ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,739,157, issued on Sept. 15, was assigned to Telefonaktiebolaget LM Ericsson (publ) (Stockholm).

"Approaches for APSK modulation" was invented by Sverker Sander (Billdal, Sweden), Per Ingelhag (Alingsas, Sweden), Ulf Gustavsson (Gothenburg, Sweden) and David Gustafsson (Savedalen, Sweden).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of providing a modulated signal for transmission is disclosed. The method includes selecting a modulation symbol, and operating a signal generator to provide the selected modulation symbol for transmission.Each available modulation symbol has a symbol duration, includes a pulse, and indicates information by a comb...