ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,456,022, issued on Oct. 28, was assigned to QUALCOMM Inc. (San Diego).

"Interference cancellation for backscattered reference signals" was invented by Xiaojie Wang (Hillsborough, N.J.), Jing Sun (San Diego), Mohammad Tarek Fahim (San Diego) and Srinivas Yerramalli (San Diego).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are Techniques for wireless communication are provided. In an aspect, a radio frequency identification (RFID) device receives, from an RFID tag, a first backscattered signal, receives, from the RFID tag, a second backscattered signal having a known time offset relative to the first backscattered signal, and performs interferen...