Abstract: Extremely large-scale multiple-input multipleoutput (XL-MIMO) systems emerge as a critical enabler for $\mathbf{6 G}$ networks demanding enhanced spectral efficiency. The adopted extremely ...

Abstract: Superdirective beamforming (SDB) has received a lot of interest recently since by this technique a small circular array, i.e., small ka, where a is the radius and k is the wave number, can ...