The Modulation Analysis Personality; Purpose - Agilent Technologies ESA-E Series User And Programming Manual

The Modulation Analysis Personality

Purpose

A thorough analysis of EVM (error vector magnitude) in a digital
communication system is invaluable for troubleshooting common errors
such as:
I/Q error
Symbol rate errors
Wrong filter coefficients
Wrong interpolation, IF filter tilt, or ripple
LO instability
Tone interference
AM/PM conversion errors
The Agilent Modulation Analysis Measurement Personality provides
this analysis of digitally-modulated signals for the following major
cellular standards:
cdmaOne (IS-95 and J-STD-008)
cdma2000 SR1
W-CDMA (3GPP)
NADC
EDGE
PDC
TETRA
In addition, the personality allows you to alter the filters and symbol
rates defined by the communication standards if the signal you are
analyzing differs from a defined radio standard.
This guide shows you how to set up the Agilent ESA to measure and
display the results of EVM using eye, constellation, and vector
diagrams, as well as tabular data. The key results provided are:
Peak and RMS EVM
Peak and RMS Magnitude error
Peak and RMS Phase error
Frequency error
I/Q offset
Droop error
EVM versus symbol display
Magnitude error versus symbol display
Phase error versus symbol display
Polar vector display
Polar constellation display
I and Q eye display
Chapter 4
Making Modulation Analysis Measurements
The Modulation Analysis Personality
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