The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 04, 2023
Filed:
May. 20, 2021
The United States of America, As Represented BY the Secretary of the Navy, Arlington, VA (US);
Scott Frederick Lord, Chula Vista, CA (US);
John David-Dickson Roth, Del Rey Oaks, CA (US);
Murali Tummala, Monterey, CA (US);
John Colin McEachen, Carmel, CA (US);
Abstract
Physical-layer authentication based on the channel response over a wireless medium are described. In a first authentication scheme, a count is kept of how many significant multipath taps remain empty or occupied from one channel estimate to the next for authentication purposes. In a second authentication scheme, which does not require an alternative means of initial authentication, the presence of a multipath component based on a reported position of a transmitter and the side knowledge of planar reflectors in the environment may be leveraged for authentication purposes.