Wi-Wi Is Wireless Time Sync at 1 nanosecond
Read OriginalThis article covers Wi-Wi STAMP, a wireless time synchronization protocol developed by Japan's NICT, which uses 900 MHz band for picosecond-level phase sync and millimeter-level distance accuracy. Current prototypes achieve 30ns time sync with 20ps jitter, with next-gen targeting 5ns. Applications include wireless black burst for video cameras and mm-level positioning. The system outperforms GNSS indoors and avoids costly wiring. The author, a time enthusiast, also discusses the broadcast industry's shift to SMPTE 2110 and PTP-aware switches.
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