Equalizer (Custom OFDM)

The Equalizer properties are used to configure and apply equalizer filtering to the measurement. The VSA uses an equalizer to correct for linear impairments in the signal path, such as multi-path and fading.

The Equalizer properties allow you to select what subcarrier data is included to initialize, or "train", the equalizer.

Parameter	Description
Equalizer Use Data	The equalizer training includes the Data subcarriers.
Equalizer Use DC Pilots	When Equalizer Use Pilots property is selected, the equalizer training includes the DC Pilot subcarrier.
Equalizer Use Pilots	The equalizer training includes the Pilot subcarriers. This feature is not available when Pilot In Time Domain is enabled. DC Pilot subcarrier is ignored. To include a DC Pilot subcarrier, select the Equalizer Use DC Pilots property.
Equalizer Use Preamble	The equalizer is trained uses the Channel Estimation Sequence in the preamble of the OFDM Orthogonal Frequency Division Multiplexing: OFDM employs multiple overlapping radio frequency carriers, each operating at a carefully chosen frequency that is Orthogonal to the others, to produce a transmission scheme that supports higher bit rates due to parallel channel operation. OFDM is an alternative tranmission scheme to DSSS and FHSS. burst. After this initialization, the equalizer coefficients are held constant while demodulating the rest of the burst.

Associated Trace Data Results

Ch Frequency Response