Equalizer Coefficient Adjustment via Jones Matrix Singularity
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Solution Overview
Problem
In high-speed optical transmission systems, existing equalizers lack control over their coefficients, leading to instability due to unadjusted X-axis and Y-axis polarization centers, which affects system performance and stability.
Innovation Solution
A method and device that adjust the coefficients of an equalizer by using a Jones matrix to determine singularity characteristics and central position deviations, allowing for precise adjustment of X-axis and Y-axis polarization coefficients to align their centers, thereby improving filter performance and system stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing equalizer adjustment methods are used, then both coefficients of X-axis and Y-axis polarizations are shifted in the same direction, but the center of the coefficients cannot be adjusted to the central position of taps, impacting system stability
Solution Approach 1:
The patent segments the equalizer coefficient adjustment into two independent parts: (1) adjusting the center position of taps for each polarization separately, and (2) adjusting the coefficients in the segmented direction. This allows the X-axis and Y-axis polarization centers to be adjusted independently to the central position of taps, resolving the contradiction between adjustment precision and system stability that existed when both coefficients were shifted together in the same direction.
2Ease of operation
If no control over equalizer coefficients is involved, then the system is simpler to operate, but system stability is compromised due to unadjusted polarization centers
Solution Approach 1:
The patent implements a self-service mechanism where the equalizer automatically detects when the center of coefficients deviates from the central position of taps and autonomously adjusts the center position and coefficients accordingly. This eliminates the need for manual intervention while ensuring system stability, resolving the contradiction between operational simplicity and reliability.
3Reliability
If manual adjustment of equalizer coefficients is performed, then system stability can be improved, but the complexity of operation increases
Solution Approach 1:
The patent incorporates a feedback mechanism that continuously monitors the center position of equalizer coefficients and automatically triggers adjustment when deviation is detected. This feedback-based automatic control improves system stability without requiring complex manual adjustment procedures, as the system self-regulates based on real-time monitoring of its own state.
Data Source
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AI summary
Disclosed is an adjustment method for an equalizer coefficient, comprising: using coefficients of an equalizer to obtain a corresponding jones matrix; using the jones matrix to obtain a parameter of the jones matrix; using the parameter of the jones matrix to adjust a coefficient of an X axis polarization state or a Y axis polarization state in the coefficients when it is determined that the coefficients have singularity characteristics, or using two coefficients of an X axis or a Y axis polarization state in the equalizer coefficients to determine energy corresponding to each of the coefficients of the X axis or Y axis polarization state under each order of a filter in the equalizer; and using the energy corresponding to each of the coefficients of the X axis or Y axis polarization state under each order of the filter to adjust a central position of a coefficient tap of the X axis or Y axis polarization state of the equalizer when it is determined that the coefficient tap of the X axis or Y axis polarization state of the equalizer deviates from the central position. Also disclosed are an adjustment device for an equalizer coefficient and a computer storage medium at the same time.