It should have crossed our mind when there is a step input in speed from 3G (Av 3.6 to 4 Mbps) to 4G (Around 48Mbps).
MIMO is a terminology that is being a method for multiplying the capacity of a radio link using multiple transmit and receive antennas .
In MIMO your modem uses two separate antennas at once to deliver super fast speeds.
What makes this possible s cross polarized waves giving birth to 2 simultaneous streams of data.
MIMO uses multiplexing to increase wireless bandwidth and range. The algorithms send information out over multiple antennas and the information is received via multiple antennas as well. Whereas in normal radio, multiplexing would cause interference MIMO uses the additional pathways to transmit more information and then recombines the signal on the receiving end.
MIMO systems provide a significant capacity gain over conventional single antenna systems, along with more reliable communication. Thus MIMO sounds to be the most promising among upcoming the wireless technologies.