US Patent No. 10,694,491

SYSTEMS AND METHODS FOR DETECTING MOTION BASED ON CHANNEL CORRELATION IN WIRELESS COMMUNICATION SIGNALS


Patent No. 10,694,491
Issue Date June 23, 2020
Title Systems And Methods For Detecting Motion Based On Channel Correlation In Wireless Communication Signals
Inventorship Xiayu Zheng, San Jose, CA (US)
Xilin Cheng, Menlo Park, CA (US)
Zhipei Chi, Sunnyvale, CA (US)
Assignee Marvell International Ltd., Hamilton (BM)

Claim of US Patent No. 10,694,491

1. A system for detecting motion, the system comprising:a receiver at a first wireless communication device capable of wirelessly communicating with a second wireless communication device, the first wireless communication device configured to:
receive from the second wireless communication device via two or more subcarriers a first packet and a channel correlation for the first packet across the two or more subcarriers; and
control circuitry configured to:
estimate a channel energy difference for the receiver based on the channel correlation for the first packet; and
make a motion detection decision based on the estimated channel energy difference.