Keysight Pathwave 89600 VSA .NET API
GuardUpperSubcarriers Property
See Also 
Agilent.SA.Vsa.CustomOfdm.Interfaces Assembly > Agilent.SA.Vsa.CustomOfdm Namespace > MeasurementExtension Class : GuardUpperSubcarriers Property


Glossary Item Box

Gets or sets the number guard subcarriers above the used subcarriers.

Syntax

Visual Basic (Declaration) 
Public MustOverride Property GuardUpperSubcarriers As Integer
C# 
public abstract int GuardUpperSubcarriers {get; set;}
C++/CLI 
public:
abstract property int GuardUpperSubcarriers {
   int get();
   void set (    int value);
}

Property Value

The default value is 5. The maximum value is FftLength-GuardLowerSubcarriers-1, and the minimum is 0.

Remarks

Although an OFDM signal could theoretically use all FftLength subcarriers that are available, real signals normally have unused "guard" subcarriers surrounding the actual used subcarriers. This property specifies the number of guard subcarriers above the used subcarriers. These subcarriers are ignored - they don't appear in any results, and are not part of the ResourceMap or ResourceModulation arrays.

Note that subcarriers are numbered from -FftLength/2 to +FftLength/2-1. If the signal definition is centered around subcarrier zero (which is normally the case), then the value of GuardLowerSubcarriers will be one larger than the value of GuardUpperSubcarriers.

Requirements

Target Platforms: Windows 11 Professional or Enterprise; Windows 10 Professional, Enterprise, or Education (64-bit)

See Also