Limits RegistryPUBLIC RECORD
Limits RegistryIEEE 802.11ax (Wi-Fi 6/6E) and 802.11be (Wi-Fi 7) both define an optional 4096-QAM (4K-QAM) modulation mode, packing 12 bits per symbol, up from 1024-QAM (10 bits/symbol) in 802.11ac. This raises peak spectral efficiency substantially but only works reliably at very high signal-to-noise ratios and short range, so real-world use is limited to close-range, low-interference links.
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IEEE 802.11ax (Wi-Fi 6/6E) and 802.11be (Wi-Fi 7) both define an optional 4096-QAM (4K-QAM) modulation mode, packing 12 bits per symbol, up from 1024-QAM (10 bits/symbol) in 802.11ac. This raises peak spectral efficiency substantially but only works reliably at very high signal-to-noise ratios and short range, so real-world use is limited to close-range, low-interference links.
The highest-order QAM constellation (points per symbol) specified as an optional mode in a ratified, commercially deployed Wi-Fi standard as of 2026.
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Permanent ID limitsregistry.com/limits/LR-HIGHEST-ORDER-QAM-DEPLOYED
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Limits Registry. LR-HIGHEST-ORDER-QAM-DEPLOYED. Highest-order modulation constellation in a shipping wireless standard. 2026.