Keysight M9421A - MCS of Trigger-based PPDU

3 WLAN Mode
3.6 Modulation Analysis Measurement
<rel_ampl>, ... MCS Index RMS EVM Limit Preset value (dB)
#14 13 -38
#15 15 -27
MCS of Trigger-based PPDU
This parameter is available only when Radio Std is 802.11ax/11be.
MCS (Modulation Coding Scheme) information is defined in Trigger Frame, with a
range from 0~15. Trigger-based PPDU format is used for a PPDU that is a response
of a Trigger frame, which does not include MCS information. You need to manually
set the MCS information to select EVM limit for your test.
See "More Information about HE PPDU " on page 1063.
Remote Command
:CALCulate:EVM:TBASed:MCS <integer>
:CALCulate:EVM:TBASed:MCS?
Example
:CALC:EVM:TBAS:MCS 8
:CALC:EVM:TBAS:MCS?
Dependencies Only available for 11ax/be
Preset 1
State Saved Saved in instrument state
Min 0
Max 15
Backwards Compatibility
SCPI
:CALCulate:EVM:AX:TBASed:MCS <integer>
:CALCulate:EVM:AX:TBASed:MCS?
More Information about HE PPDU
HE PPDU has four formats. The FORMAT parameter determines the overall structure
of the PPDU:
–
HE SU PPDU format is used for single-user PPDU, if FORMAT=HE_SU. In HE SU
PPDU format, the HE-SIG-A field is not repeated. Support for the HE SU PPDU
format is mandatory
–
HE MU PPDU format is used for a multi-user PPDU that is not a response of a
Trigger frame, if FORMAT=HE_MU. It is similar to SU format, except that an HE-
SIG-B field is present. Support for the HE MU PPDU format is mandatory
–
HE extended range SU PPDU format is used for single-user PPDU, if
FORMAT=HE_EXT_SU. It is similar to SU format, except that the HE-SIG-A field
is repeated. Support for the HE extended range SU PPDU format is TBD
(mandatory or optional)
1063 WLAN Mode User's &Programmer's Reference