ALEXANDRIA, Va., April 21 -- United States Patent no. 12,609,855, issued on April 21, was assigned to NTT DOCOMO Inc. (Tokyo).

"Electronic device" was invented by Juan Liu (Beijing), Wenjia Liu (Beijing), Xiaolin Hou (Beijing) and Lan Chen (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides an electronic device, including an input unit configured to obtain a first sequence including Q elements, the Q being an integer greater than 0; a control unit configured to perform a zero-padding operation and a discrete Fourier transformation spreading operation on the first sequence to determine an extension sequence, and perform a double-side data deletion operation based on the ext...