Multiple input and multiple output
Multiple input and multiple output
(also MIMO)
Multiple input and multiple output (MIMO) definition
Multiple input multiple output (MIMO) is a technology used in wireless communication systems. With MIMO, several antennas are used at the transmitter and the receiver to help the system perform better. Using several antennas has many advantages — such as improving signal reliability and making communication more efficient. MIMO is used in wireless LANs, cellular networks, and broadband communications.
MIMO vs. SISO
The opposite of MIMO is SISO — single input and single output. Let’s compare the two technologies.
- Antennas. MIMO uses multiple antennas at the transmitter and receiver, while SISO uses a single antenna.
- Data transmission. MIMO allows for multiple data streams to be sent at the same time, while SISO only allows one at a time.
- Speeds. MIMO typically sends data much faster because several data streams can travel simultaneously.
- Signal. With MIMO, the signal is more reliable — even in places with obstacles or interference. SISO, on the other hand, isn’t as good as keeping the signal strong when there’s interference.
- Setup. Since MIMO is more advanced, it takes more advanced technology to implement. In comparison, SISO is simple to set up since it isn’t as complex.
- Use. Multiple input and multiple output is used in modern Wi-Fi routers, 4G/5G cellular networks, and high-speed communication systems. In comparison, you’re likely to see SISO in older Wi-Fi standards and legacy communication systems.