MU MIMO Explained

Multi-user and Multi-input Multi-output terms we use in Wireless Technology works in 5GHz. MIMO is the multiple antennas at both the transmitter and receiver to improve communication performance is knows as MIMO. MU MIMO explained below in details.

What is MU MIMO ?

• It stand for multi-user, Multiple input, multiple output.
• Wireless technology called MU-MIMO.
• Introduced with the 802.11ac wave 2 wireless standard.
• It is allows multiple wireless devices to communication with a Wi-Fi router at the same time.
• Previously routers communication with devices using SU-MIMO.
• It allows communication to multiple devices all the same time.
• MU-MIMO only works in 5 GHz in Wi-Fi 5.

Multi-user and Multi-input Multi-output Beamforming

• MU-MIMO also advantage of beamforming.
• Beamforming is technique that sends transmissions in a specific direction which strengthens a signal.

Wi-Fi 6

• The new 802.11ax standard, which known as Wi-Fi 6.
• It works both 2.4 GHz and 5 GHz.
• supports 8 or more simultaneous streams.

Multi-user and Multi-input Multi-output Routers Variations

• 2×2 :- It means 2 antennas for 2 streams.
• 3×3 :- It means 3 antennas for 3 streams.
• 4×4 :- It means 4 antennas for 4 streams.

Featured of MU-MIMO

• Router Must Support at least the 802.11ac wave 2 standard (Wi-Fi 5).
• Router must specifically state that it supports MU-MIMO.
• Devices that connected must also support MU-MIMO.
• Only Supported a limit of 4 simultaneous streams in Wi-Fi 5.
• Only affects download and not upload in Wi-Fi 5 .
• MU-MIMO dramatically improves performance and efficiency

SU-MIMO Explained

• Wireless technology which was 802.11n.
• Basically Single-User ,Multiple input, multiple output (SU-MIMO) works on first come first serve basis.
• This also allowed wi-fi routers to communicate with multiple devices but only with one device at a time.

Different between Single User MIMO or Multi User MIMO

SU-MIMO the AP transmits one at a time to each client. MU-MIMO allows the access point to send multiple data packets to multiple clients over the same frequency.

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