Glossary  >  Multiple-Input Multiple-Output (MIMO)

Multiple-Input Multiple-Output (MIMO)


Multiple-Input Multiple-Output (MIMO) refers to a wireless technology that utilizes multiple transceivers and receivers, capitalizing on the radio phenomenon known as multipath propagation to transmit more data simultaneously.

Multipath propagation occurs when radio signals reflect off surfaces like walls and buildings, arriving at the receiver from different angles. This phenomenon, once considered a source of interference, is harnessed in MIMO technology to enhance communication efficiency.

Illustration of MIMO technology showing simultaneous transmission paths

Technologies such as modern Wi-Fi, WiMAX, and LTE employ MIMO to increase capacity, spectral efficiency, and link reliability. MIMO can be categorized mainly into:

  • Spatial diversity: Uses multiple transceivers to improve signal-to-noise ratio, enhancing system reliability against fading.
  • Spatial multiplexing: Uses separate spatial paths to increase data throughput, exploiting multipath for greater capacity.

Devices that support the 802.11n standard or newer can utilize MIMO. However, for full functionality, both the device and the access point must support MIMO, and the router should be equipped with multiple antennas.

Example of Multiple-Input Multiple-Output in a sentence:

"MIMO technology significantly enhances data transmission rates by using multiple antennas to send and receive more than one data signal simultaneously."

Related Terms for Multiple-Input Multiple-Output: