Agilent Technologies ESA-E Series User And Programming Manual page 46

Making Modulation Analysis Measurements
Interpreting Measurement Results
Polar Vector of Signal Using a 0.22 Filter α
Figure 4-9
2. In contrast, refer to
To change the filter α of the analyzer, press
NOTE
Polar Vector of Signal Using a 1.0 Filter α
Figure 4-10
32
Figure
with a filter α of 1. Observe that there are smaller overshoots in the
trajectories between the symbol points (item 1) due to the increased
alpha. This limits the required peak power and reduces the
transmitter power requirements. Item 2 shows spreading of the
decision points due to the increased EVM (item 3.)
4-10. A Wideband CDMA signal is shown
Det/Demod, Alpha/BT.
Chapter 4