ents. Configuration D corresponds to an antenna made up of a column of two sets of radiating elements, each set corresponding to a cross-polarization +45 degrees. Configuration E corresponds to an antenna consisting of two columns, each column comprising two sets of radiating elements and each set corresponding to a cross-polarization +45 degrees. Configuration E combines pairs of correlated radiating elements of the same polarization and pairs of decorrelated radiating elements of different polarizations. Configuration F corresponds to an antenna consisting of: - a central column of two sets of radiating elements, each set corresponding to a cross-polarization +45 degrees; - two sets which are distant spatially, each set comprising radiating elements, corresponding to one of the two cross-polarizations +45 degrees. 5G-NR Radio Interface - MIMO and Beamforming The remaining polarization is available for use in another frequency band. Configuration G corresponds to an antenna made up of four columns of radiating elements, each column comprising two sets of radiating elements and each set corresponding to a cross polarization +45 degrees. Configuration H corresponds to two spaced antennas, each antenna consisting of a column of two sets of radiating elements and each set corresponding to a cross polarization +45 degrees. Configuration I is two spaced antennas, each antenna consisting of a column of vertically polarized radiating elements. Figure 6.8. Antenna configuration The antenna structure is formed of a panel (single-panel) or a panel assembly (multi-panel). The single-panel structure is based on the full connection model: the RF chains are connected to all the antenna elements. The multi-panel structure consists of connecting several RF chains to different panels. The RF chains are grouped into a sub-assembly, and each sub-assembly is connected to a single-panel structure. Antenna structure is defined by three parameters (Ng, N1 and N2), with Ng being the number of panels, N1 being the number of columns per p