Adaptive Optical Transmission System for Variable Link Conditions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In optical transmission systems using passive optical elements, the communication quality is limited by the strictest transmission line condition, as all optical signals share the same fiber, leading to suboptimal communication conditions for each ground, especially when the distance and signal quality vary among connected devices.
Innovation Solution
An optical transmission system that includes a transmission line condition detection unit, a communication condition selection unit, and a communication condition setting unit, allowing each optical transmission and reception apparatus to select an appropriate modulation scheme and baud rate based on detected transmission line conditions, enabling adaptive communication conditions for each ground.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a light splitter is used to enable 1-to-N transmission and reception, then the number of optical fibers required is reduced and construction cost is lowered, but the communication quality is limited by the strictest transmission line condition among all grounds
Solution Approach 1:
The patent applies dynamics by enabling the optical transmission and reception apparatus to dynamically select communication conditions (modulation scheme and baud rate) based on detected transmission line conditions. Each ground can have adaptively adjusted communication parameters, transforming the static shared communication mode into a dynamic, condition-based mode that optimizes performance for each individual ground while maintaining the cost-effective light splitter architecture
Solution Approach 2:
The patent implements local quality by allowing different communication conditions (modulation schemes and baud rates) to be applied to different grounds based on their specific transmission line conditions. Instead of using a uniform communication standard for all grounds, each ground receives customized communication parameters tailored to its distance and signal quality, thereby optimizing overall system performance
2Reliability
If the communication condition is limited to accommodate the farthest ground, then the farthest ground can receive optical signals, but the overall communication capacity of the system is reduced
Solution Approach 1:
The patent applies parameter changes by varying the modulation scheme and baud rate according to the transmission line conditions of each ground. The apparatus detects transmission distance and signal quality, then selects appropriate communication parameters - using higher-order modulation and baud rates for closer grounds with better signal quality, and more robust, lower-rate modes for farther grounds, thereby maximizing communication capacity while ensuring all grounds remain receivable
Data Source
AI summary
There is provided an optical transmission system in which a plurality of optical transmission and reception apparatuses perform 1-to-N transmission and reception of optical signals (N is an integer equal to or greater than 1), the optical transmission system being configured to select a communication condition that includes at least a modulation scheme or a baud rate and is a communication condition when each of the optical transmission and reception apparatuses performs transmission and reception in accordance with a transmission line condition that is between any one first optical transmission and reception apparatus and each of second optical transmission and reception apparatuses, which are N grounds, other than the first optical transmission and reception apparatus.