Returns the maximum value among the code domain errors (CDEs), in dB.

This VI calculates the CDEs by projecting the descrambled error vector onto the code domain at a specific spreading factor.

The CDE for every code with a specific spreading factor is defined as the ratio of the mean power of the projection onto that code to the mean power of the composite reference waveform. A fixed spreading factor of 32 is used.

This VI computes the CDEs separately for I and Q branches.


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Inputs/Outputs

  • cstr.png Selector String —

    Selector String specifies a selector string comprising of the signal name and result name. If you do not specify the signal name, the default signal instance is used. If you do not specify the result name, the default result instance is used. The default value is "" (empty string).

    Examples:

    ""

    "signal::sig1"

    "result::r1"

    "signal::sig1/result::r1"

    You can use the RFmxCDMA2k Build Signal String VI to build the selector string.

  • cgenclassrntag.png Instrument Handle In —

    Instrument Handle In specifies the RFmx session refnum. Instrument Handle In is obtained from the RFmxInstr Initialize NIRFSA VI.

  • cdbl.png Timeout (s) —

    Timeout specifies the timeout for fetching the specified measurement. This value is expressed in seconds. Set this value to an appropriate time, longer than expected for fetching the measurement. A value of -1 specifies that the VI waits until the measurement is complete. The default value is 10.

  • cerrcodeclst.png error in (no error) —

    error in describes error conditions that occur before this node runs. This input provides standard error in functionality.

  • ii32.png Peak CDE Branch —

    Peak CDE Branch returns the branch of the channel corresponding to the Peak CDE value.

    I (0) The signal is modulated on the in-phase branch.
    Q (1) The signal is modulated on the quadrature branch.
  • igenclassrntag.png Instrument Handle Out —

    Instrument Handle Out passes a reference to your RFmx session to the next VI.

  • idbl.png Peak CDE (dB) —

    Peak CDE returns the maximum value among the code domain errors. This value is expressed in dB.

  • ii32.png Peak CDE Walsh Code Number —

    Peak CDE Walsh Code Number returns the code number of the channel corresponding to the Peak CDE value.

  • ierrcodeclst.png error out —

    error out contains error information. This output provides standard error out functionality.