Bit Stream Distribution Circuit for Variable-Speed Optical Subcarriers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional optical communication systems are unable to change the transmission speed of data carried by each subcarrier, limiting flexibility and efficiency in data transmission.
Innovation Solution
An information bit stream conversion circuit that separates transmission data into multiple streams with different speeds by extracting and distributing data at varying rates using dedicated hardware or software/firmware, allowing for flexible transmission speeds on each subcarrier.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a distribution matching circuit is applied to perform probabilistic shaping of signal point arrangement, then the signal point arrangement can be optimized using different probability distributions, but the transmission speed of transmission data on each subcarrier cannot be changed
Solution Approach 1:
The invention divides the transmission data into multiple information bit streams, with each stream assigned to a different subcarrier. By segmenting the data flow and applying independent distribution matching circuits to each stream, the system enables different probability distributions and transmission speeds for each subcarrier, resolving the contradiction between adaptability and speed flexibility.
Solution Approach 2:
The invention introduces dynamic control by allowing the transmission speed and probability distribution to be independently adjusted for each subcarrier. This dynamic configuration enables the system to adapt transmission parameters in real-time based on channel conditions and requirements, while maintaining the ability to change transmission speeds without compromising the probabilistic shaping capability.
2Productivity
If the transmission speed is fixed for each subcarrier, then the system structure remains simple, but the flexibility and efficiency in data transmission are limited
Solution Approach 1:
The invention designs a universal information bit stream distribution device that can handle multiple subcarriers with different transmission speeds and probability distributions using a unified architectural framework. This multi-functional design enables the system to achieve high transmission efficiency and flexibility across different subcarriers while avoiding the need for completely separate processing chains for each subcarrier, thus controlling overall system complexity.
Data Source
Figure 1~3
Figure 4~5
Figure 6
AI summary
An information bit stream distribution device (1) includes: a first bit stream output unit (11) that acquires an information bit stream having a valid bit stream including transmission data and an invalid bit stream including dummy data, extracts, from the transmission data included in the valid bit stream of the information bit stream, some pieces of transmission data as first transmission data, and outputs an information bit stream having a valid bit stream including the first transmission data and an invalid bit stream including dummy data as a first information bit stream in which the first transmission data is transmitted at a first speed; and a second bit stream output unit (12) that extracts, from the transmission data included in the valid bit stream of the information bit stream acquired by the first bit stream output unit (11), transmission data other than the first transmission data as second transmission data, and outputs an information bit stream having a valid bit stream including the second transmission data and an invalid bit stream including dummy data as a second information bit stream in which the second transmission data is transmitted at a second speed.