Home > Support > NI Product Manuals > LabVIEW Communications System Design Suite 1.0 Manual

Applies a flat fading profile to the input complex waveform. The faded waveform can be used to test receiver immunity to fading channels.

Note  

This node normalizes the fading profile to ensure that the power in the input complex waveform is equal to the fading variance. The Modulation Toolkit 4.0 version of MT Apply Flat Fading does not apply this normalization algorithm.

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

fading profile

The sample-by-sample profile to be applied to the input complex waveform. At each call, this node begins applying this fading profile from the index point where it left off on the previous iteration unless reset? is set to TRUE. Wire the fading profile parameter of MT Generate Fading Profile to this parameter.

Setting the right fading profile length

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 this node begins applying the fading profile at the index point where it left off on the last iteration.

TRUE Applies the fading profile at index point 0.
FALSE Does not apply the fading profile at index point 0.

Default: TRUE

datatype_icon

output complex waveform

The faded modulated complex baseband waveform data returned by this node. This parameter is always the same size as the input complex waveform, regardless of the size of the fading profile.

datatype_icon

t0

Time of the first value in the Y array.

datatype_icon

dt

Time interval between data values 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

error out

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