US Patent Issued to VIAVI Solutions on July 21 for "Calibration of a phase shift matrix for cable-connected testing of a massive multiple-input multiple-output base station" (British Inventor)

ALEXANDRIA, Va., July 21 -- United States Patent no. 12,689,451, issued on July 21, was assigned to VIAVI Solutions Inc. (Chandler, Ariz.).

"Calibration of a phase shift matrix for cable-connected testing of a massive multiple-input multiple-output base station" was invented by Adrian Jones (Letchworth, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "A testing device may receive, from a phase shift matrix (PSM), a signal pattern associated with a plurality of antenna ports of a base station. The testing device may obtain data associated with the signal pattern and may identify, based on the data, a plurality of null directions associated with the signal pattern. The testing device may, for each ...