation of Time Synchronization Accuracy of Wireless Two-Way Interferometry (Wi-Wi): Consideration of Distance Dependence in NLOS Environment
Toshiki Ouchi, Tatsuya Hatagi, Serena Akasaka, Suguru Kameda, Satoshi Yasuda, Nobuyasu Shiga · 2024
The wireless two-way interferometry (Wi-Wi) is used for precise time synchronization between nodes. In this paper, we measured and evaluated the initial timing offset in a non-line-of-sight (NLOS) environment with distances between Wi-Wi modules, up to 20 m. Since the standard deviation of the offset was less than 30 ns in all measured conditions, it was shown that Wi-Wi is capable of high-precision initial timing synchronization.