What is MIMO technology? Include beamforming and spatial multiplexing in your answer.

Question

What will be an ideal response?

Answer 1

Multiple-input and multiple-output (MIMO) technology is based on using multiple radios, both transmitters and receivers, as well as multiple antennas. Instead of antenna diversity, 802.11n MIMO-capable devices use multiple radios, each with its own antenna, and they employ beamforming to virtually direct a transmission back to the device from which they just received a frame, thus increasing the transmitted signal's range. Multiple radios can also increase the throughput. Instead of transmitting a frame via a single radio, 802.11n MIMO-capable devices breakup a frame into multiple parts and transmit each one via a different radio. This is called spatial multiplexing.