Table Of Contents

MT Compute CCDF (G Dataflow)

Version:
    Last Modified: February 7, 2018

    Computes the complementary cumulative distribution function (CCDF).

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    input complex waveform

    Modulated complex waveform data.

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    x0

    Start time, in seconds, of the y array.

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    dx

    Time interval between data points in the y array.

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    y

    The complex signal values.

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    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.

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    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.

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    error in

    Error conditions that occur before this node runs.

    The node responds to this input according to standard error behavior.

    Standard Error Behavior

    Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

    error in does not contain an error error in contains an error
    If no error occurred before the node runs, the node begins execution normally.

    If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

    If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

    Default: No error

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    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.

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    measurements

    The measurement results.

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    average power

    The measured average power, in dBm.

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    avg pwr percentile

    The average power percentile as a percentage.

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    10% power

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

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    1% power

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

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    0.1% power

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

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    0.01% power

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

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    0.001% power

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

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    0.0001% power

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

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    peak power

    The measured peak power, in dB.

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    count

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

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    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.

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    error out

    Error information.

    The node produces this output according to standard error behavior.

    Standard Error Behavior

    Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

    error in does not contain an error error in contains an error
    If no error occurred before the node runs, the node begins execution normally.

    If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

    If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

    Complementary Cumulative Distribution Function Measurement

    The 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

    Web Server: Not supported in VIs that run in a web application


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