# MT Compute CCDF (G Dataflow)

Computes the complementary cumulative distribution function (CCDF).

## input complex waveform

Modulated complex waveform data.

### x0

Start time, in seconds, of the y array.

### dx

Time interval between data points in the y array.

### y

The complex signal values.

## lowpass filter type

A value that indicates the type of filter to use for filtering the samples before calculating the CCDF.

Name Description
Gaussian

Uses a Gaussian filter.

Flat

Uses a flat filter.

None

Does not use any filter.

## lowpass filter bandwidth

The bandwidth, in Hertz (Hz), of the lowpass filter. The lowpass filter is the front-end digital filter that is applied to the acquired signal. Use the filter to remove the out-of-band signal content before computing the CCDF.

## error in

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

Default: no error

## reset?

A Boolean that determines whether to reinitialize the computation of average and peak power. If you set this parameter to TRUE, the node discards information about the accumulated peak and average power values in previous calls to the node.

## measurements

The measurement results.

### average power

The measured average power, in dBm.

### avg pwr percentile

The average power percentile as a percentage.

### 10% power

The measured power in 10% of the total power, in dB.

### 1% power

The measured power in 1% of the total power, in dB.

### 0.1% power

The measured power in 0.1% of the total power, in dB.

### 0.01% power

The measured power in 0.01% of the total power, in dB.

### 0.001% power

The measured power in 0.001% of the total power, in dB.

### 0.0001% power

The measured power in 0.0001% of the total power, in dB.

### peak power

The measured peak power, in dB.

### count

Number of samples across all iterations, including the current iteration.

## CCDF traces

Two CCDF traces. One trace corresponds to the input complex waveform, and the other trace is the CCDF of a Gaussian variate of zero mean and unit variance with the same bin size.

## error out

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

## Complementary Cumulative Distribution Function Measurement

The complementary cumulative distribution function (CCDF) is a statistical characterization of time-domain waveform that completely describes the power characteristics of a signal.

A CCDF graph relates average signal power (x-axis) to signal power statistics (y-axis) such that each point on the CCDF curve shows how much time a signal spends at or above a given power level. The power level is expressed in dB relative to the average signal power level.

Where This Node Can Run:

Desktop OS: Windows

FPGA: Not supported