Learn in the textbookAdvancement of Mobile Communications and Device Technology
DefinitionMIMO is a wireless technology that uses multiple antennas at both the sending and receiving ends, moving several streams of data at once to speed up communication.
ExplanationIn Japanese it is read "maimo". Compared with sending in sequence over one antenna, it carries more data at a time without widening the radio bandwidth. Smartphones use it for 4G and 5G, and wireless LANs use it too.
AnalogyWith one service counter, parcels can only be handed over in turn; open more counters and several can change hands at once.
Memory hookThe letters stand for Multiple Input Multiple Output: more than one way in and more than one way out.