DemodOFDMSubcarType

This is a Data Header variable.

Type = Array of Short

Each DemodOFDMSubcarType value in the array specifies the type of subcarrier in the corresponding measurement data. If the subcarrier is an unused subcarrier (like the middle subcarrier in 802.11a), the subcarrier type value will be zero. If the subcarrier is a data subcarrier, the value will be one. If the subcarrier is a pilot subcarrier, the value will be two.

This variable is used by the display code to decide how to color each data point. Points for unused subcarriers are not plotted at all; points for data subcarriers are plotted with the normal data color; and points for pilot subcarriers are plotted with the pilot color.

Usually the length of the array is equal to the number of different subcarriers in the data, so for 802.11a and HiperLan/2 the array length is usually 53. However, for Error Vector Time data the length of the array is equal to the length of the data.

If the actual measurement data is longer than the subcarrier type array (which it normally is for all data except Error Vector Time), it is assumed that the subcarrier type array is reused over and over to specify the type each subcarrier in the data.