Channel Margin Estimation Using Error Distribution Deviation
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Solution Overview
Problem
Current data transmission systems face challenges in accurately determining channel margin under real-world conditions without interrupting transmission, leading to suboptimal system configuration and potential system failure.
Innovation Solution
A method that monitors data transmission, estimates error distributions, and compares them to a reference channel to calculate a reduction in channel margin, allowing for accurate estimation without interrupting data transmission, using statistical analysis and error correction techniques like Kullback-Leibler divergence to assess information loss and adjust operating parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the system threshold and channel margin are evaluated using nominal values from reference channels, then the system configuration can be simplified, but the accuracy of margin assessment deteriorates under real-world channel conditions
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing reference channel margins and their corresponding error distributions for various operating points during system design. These pre-computed reference values are then used during operation to quickly assess actual channel margins by comparing measured error distributions against the stored reference data, avoiding complex real-time calculations while maintaining accuracy.
Solution Approach 2:
The patent uses copying by creating and storing copies of reference channel error distributions and margins for different operating conditions. During operation, the actual channel margin is determined by finding the closest matching reference copy based on measured error characteristics, allowing accurate margin assessment without complex real-time analysis of the actual channel behavior.
2Measurement precision
If the channel margin is determined by probing the system up to the point of breakdown, then the actual threshold can be accurately measured, but the transmission is disturbed and system reliability deteriorates
Solution Approach 1:
The patent applies feedback by continuously monitoring the error distribution of transmitted data and comparing it against reference error distributions. This feedback mechanism allows the system to accurately determine the channel margin under normal operating conditions without needing to probe to breakdown, thereby maintaining both measurement accuracy and transmission reliability simultaneously.
3Ease of manufacture
If the channel margin is assessed using a representative reference channel, then the deployment effort is reduced, but the accuracy of margin determination deteriorates due to poor representativeness
Solution Approach 1:
The patent applies universality by creating a comprehensive set of reference channel margins and error distributions that cover multiple channel conditions and impairments. This universal reference database can be applied to various real-world scenarios without requiring a specifically representative reference channel for each deployment, reducing deployment effort while maintaining accuracy through appropriate reference selection.
Data Source
AI summary
A system for determining a channel margin of a data transmission channel (DTC) using error correction under real-world channel conditions is described. The system includes a monitoring unit, an operating state determining unit and a data processing unit. The monitoring unit monitors data transmission along the DTC and estimates a statistical distribution of errors (H) in the transmission of data. The operating state determining unit determines a current value of an operating state parameter for the DTC. The data processing unit determines a reference channel margin associated with said current value of the operating state parameter for a reference channel and the error correction scheme employed, provides a statistical distribution of errors (HR) associated with said reference channel for said current value of said operating state parameter, compute a deviation of H and HR, and computes a reduction of the reference channel margin.