Est. Channel Delay Spread (802.11n/ac/ax/be)
When Interpolation Filter is set to Wiener, the appears and allows you to specify the expected channel delay spread (time between first and last significant reflections). The units are relative to the OFDM Orthogonal Frequency Division Multiplexing: OFDM employs multiple overlapping radio frequency carriers, each operating at a carefully chosen frequency that is Orthogonal to the others, to produce a transmission scheme that supports higher bit rates due to parallel channel operation. OFDM is an alternative tranmission scheme to DSSS and FHSS. symbol length, where 1 is the length of the OFDM symbol. Note that the value of this parameter should be no larger than the Guard Interval.
The optimal value (best 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.) depends on the channel.
Default: 0.125
Range: 0 to 0.25
See Also
