Table Of Contents

MT Calculate Power Adjustment and PAPR (G Dataflow)

Last Modified: January 9, 2017

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.

spd-note-note
Note  

The input complex waveform must be scaled by the worst case scaling factor generated by MT Calculate Worst Case Scaling Factor (Modulation and Resample).

connector_pane_image
datatype_icon

input complex waveform

The modulated complex baseband waveform data.

datatype_icon

t0

Trigger (start) time of the Y array.

Default: 0.0

datatype_icon

dt

Time interval between data points in the Y array.

Default: 1.0

datatype_icon

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.

datatype_icon

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.

datatype_icon

error in

Error conditions that occur before this node runs. The node responds to this input according to standard error behavior.

Default: no error

datatype_icon

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: TRUE

datatype_icon

Full Scale Adjustment

The number by which the NI-RFSG power level must be adjusted.

datatype_icon

PAPR

PAPR of the scaled input complex waveform, where the scaling factor is derived from MT Calculate Worst Case Scaling Factor.

datatype_icon

error out

Error information. The node produces this output according to standard error behavior.

Where This Node Can Run:

Desktop OS: Windows

FPGA: Not supported


Recently Viewed Topics