Specifies the size of the guard interval of OFDM symbols.

For 802.11ax TB PPDU, 802.11be TB PPDU, and 802.11bn TB PPDU, you must always configure this property. For other signals, you must configure this property if the OFDM Header Decoding Enabled property is set to False.

You do not need to use a selector string to configure or read this property for the default signal instance. Refer to the Selector Strings topic for information about the string syntax for named signals.

The value of the property for different standards is given in the following table.

Standard Guard Interval Length
802.11n 1/4 - 0.8 us

1/8 - 0.4 us

1/16 - N.A
802.11ac 1/4 - 0.8 us

1/8 - 0.4 us

1/16 - N.A
802.11ax, 802.11be, 802.11bn 1/4 - 3.2 us

1/8 - 1.6 us

1/16 - 0.8 us

The default value is 1/4.

Remarks

The following table lists the characteristics of this property.

Short Name OFDM Guard Interval Type
Data type ci32.png
Permissions Read/Write
High-level VIs N/A
Resettable Yes
1/4 0

The guard interval is 1/4th of the IFFT duration.
1/8 1

The guard interval is 1/8th of the IFFT duration.
1/16 2

The guard interval is 1/16th of the IFFT duration.