Returns the size of the guard interval of OFDM symbols.

Syntax

RFMXWLAN_ATTR_OFDMMODACC_RESULTS_GUARD_INTERVAL_TYPE

Numeric Value

Data Type

Access

Applies To

10502199

int32

Read-Only

N/A

Remarks


This result is always 1/4 for 802.11a, 802.11j, and 802.11p signals. The value is decoded for various standards as follows:

Standards

Fields

802.11n

The guard interval type is decoded from HT-SIG field.

802.11ac

The guard interval type is decoded from VHT-SIG-A field.

802.11ax

The guard interval type is decoded from HE-SIG-A field.

802.11be

The guard interval type is decoded from EHT-SIG field.

For 802.11ax or 802.11be TB PPDU signals, the attribute returns the same value as the RFMXWLAN_ATTR_OFDM_GUARD_INTERVAL_TYPE attribute.

You do not need to use a selector string to read this result for default signal and result instance. Refer to the Selector String topic for information about the string syntax for named signals and results.

Name

Value

Description

RFMXWLAN_VAL_OFDM_GUARD_INTERVAL_TYPE_1_4

0 (0x0)

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

RFMXWLAN_VAL_OFDM_GUARD_INTERVAL_TYPE_1_8

1 (0x1)

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

RFMXWLAN_VAL_OFDM_GUARD_INTERVAL_TYPE_1_16

2 (0x2)

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