Two-Dimensional Beamforming (2DBF), also known as single-dimension beamforming, is a signal processing technique utilised in Massive MIMO
arrays for directional signal transmission or reception. This method varies the phase and amplitude of the signal at each transmitter, enabling the control of the shape and direction of the beams formed. 2DBF is a critical technology for improving the performance of wireless networks. It enhances the signal quality, increases the cell capacity, and extends the coverage area. The technique can focus the transmitted energy towards a specific direction, which significantly reduces interference to other users and improves the overall network efficiency. Despite its name, 2DBF does not mean that the beamforming is performed in two dimensions. Instead, it refers to the fact that the beam can be steered in any direction within a two-dimensional plane. This is in contrast to 3DBF which permits steering of the beam in both azimuth and elevation planes.