Parallel Error Correction Circuits for Variable Optical Data Rates
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Solution Overview
Problem
Current error correction systems in optical transmission systems struggle to handle various transmission rates and distances efficiently, leading to increased circuit complexity and scale, as they are not designed to accommodate flexible signal rates and require separate circuits for each transmission rate.
Innovation Solution
The implementation of parallel encoding and decoding circuits that adjust output bus width and operation clock frequency to accommodate different transmission rates, allowing for flexible handling of multiple code sequences and interleaving without significant increases in circuit scale.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate error correction circuits are prepared for each transmission rate, then error correction performance for specific rates is optimized, but device complexity and circuit scale increase significantly
Solution Approach 1:
The patent implements a universal error correction circuit that can handle multiple transmission rates (100G, 200G, 400G) through a single unified architecture. The circuit uses configurable parameters such as information bit length, parity bit length, and code length to adapt to different rates without requiring separate dedicated circuits for each rate, thereby reducing overall device complexity while maintaining error correction performance.
Solution Approach 2:
The error correction circuit employs dynamic configuration capabilities where parameters like the number of parallel circuits, information bit length, and parity bit length can be adjusted based on the required transmission rate. This dynamic adaptability allows the same hardware infrastructure to serve multiple functions across different transmission scenarios, avoiding the need for static separate circuits for each rate.
2Adaptability or versatility
If parallel encoding and decoding circuits are implemented to handle various transmission rates, then transmission capacity and flexibility are improved, but circuit complexity increases
Solution Approach 1:
The patent segments the error correction function into modular parallel circuits that can be selectively activated based on transmission rate requirements. Each parallel circuit handles specific rate configurations, and the system dynamically selects and activates the appropriate number of parallel circuits needed, rather than permanently instantiating all possible rate-handling circuits. This segmentation approach provides flexibility while controlling complexity through selective activation.
Solution Approach 2:
The system achieves transmission rate flexibility by changing operational parameters such as information bit length, parity bit length, and code length rather than requiring fundamentally different circuit architectures for each rate. These parameter adjustments allow the same base circuit structure to adapt to different transmission rates, reducing circuit complexity while maintaining versatility.
3Reliability
If interleaving operations are performed for burst error handling, then error correction capability is improved, but processing latency increases
Solution Approach 1:
The patent implements partial interleaving where only the necessary portions of data are interleaved based on the specific error characteristics and transmission conditions. Rather than performing full interleaving on all data regardless of conditions, the system applies interleaving selectively to portions of the code sequence that benefit most from it, thereby reducing processing latency while maintaining adequate burst error correction capability for the given transmission scenario.
Data Source
AI summary
Provided is an error correction device including an encoding circuit configured to encode a plurality of error correction code sequences, in which the encoding circuit includes a plurality of encoding circuits connected in parallel, and is configured to execute encoding processing for the plurality of error correction code sequences through use of all the plurality of encoding circuits by adjusting an output bus width and a frequency of an operation clock with respect to a difference in transmission rate for any payloads input in one or more systems.