UL Spectrum Flatness (LTE)

The parameters for UL Spectrum Flatness are used to calculate the limit lines that are automatically added to the In-band Emissions trace.

See Section 6.5.2.4 of TS Technical Specification 36.521-1 for more information about spectrum flatness requirements.

Channel Condition

Specifies which set of requirements the limit lines are based on. Possible selections are Normal and Extreme.

Frequency band

The limits specified by the standard depend on the width of the frequency band containing the LTE Long Term Evolution signal and the location of the LTE frame within the band. This information is specified by the following parameters:

F_{UL CENTER}: specifies the center of the LTE frame within the frequency band determined by F_{UL Up Link (reverse link: from cell phone to base station) LOW} and F_{UL HIGH}.
F_UL LOW: specifies the lower band edge.
F_{UL HIGH}: specifies the upper band edge.

There is no dependency between these parameters and the VSA's center frequency.