18957144. Secure Channel Estimation Architecture (Apple Inc.)
Secure Channel Estimation Architecture
Organization Name
Inventor(s)
Shang-Te Yang of San Jose CA US
Alejandro J. Marquez of Sunnyvale CA US
Mohit Narang of Cupertino CA US
Indranil S. Sen of Cupertino CA US
Secure Channel Estimation Architecture
This abstract first appeared for US patent application 18957144 titled 'Secure Channel Estimation Architecture
Original Abstract Submitted
Wireless communication between two electronic devices may be used to determine a distance between the two devices, even in the presence of an otherwise-disruptive attacker. A wireless receiver system of one device may receive a true wireless ranging signal from a first transmitting device and a false wireless ranging signal from an attacker. The wireless receiver system may correlate the wireless signals with a known preamble sequence and perform channel estimation using the result, obtaining a channel impulse response for the wireless signals. The wireless receiver system may filter the channel impulse response for the plurality of wireless signals by removing at least part of the channel impulse response due to the false wireless ranging signal while not removing at least part of the channel impulse response due to the true wireless ranging signal. The receiver system may perform a wireless ranging operation using the filtered channel impulse response.
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