Auto-detect Power Levels (LTE-Advanced)
Selected
Downlink
When is selected, the LTE-Advanced demodulator will detect the relative PDSCH power level for each user allocation (PA).
When is selected and RB Auto Detect Mode is set to , the Edit User Mapping... button on the tab is disabled since the demodulator will completely autodetect PDSCH.
For downlink signals, auto detection does not support Transmission Mode 9 beamforming.
The Round to Standard Value parameter determines whether the measured power levels are rounded to one of the standard power levels.
When is cleared, the codeword power levels for each user allocation need to be specified in the LTE Allocation Editor for EVM calculations to be correct. For Decode PDCCH mode, the Expected Num. of Users parameter determines the number of users that appear in the for which the power levels can be defined.
The auto-detected power levels can be viewed on the trace in the P_A(n) data result.
Uplink
When is selected, the LTE-Advanced demodulator will detect the relative uplink channel power levels for PUCCH, PUSCH, SRS, and PRACH.
When is cleared, the power levels for uplink channels will need to be specified on the corresponding tabs in the LTE Allocation Editor.
See Also
