What is MIMO Communication in 4G and WiFi Networks ?

Recently, the wireless communication systems have been transformed and now they have more robust communication link and higher spectral efficiency. One of the main improvement, which has been implemented into current 4G and WiFi networks, is MIMO (Multiple-Input Multiple-Output) technique.

MIMO communication networks include more than one transmitter and receiver antennas in order to use multiple channel at the same time and frequency resources. The idea behind this technique is each antenna port can have a separate channel due to reflection and the scattering of the microwaves during the propagation. These channels are utilized using software based receivers and equalizer in order to simultaneously transmit data.

MIMO enhances the spectral efficiency, thus the capacity of the link besides providing more communication links.