Common Tracking Error (LTE-Advanced)
EVM Minimization. The complex value for each symbol is the average of subcarrier phase and amplitude corrections to that symbol. When is set to , the trace still shows the tracking error for each symbol, but tracking is calculated per slot (uplink) or per subframe (downlink).
shows the corrections calculated byFor signals with multiple C-RS Cell-specific RS antenna ports, this trace shows the tracking information of the path determined by the Ref Meas Channel and Ref C-RS Port parameters.
To view the tracking information for all C-RS/Rx paths simultaneously, select the MIMO Common Tracking Error trace.
The trace format, such as or , is selected.
trace can show phase or amplitude error when the appropriateTracking information is calculated and shown in this trace whether or not the corrections are applied to the signal.
The information in the FFT Fast Fourier Transform: A mathematical operation performed on a time-domain signal to yield the individual spectral components that constitute the signal. See Spectrum. location determined by the Symbol Timing Adjust parameter.
trace is calculated from a symbolEVM Minimization for more information.
always shows corrections for each symbol even when corrections are applied on a slot-by-slot or subframe-by-subframe basis. SeeSee Also