Segmented Digital Signal Processing Circuits for Optical Communications
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Solution Overview
Problem
The development of digital signal processing circuits for optical communications that cater to diverse user requests, such as quality, capacity, and transmission distance, leads to increased circuit complexity and power consumption, making it difficult to design and manufacture while also increasing development time and costs.
Innovation Solution
A signal processing device comprising multiple digital signal processing circuits, each equipped with regeneration, error correction, and encoding capabilities, allowing for the sharing and processing of electric field information signals and bit streams between circuits to achieve efficient error correction and signal regeneration, thereby reducing the burden on individual circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a digital signal processing circuit is developed to provide all functions requested in a communication system, then all user requests can be satisfied, but the circuit scale increases and manufacturing yield deteriorates
Solution Approach 1:
The patent divides the digital signal processing functions into separate independent circuits, each dedicated to specific functions (error correction, dispersion compensation, non-linear compensation). This segmentation allows each circuit to be smaller and easier to manufacture with higher yield, while the system as a whole provides comprehensive functionality through multiple specialized circuits working together.
2Adaptability or versatility
If a digital signal processing circuit is developed to provide all functions requested in a communication system, then all user requests can be satisfied, but the circuit scale increases and design difficulty increases
Solution Approach 1:
The patent segments the complex digital signal processing system into multiple independent circuits with specific functions. Each circuit handles a particular aspect (error correction, dispersion compensation, etc.), making individual circuit design simpler and more manageable while maintaining comprehensive system functionality.
Solution Approach 2:
The patent creates universal interface structures that allow different specialized circuits to work together through standardized signal exchanges (electric field information signals and bit streams). This universal interface approach simplifies the integration of multiple circuits and reduces overall system design complexity.
3Adaptability or versatility
If a digital signal processing circuit is developed to provide all functions requested in a communication system, then all user requests can be satisfied, but the power consumption increases
Solution Approach 1:
The patent divides the power-consuming digital signal processing functions into separate circuits that can be independently activated. This allows the system to consume power only for the specific functions that are currently needed, rather than continuously powering all functions, thereby reducing overall power consumption while maintaining full functional capability when required.
4Manufacturing precision
If separate digital signal processing circuits are developed for each requested function, then development time and cost may increase, but the circuit scale and manufacturing yield are improved
Solution Approach 1:
The patent employs universal interface structures and standardized signal formats (electric field information signals and bit streams) that enable different specialized circuits to be developed independently yet integrated seamlessly. This modular universal approach allows parallel development of multiple circuits, reducing total development time compared to developing one large complex circuit, while maintaining high manufacturing yield through smaller specialized circuits.
5Manufacturing precision
If separate digital signal processing circuits are developed for each requested function, then development cost may increase, but the circuit scale and manufacturing yield are improved
Solution Approach 1:
The patent segments the system into smaller specialized circuits that can be manufactured with higher yield and lower individual cost. Although multiple circuits are needed, the reduced complexity and higher manufacturing yield of each small circuit result in lower overall production costs compared to manufacturing a single large complex circuit with lower yield.
Solution Approach 2:
The patent uses universal interface standards and modular architectures that allow specialized circuits to be developed and manufactured independently using standardized processes. This modularity enables economies of scale in manufacturing each circuit type and simplifies assembly, reducing total development and manufacturing costs despite the use of multiple circuits.
Data Source
AI summary
A signal processing device includes digital signal processing circuits. Each of the digital signal processing circuits includes: a regeneration circuit that regenerates a bit stream front an electric field information signal of an optical signal; an error correction circuit that corrects an error in the bit stream; an encoder circuit that generates an encoded bit stream from received data; and a generation circuit that generates an electric field information signal from the encoded bit stream. An electric field information signal or a bit stream is given from a regeneration circuit, an encoder circuit or a generation circuit in a first digital signal processing circuit to a second digital signal processing circuit. A regeneration circuit, an error correction circuit or a generation circuit in the second digital signal processing circuit processes the electric field information signal or the bit stream given from the first digital signal processing circuit.