ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,525,997, issued on Jan. 13, was assigned to NOKIA TECHNOLOGIES OY (Espoo, Finland).

"Group delay compensation" was invented by Benny Vejlgaard (Gistrup, Denmark), Oana-Elena Barbu (Aalborg, Denmark) and Johannes Harrebek (Aalborg, Denmark).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method, apparatus and computer program is described comprising: providing a filtered transmit signal for transmission using a transmit forward path of a transmitter of a mobile communication system; receiving a receive signal using a wideband transmit feedback path of the transmitter of the mobile communication system; generating an estimate of a transfer function of the...