ALEXANDRIA, Va., June 18 -- United States Patent no. 12,328,165, issued on June 10, was assigned to RF DSP Inc (Reno, Nev.).

"Hybrid beamforming method for wireless multi-antenna and frequency-division duplex systems" was invented by Dengkui Zhu (Beijing), Boyu Li (Irvine, Calif.) and Ping Liang (Newport Coast, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "This invention presents a method and systems for beamforming in wireless communication comprising a base station with a plural of antennas and radio frequency transmitting and receiving chains, a plural of base band transmitting paths and base band receiving paths, and a processor that constructs a subspace for each user equipment using the princip...