System and method for proximity detection with single-antenna device
[pierson:snap-patent]Timothy J. Pierson, Ronald Peterson, and David F. Kotz. System and method for proximity detection with single-antenna device. U.S. Patent Application PCT/US2019/029395, Worldwide Patent Application WO2019210201A1, April 26, 2019. ©Copyright the authors. Claims priority to U.S. Provisional Patent Application No. 62/663,543. Priority date 2018-04-27; Filing date 2019-04-26.
A single-antenna device includes a single antenna, at least one processor, and at least one memory. The single-antenna device is operable to receive a signal including at least one frame. Each of said frame includes a repeating portion. The single-antenna device determines a difference of phase and amplitude of the repeating portion and further determines whether the signal is transmitted from a trusted source based at least in part on the difference of phase and amplitude of the repeating portion.
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Keywords: [authentication] [iot] [mhealth] [patent] [security] [wifi]
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