OFDMA RU Explorer — 802.11ax Resource Unit Reference
Interactive subcarrier allocation map for 802.11ax HE OFDMA. Explore 26-tone, 52-tone, and 106-tone Resource Unit modes across a 20 MHz channel — with DC null detail, guard band visualization, and spec-verified subcarrier indices from IEEE 802.11-2024.
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802.11ax OFDMA — Resource Unit Explorer
WiTS Academy · Wi-Fi Foundations · HE OFDMA Subcarrier Allocation
Interactive Reference
Select RU Allocation Mode
802.11ax HE OFDMA · 20 MHz Channel
106-Tone HE OFDMA — 2 RUs per 20 MHz channel
Maximum RU size. Two 106-tone RUs, one per half-channel. Supports up to 2 simultaneous OFDMA users.
Subcarrier index 0 = 5180 MHz center (DC null) · Orange line marks DC subcarrier · Click any RU block for details
DC Region Zoom — Center ±25 Subcarriers
Select an RU
Click any colored RU block in the spectrum bar or the DC zoom above to display its properties.
Legend
Guard band (unused)
DC null region