Tracking (Pre-5G)
The Tracking parameter determines the type(s) of timing compensation to be used in the demodulation.
Amplitude - When selected, the average amplitude of the subcarriers is tracked. This means that the average amplitude variation of the subcarriers is backed out of all subcarriers before they are used. If there is amplitude droop in the signal, this will cause the droop to be removed and ignored by the measurement. However, if there is no amplitude droop, this could make the measurement slightly less accurate because the tracking may try to compensate amplitude variation that is due to noise.
Frequency & Phase - When selected, the average phase of the subcarriers is tracked. This means that average phase variation of the subcarriers is backed out of all subcarriers before they are used. This is normally needed for proper demodulation, to track frequency and phase drift in the signal.
Timing - When selected, the tracking algorithm attempts to compensate for variation in the symbol timing of the signal. This can be used to track offset or drift of the symbol clock frequency. However, if the symbol clock frequency is accurate, this could make the measurement slightly less accurate because the tracking may incorrectly interpret noise as timing variation.
Trace Data
See Also
