Inventor
Ma Xiaofu
US3 patents
Patents
3 patentsUS12279190B1Apr 15, 2025
Respiration monitoring based on noisy channel state information (CSI) data
AMAZON TECH INC2 citations72
US11510028B1Nov 22, 2022
Proximity detection using device-to-device communication links
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US11070945B1Jul 20, 2021
Proximity detection using device-to-device communication links
AMAZON TECH INC4 citations70