Open Cable System Performance Indicator Determination
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Solution Overview
Problem
The existing methods for determining performance indicators in submarine cable systems constructed using the Open Cable mode are inadequate, as they do not account for nonlinear noise and other factors, leading to inaccurate system performance evaluation.
Innovation Solution
A method that involves obtaining test results in two different environments, determining an external SNR value, and then calculating an intrinsic SNR value by considering linear SNR, nonlinear SNR, and GAWBS SNR, to provide a comprehensive performance indicator for Open Cable systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional Q value and OSNR testing methods are used for Open Cable systems, then the testing process is simple, but the measurement precision is insufficient due to not accounting for nonlinear noise
Solution Approach 1:
The patent segments the SNR measurement into two distinct parts: external SNR (measured from test results) and intrinsic SNR (calculated from system parameters). This segmentation allows each component to be measured and analyzed separately, improving overall measurement precision while maintaining manageable complexity.
Solution Approach 2:
The patent introduces an intermediary calculation method that uses the relationship between external SNR, intrinsic SNR, and system parameters (linear SNR, nonlinear SNR, GAWBS SNR) to bridge the gap between simple measurements and comprehensive performance evaluation.
2Measurement precision
If comprehensive noise factors including nonlinear noise are considered, then the measurement precision improves, but the ease of operation deteriorates due to multiple measurement requirements
Solution Approach 1:
The patent performs preliminary measurements of system parameters (linear SNR, nonlinear SNR, GAWBS SNR) that can be obtained through standard testing procedures. These preliminary results are then used in the intrinsic SNR calculation, allowing comprehensive evaluation without requiring entirely new measurement methodologies.
Solution Approach 2:
The patent establishes a feedback relationship where the intrinsic SNR calculation results can be used to validate and refine the external SNR measurements, creating a self-consistent measurement system that improves accuracy while maintaining operational feasibility.
Data Source
AI summary
A method for determining a performance indicator is performed by an electronic device. The method includes: obtaining a first test result by testing preset indicators of a repeated Open Cable system in a first test environment, and obtaining a second test result by testing the preset indicators of the repeated Open Cable system in a second test environment, in which the preset indicators include a quality factor Q value and a linear signal noise ratio (SNR); determining an external SNR value of the system based on the first test result and the second test result; and determining an intrinsic SNR value of the system based on the external SNR value, the linear SNR, a nonlinear SNR, and a guided acousto-optic wave Brillouin scattering (GAWBS) SNR.