ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,739,042, issued on Sept. 15, was assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) (Stockholm).

"Calibration of transmit antenna chains and receive antenna chains of an antenna system" was invented by Vijay Venkateswaran (Vasteras, Sweden), Bo Goransson (Sollentuna, Sweden) and Joao Vieira (Hjarup, Sweden).

According to the abstract* released by the U.S. Patent & Trademark Office: "There is provided mechanisms for calibrating transmit antenna chains and receive antenna chains of an antenna system. A method is performed by a network node. The method comprises obtaining a set of observations from bi-directional sounding of pairs of antennas of the antenna system. Each of the antennas...