Non-Uniform Full-Dimension MIMO: New Topologies and Opportunities

Different from traditional massive MIMO arranging ULA only in the azimuth direction, FD-MIMO offers a practical means of realizing massive MIMO in limited space by equipping URA at the base station, which provides extra spatial degree of freedom in elevation domain and eliminates inter-cell interference considerably. Consequently, FD-MIMO draws much attention from both academia and industry for future 5G wireless communication systems. However,...