Combine Equalizer using L-LTF (802.11n/ac/ax/be)

Combine Equalizer using L-LTF enables the preamble's Legacy Long Training Field (L-LTF Non-HT Long Training field). Enabling this setting may improve the accuracy of channel estimation and EVM Error vector magnitude (EVM): A quality metric in digital communication systems. See the EVM metric in the Error Summary Table topic in each demodulator for more information on how EVM is calculated for that modulation format..

Cleared: (Default) Equalizer does not use L-LTF Long Training field for channel estimation. This setting is consistent with the specification, but may result in degraded performance.

Selected: Equalizer uses L-LTF for channel estimation. While this is not the default state for the specification, performance and resulting EVM are usually improved when Combine Equalizer using L-LTF is enabled.