Wireless two-Way interferometry

We aim to build a new platform which precisely synchronizes clocks to pico second accuracy, using commonly used wireless communication technologies.

In recent years, the "Internet of things (IoT)" is getting popular and it has been predicted that more than 1 trillion sensors will be connected using wireless technologies.

Figure concept of the IoT *1

Today's communication technology is based on the assumption that clocks in communication devices are not synchronized. We believe that synchronization technology will open doors for new application fields. Keeping that goal in mind, we are developing a technique called "Wireless two-Way interferometry (Wi-Wi)" which synchronizes the clocks using existing wireless communication technologies, utilizing commonly available communication modules. Wi-Wi is based on the well-developed technique called "Two-Way Satellite Time and Frequency Transfer (TWSTFT) *2 ", which uses satellites. We simplified that technique by using well established wireless communication technologies, without using the satellite.

We plan to extend this technique to a platform and contribute towards building a precise synchronization and positioning system.

*1; By Wilgengebroed on Flickr [CC BY 2.0 (http://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons