Null steering beamforming

1. What is null steering beamforming?
2. What is beam nulling?
3. What is beamforming and beam steering?
4. Is beamforming the same as beam steering?

What is null steering beamforming?

In null steering algorithms, the weights of an antenna array are selected such that the directional pattern has nulls in particular directions. In this manner, undesirable interference, jamming signals, or noise can be reduced or completely eliminated.

What is beam nulling?

Antenna pattern nulling is a method used to suppress interference in the beam pattern by means of placing nulls in the directions of the interfering sources.

What is beamforming and beam steering?

Beamforming simply means using an array of antennas and a combiner to form a spatial filter. Note that beamforming can be in a constant direction (i.e., the combiner can be static). Beamsteering means changing the direction of the antenna array's main lobe.

Is beamforming the same as beam steering?

You can implement beamsteering with simple analog phase shifters. Beamforming is different because it requires precise, real-time channel state information (CSI) from the UE to customize the beam. It needs full digital control of the amplitude and phase at every antenna element.