What is MIMO Technology?

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Editorial Team - everything RF

Apr 4, 2019

Multiple-Input Multiple-Output abbreviated as MIMO, is a wireless technology that increases the data capacity of a RF radio by using multiple transmitting and receiving antennas.

In a MIMO system, same data is transmitted through multiple antennas over the same path in the same bandwidth. Because of this each signal reaches the receiving antenna through a different path, resulting in more reliable data. The data rate also increases by a factor determined by the number of transmit and receive antennas.

The receiver is designed to take into account the slight time difference between receptions of each signal as they travel through different paths, any additional noise or interference, and even lost signals.

Advantages of a MIMO system:

  • A MIMO system provides better signal strength even without clear line-of-site as they utilize the bounced and reflected RF transmissions. 
  • The higher throughput allows better quality and quantity of video sent over the network.
  • Multiple data streams reduces the number of lost data packets, which results in better video or audio quality.

Typical MIMO Configurations:

  • 2x2 MIMO (two transmit antennas, two receive antennas)
  • 3x3 MIMO (three transmit antennas, three receive antennas)
  • 4x4 MIMO (four transmit antennas, four receive antennas)
  • 8x8 MIMO (eight transmit antennas, eight receive antennas)

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