ALEXANDRIA, Va., Feb. 5 -- United States Patent no. 12,218,720, issued on Feb. 4, was assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) (Stockholm).
"Multi-user pre-coding" was invented by Ulf Gustavsson (Gothenburg, Sweden), Alex Alvarado (Den Bosch, Netherlands), Frans M. J. Willems (Geldrop, Netherlands) and Amirashkan Farsaei (Eindhoven, Netherlands).
According to the abstract* released by the U.S. Patent & Trademark Office: "A pre-coding method is disclosed of a multi-user, multi-antenna transmitter configured for transmission of respective signals to a plurality of users. The method comprises determining (for each pair of users of the plurality) a spatial correlation value for the pair of users, sorting the plurality of users into ...