IQ Timing Skew (DOCSIS 4.0 Upstream)

IQ Timing Skew is the time difference between the I and Q branches within the Measurement Interval. IQ Timing Skew error can be caused by I and Q signal path length differences in the transmitter circuit.

The Measurement Interval must be longer than one symbol and contain at least one pair of subcarriers that are symmetric about DC for IQ Timing Skew to be calculated.