FEEDBACK METHODOLOGY FOR PER-USER ELEVATION MIMO

摘要

A method includes receiving downlink reference signals from a transmit antenna array having of rows of azimuth antenna elements and columns of elevation antenna elements (9A, 9B); computing first channel state information feedback components assuming azimuth-only adaptation (9C); computing second channel state information feedback components assuming elevation-only adaptation (9D); computing third channel state information feedback components assuming elevation-adaptation and elevation adaptation (9E); and feeding back the first, second and third channel state information feedback components (9F).