Packet:OFDM:MCS Index Property
- Updated2023-02-21
- 2 minute(s) read
Short Name: MCS Index
Property of niWLANAnalysis
Specifies the modulation and coding scheme (MCS) index if you set the Standard property to 80211N MIMOOFDM, 80211AC MIMOOFDM, 80211AF MIMOOFDM, or 80211AX MIMOOFDM, and the OFDM Non-HT Modulation Mode property to OFF. Each index represents the modulation and coding used on the payload according to section 20.6 of IEEE Standard 802.11n-2009, section 22.5 of IEEE Standard 802.11ac-2013, section 23.5 of IEEE Standard 802.11af-2013, and section 27.5 of IEEE P802.11ax/D6.0.
The toolkit ignores this property if you set the OFDM Header Detection Enabled property to True for any PPDU types other than Trigger-Based PPDU.
The toolkit uses the value of this property as the MCS index for performing OFDM demodulation measurements.
You must use the following active channel string formats to configure this property.
| Standard Property Value | PPDU Type | Active Channel String Syntax |
|---|---|---|
| 80211N MIMOOFDM, 80211AF MIMOOFDM | — | "" (empty string) |
| 80211AC MIMOOFDM | SU PPDU | "" (empty string) |
| MU PPDU | "userx" | |
| 80211AX MIMOOFDM | SU PPDU, Extended Range SU PPDU | "" (empty string) |
| MU PPDU, Trigger-Based PPDU | "userx" |
The default value is 0. Valid values are 0 to 31, inclusive, for 80211N MIMOOFDM; 0 to 11, inclusive for 80211AC MIMOOFDM; -1 to 13, inclusive for 80211AX MIMOOFDM; and 0 to 9, inclusive, for 80211AF MIMOOFDM.
If you set this property to -1, MCS index is auto-detected for Trigger-Based PPDUs.
Remarks
The following table lists the characteristics of this property.
| Datatype |  |
| Permissions | Read/Write |
| High-level VIs | N/A |
| Resettable | No |