MIMO(Multiple
Input Multiple Output) is technology which can provide significant advantage in
system capabilities (Mostly in Throughput, Reliability and Capacity). Any MIMO
implementation will take use of mostly below benefits.
Diversity Gain:
Arises out of the provision of multiple antennas at the transmitting and/or receiving
end of the radio link. This will create multiple transmission paths which
minimizes fading effects. The result in an overall improvement in SINR and
leading to increased Overall Channel Throughput.
Array Gain: Refers
to the beamforming capability of a multiple antenna array. With Suitable
signaling of feedback from the receiver , or with measurements made on a return
link, it is possible to direct radiated energy towards the receiver in a
steered beam. The results is improved channel performance and increased
throughput.
Spatial
Multiplexing Gain: Rises out of the orthogonality Between the multiple transmission path
created by the multiple antenna array. Since the receiver can resolve
independent transmission paths it is possible to map different information
streams into the transmission paths: differentiated by their spatial signature.
This result in direct increase in the channel throughput in proportion to the
number of separated transmission used.
