ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,562,948, issued on Feb. 24, was assigned to NEC Corp. (Tokyo).
"Radio transmission device and radio reception device" was invented by Norifumi Kamiya (Tokyo) and Mamoru Sawahashi (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "In a radio transmission device, an orthogonal frequency division multiplexing (OFDM) signal forming unit forms an OFDM signal by arranging pilot signals according to a pilot arrangement pattern. According to the pilot arrangement pattern, among a plurality of pilot arrangement subcarriers with an NPilot_Freq-subcarrier interval, in a plurality of first pilot arrangement subcarriers with an NPilot_SPA-subcarrier interval, pil...