What is MIMO

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Multiple input multiple output (MIMO) is an antenna system that consists of M transit antennas and N receive antennas. The MIMO technology allows spaces to become the resources used to improve performance and increases the coverage range of the wireless system.

The MIMO system generates multiple spatial flows with each antenna generating a maximum of one spatial flow. The single in single out (SISO) system sends or receives one spatial flow (one copy of signals) at a time. The MIMO technology allows multiple antennas to send and receive multiple spatial flows (multiple copies of signals) simultaneously and to differentiate the signals sent to or received from different spaces. An 802.11n device supports up to 4x4 MIMO, a maximum of four spatial flows, with a rate of up to 600 Mbit/s.

Other related questions:
What is the AP bandwidth when an AP does not use the MIMO antenna
Theoretically, the 802.11n APs support at most 150 Mbps bandwidth when not using MIMO antennas.

How does the AP bandwidth change if MIMO antennas are not used
802.11n APs support a maximum of 150 Mbit/s bandwidth if MIMO antennas are not used.

Can antennas in an antenna group on APs that support MIMO technology be used independently
Yes. When using independently, antennas using the MIMO technology cannot achieve the optimal performance. Multi-antenna MIMO technology can increase AP throughput and provide diversity receiving capability, improving the receive SNR.

What is AS
Auto Scaling (AS) is a service that automatically adjusts resources based on your service requirements and configured AS policies. You can specify AS configurations and policies based on service requirements. These configurations and policies free you from repeatedly adjusting resources to keep up with service changes and demand peaks, which helps you reduce the required resources and workforce.

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