Optical Channel Amplitude Compensation for Low-BER Data Recovery
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Solution Overview
Problem
Optical networks experience significant amplitude errors and long amplitude recovery delays, leading to reduced data recovery accuracy and increased bit error rates due to large amplitude differences between optical signals and the required signal amplitudes, which are addressed by using a method to compensate for amplitude errors in optical communication systems.
Innovation Solution
A method involving amplitude compensation coefficients determined by a controller based on optical channel identifiers to reduce amplitude errors and recovery delays, allowing for efficient data transmission without the need for preambles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the optical receiving device uses traditional amplitude recovery method with preambles, then the amplitude error can be detected and corrected, but the amplitude recovery delay becomes long and data transmission efficiency is reduced
Solution Approach 1:
The controller pre-calculates and stores amplitude compensation coefficients for different optical channels before actual data transmission. When data needs to be transmitted, the receiving device simply retrieves the pre-calculated coefficient corresponding to the optical channel identifier, avoiding the time-consuming process of real-time amplitude detection and calculation.
Solution Approach 2:
The patent extracts the amplitude compensation function from the data transmission process by using separate preambleless amplitude compensation. The optical signal carries both amplitude information and data information, and the receiving device extracts amplitude compensation coefficients based on optical channel identifiers without requiring traditional preamble sequences.
2Measurement precision
If the optical receiving device uses traditional amplitude recovery method with preambles, then the amplitude error can be detected and corrected, but the preamble overheads increase and data transmission efficiency is reduced
Solution Approach 1:
The patent removes the traditional preamble structure from the optical signal. Instead of using dedicated preamble sequences for amplitude detection, the system extracts amplitude compensation information directly from the optical channel identifier, eliminating preamble overhead and increasing data transmission efficiency.
Solution Approach 2:
The optical channel identifier serves multiple functions: it identifies the optical channel route and simultaneously provides the basis for retrieving the appropriate amplitude compensation coefficient. This multi-functionality eliminates the need for separate preamble sequences, reducing overhead while maintaining amplitude recovery capability.
3Adaptability or versatility
If the optical transmitting device sends optical signals with different amplitudes through different optical channels, then the data can be transmitted flexibly, but the amplitude difference causes data recovery errors and increases bit error rate
Solution Approach 1:
The patent applies different amplitude compensation coefficients to different optical channels based on their specific characteristics. Each optical channel has its own pre-calculated coefficient that compensates for the specific amplitude attenuation or distortion of that channel, ensuring optimal data recovery accuracy for each channel while maintaining transmission flexibility.
Solution Approach 2:
The system uses the optical channel identifier as feedback to select the appropriate amplitude compensation coefficient. The receiving device identifies the optical channel through the identifier, retrieves the corresponding pre-calculated coefficient, and applies it to compensate for amplitude errors, creating a closed-loop feedback mechanism that ensures accurate data recovery.
Data Source
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AI summary
A method, a system, and a related device are provided. The method includes: A controller may determine a first optical channel between an optical transmitting device and an optical receiving device in a first slot based on a data transmission request, and then send configuration information to the optical transmitting device or the optical receiving device, to indicate the optical transmitting device or the optical receiving device to transmit data in the first slot based on an amplitude compensation coefficient of the first optical channel. This helps compensate for amplitude distortion caused by the first optical channel and reduce a bit error rate.