MIMO achieves space measurements to improve wireless systems’ capacity, range and reliability. It offers increase in the data throughput and link range without any additional bandwidth or transmitting power. MIMO antenna technology achieves this objective by spreading the same total transmit power over the antennas to accomplish an array gain that recovers the spectral efficiency (more bits per second per Hertz of bandwidth) or to achieve a diversity gain that increases the link reliability (reduced fading).
MIMO technology makes advantage of a natural radio wave phenomenon called multipath. MIMO uses multiple antennas to transfer multiple parallel data signals from a transmitter. In any urban areas, this multi path will bounce off trees, ceilings and other commercial buildings. The signals can reach their destination on their own at the receiver end in different directions.
