Modulation Coding Scheme (MCS) Index

The Modulation Coding Scheme (MCS) Index Table

Modulation Coding Scheme Index Table (MCS Index)
802.11n - 802.11ac - 802.11ax

Refer to Notes at bottom for the MCS differences between the 802.11n, 802.11ac, and 802.11ax standards
Notes:
  • 802.11n utilizes only MCS Index 0 through 7 with up to 3 spatial streams
  • 802.11ac utilizes all the MCS Index values shown in the table above
  • 802.11ax utilizes all the MCS index values however the Guard Interval (GI) values increase from 400ns to 800ns and from 800ns to 1600ns
  • 802.11ax introduces MCS Index values 9 and 10 supporting 1024-QAM modulation

802.11ac

Definition
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