Unifi / UAP-AC-HD / Ceiling mount Gigabit POE+ Access Point

802.11ac Technology

Initial 802.11ac Wave 1 SU-MIMO (Single-User, Multiple Input, Multiple Output) technology allows an
earlier-generation AP, such as the UniFi AC Pro AP, to communicate with only one client at a time.
802.11ac Wave 2 MU-MIMO (Multi-User, Multiple Input, Multiple Output) technology allows a Wave 2 AP, such as
the UniFi HD AP, to communicate with multiple clients at the same time – significantly increasing multi-user
throughput and overall user experience.
The following describes a 5-client scenario:
MU-MIMO Assuming the same conditions, a Wave 2 AP
provides up to 75% improvement1
overall over a Wave 1
AP. This improvement increases wireless performance and/or serves more clients at the same performance level.
4×4 Spatial Streams At any single time, a Wave 2 AP can communicate with the following MU-MIMO clients:
• four 1×1 clients
• two 2×2 clients
• one 2×2 client and two 1×1 clients
• one 3×3 client and one 1×1 client
A 4×4 Wave 2 AP delivers up to 33% greater performance1 than a Wave 1 AP that is 3×3 in both radio bands.
Real-World Performance The UniFi HD AP is the first
UniFi 802.11ac Wave 2 AP. Combining the performance increases from MU-MIMO technology and the use of
4×4 spatial streams, the UniFi HD AP delivers up to 125%
greater performance1
than a typical Wave 1 AP.
Client Compatibility For optimal performance, use MU‑MIMO clients. SU‑MIMO clients will also benefit and
gain up to 10-20% greater performance when used with the UniFi HD AP.