Communication Medium Impairment Identification via Impulse Response Analysis

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Solution Overview

Problem

Communication networks face challenges in identifying and correcting impairments such as standing wave and water impairments in communication mediums, which can significantly degrade data transmission, especially with high-frequency signals.

Innovation Solution

A system and method for automatically identifying impairments in communication mediums by analyzing the impulse response and spectrum response, distinguishing between standing wave and water impairments based on characteristics like coefficient distribution, cumulative distribution function, and tilt in the spectrum response, to facilitate faster and more efficient maintenance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If sophisticated modulation techniques are used to transmit data at high bandwidth, then data transmission capability is improved, but the system becomes more sensitive to communication medium impairments

Engineering Contradiction:
Improvedata transmission bandwidthVSAvoiddata transmission reliability
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The system performs preliminary impairment identification by analyzing impulse response characteristics before data transmission occurs. By detecting standing wave and water impairments in advance and notifying network operations center, the system prevents transmission failures rather than reacting to them, allowing proactive maintenance while enabling high-bandwidth modulation techniques

Inventive Principle:
Principle #10Preliminary action

2Loss of time

If automatic impairment identification is implemented, then maintenance time is reduced, but system complexity increases

Engineering Contradiction:
Improvemaintenance timeVSAvoiddiagnostic system complexity
Core Design Contradiction:
Loss of timeVSDevice complexity

Solution Approach 1:

The system enables self-diagnosis by automatically analyzing impulse response characteristics and identifying impairment types without requiring technician expertise. The automated classification of standing wave versus water impairments based on coefficient distribution patterns allows the communication medium itself to report its condition, reducing maintenance time while the complexity is confined to the automated diagnostic algorithm

Inventive Principle:
Principle #25Self-service

3Measurement precision

If detailed analysis of impulse response characteristics is performed to distinguish impairment types, then measurement precision is improved, but computational complexity increases

Engineering Contradiction:
Improveimpairment identification accuracyVSAvoidsignal processing complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The system segments the impulse response into discrete coefficients and analyzes specific characteristics such as coefficient distribution patterns and cumulative distribution functions. By dividing the complex signal into manageable coefficient segments and applying statistical analysis, the system achieves precise impairment type differentiation while keeping computational requirements tractable through structured signal decomposition

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS11316715B1Systems and method for automatically identifying an impairment of a communication medium
Publication Date: 2022.04.26 CABLE TELEVISION LAB INC
  • US11316715B1 patent drawing
  • US11316715B1 patent drawing
  • US11316715B1 patent drawing

AI summary

A method for automatically identifying an impairment of a communication medium includes (1) obtaining a spectrum response of communication signals traveling through the communication medium, (2) converting the spectrum response from a frequency domain to a time domain, to generate an impulse response, and (3) identifying the impairment of the communication medium at least partially based on one or more characteristics of the impulse response.