MT Calculate Power Adjustment and PAPR
- Updated2023-02-17
- 3 minute(s) read
MT Calculate Power Adjustment and PAPR
Calculates the full-scale power adjustment and the peak-to-average power ratio (PAPR).
In the NI-RFSG peak-power mode, after scaling the waveform to a value between +1 and -1, the waveform power may not be at the desired level. You can use the full scale adjustment parameter to compensate for the loss in power and the PAPR parameter to change the average power of the modulated waveform to the peak power specifically required for streaming mode.
Inputs/Outputs
input complex waveform
The modulated complex baseband waveform data.
t0
Trigger (start) time of the Y array.
Default value: 0.0
dt
Time interval between data points in the Y array.
Default value: 1.0
Y
The complex-valued signal-only baseband modulated waveform. The real and imaginary parts of this complex data array correspond to the in-phase (I) and quadrature-phase (Q) data, respectively.
waveform scaling factor
Scaling factor used on the waveform to position it between +1 and -1. Typically, you have to wire this parameter from the waveform scaling factor parameter of MT Calculate Worst Case Scaling Factor.
This node uses this parameter to scale the input complex waveform.
error in
Error conditions that occur before this node runs.
The node responds to this input according to standard error behavior.
Default value: No error
reset?
A Boolean that determines whether to calculate the full scale adjustment and PAPR parameters. On first call, reset? is set to TRUE by default.
| TRUE | Calculates the full scale adjustment and PAPR parameters. |
| FALSE | Continues without calculating the full scale adjustment and PAPR parameters. |
Default value: TRUE
Full Scale Adjustment
The number by which the NI-RFSG power level must be adjusted.
PAPR
PAPR of the scaled input complex waveform, where the scaling factor is derived from MT Calculate Worst Case Scaling Factor.
error out
Error information.
The node produces this output according to standard error behavior.