EXFO PSO-200 Optical Modulation Analyzer User Manual
Page 81
Viewing and Analyzing Results
Optical Modulation Analyzer
73
Applying Advanced Signal Processing Algorithms
Waveform Estimation Phase Tracking
Increases the PSO-200 phase tracking ability in presence of a large
amount of signal phase noise (>1-2 MHz for QPSK). Use when
constellation transitions (green samples) suffer from large phase noise
whereas symbol center points (white samples) do not spread in phase
direction. It utilizes information from the previously acquired
waveform to improve the phase tracking of signal transitions.
Note: This algorithm slows down the overall performance.
No Phase
Tracking
Using Phase
Tracking
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