MIMO (Multiple-Input Multiple-Output), is a key technology in modern mobile networks, particularly in 4G and 5G. It is a critical component that enables the improved performance and capacity of these networks.

MIMO refers to the use of multiple antennas at both the transmitter and receiver sides of a wireless communication system. This enables the transmission of multiple independent data streams over the same frequency channel. Which significantly increase the overall data throughput of the system.

This technology allows for the use of beamforming techniques, where the signals from multiple antennas are combined to create a directional beam, focusing the signal energy towards the receiver, and reducing interference in other directions.