3 WLAN Mode
3.7 WLAN MIMO Modulation Analysis Measurement
Cross-Correlated EVM
Cross-Correlated EVM (ccEVM) is a technique applied to RMS EVM measurement. It
suppresses analyzer noise, resulting in a lower EVM floor. A 2-channel analyzer, or
two analyzers, demodulate the same signal independently, and perform cross-
correlation on the error vectors to cancel out uncorrelated noise added by the
analyzer.
Differences in impedance mismatch and amplitude/phase unflatness between
channels are examples of uncorrelated noise between analyzers.
Remote Command
[:SENSe]:EVMMimo:CCEVm[:ENABle] OFF | ON | 0 | 1
[:SENSe]:EVMMimo:CCEVm[:ENABle]?
Example
:EVMM:CCEV 1
:EVMM:CCEV?
Notes Before ccEVM, Remote Analyzer should be configured in Meas Setup\Global\Remote Analyzer Config
Dependencies It is grayed out for 802.11ajgp/11b/11ah/11af, 802.11ac/ax 80MHz + 80MHz and Radio Std
Detection is On
Preset OFF
State Saved Saved in instrument state
Range On|Off
Power Reference Plane
Allows you to increase the power by 3dB for Baseband I+jQ measurements. Options
are:
Menu SCPI
Baseband
BASeband
RF
RF
Remote Command For valid <meas> values, see "Valid Measurement Keywords" on page 1285
[:SENSe]:<meas>:POWer:IQ:REFerence:PLANe RF | BASeband
[:SENSe]:<meas>:POWer:IQ:REFerence:PLANe?
Example (Complex Spectrum measurement)
SPEC:POW:IQ:REF:PLAN BAS
SPEC:POW:IQ:REF:PLAN?
Dependencies Only available if the I/Q input exists
Enabled only when the input is I/Q and I/Q Path is I+jQ
Disabled for all other conditions
Preset
RF
WLAN Mode User's &Programmer's Reference 1284
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