Reconfigurable DSP in Optical Transceivers
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Solution Overview
Problem
Optical transceivers face challenges in designing a single module that can efficiently operate across various deployment scenarios, such as local area networks, metro, long-haul, and ultra-long-haul environments, due to differing requirements for power dissipation, chromatic dispersion, and polarization mode dispersion, leading to high complexity and costs.
Innovation Solution
The optical transceiver system dynamically adjusts its clock, component parameters, and power consumption to match specific link conditions, using digital signal processing to achieve a predetermined end-to-end bit error rate while minimizing power dissipation, with adaptive equalizer modules and adjustable ADC sampling rates to optimize performance across different scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single ASIC is designed to support all deployment scenarios, then versatility is improved, but device complexity and power dissipation increase
Solution Approach 1:
The ASIC is divided into multiple functional blocks, each handling specific signal processing tasks. This segmentation allows the system to activate only the necessary blocks for each deployment scenario, reducing overall complexity and power consumption while maintaining versatility across different applications.
Solution Approach 2:
The ASIC incorporates dynamic reconfiguration capabilities that allow it to adapt its operational characteristics based on the deployment scenario. This dynamic behavior enables the single device to optimize its complexity and power usage for each specific application environment.
2Adaptability or versatility
If a single ASIC is designed to support all deployment scenarios, then versatility is improved, but power dissipation increases
Solution Approach 1:
The ASIC is divided into multiple functional blocks, each handling specific signal processing tasks. This segmentation allows the system to activate only the necessary blocks for each deployment scenario, reducing overall complexity and power consumption while maintaining versatility across different applications.
Solution Approach 2:
The system dynamically adjusts operational parameters such as clock frequency and processing precision based on the deployment scenario. This parameter adaptation allows the ASIC to reduce power dissipation in scenarios that require lower performance while maintaining the capability to operate at full performance when needed.
3Use of energy by moving object
If multiple ASICs are designed for different deployment scenarios, then power dissipation is optimized for each scenario, but device complexity and development costs increase
Solution Approach 1:
The patent implements a universal ASIC design that can perform multiple functions across different deployment scenarios. This single device replaces the need for multiple specialized ASICs, reducing development complexity and costs while maintaining the ability to optimize power dissipation for each specific application through dynamic reconfiguration.
Solution Approach 2:
The ASIC incorporates dynamic reconfiguration capabilities that allow it to adapt its operational characteristics based on the deployment scenario. This dynamic behavior enables the single device to optimize its complexity and power usage for each specific application environment.
4Use of energy by moving object
If multiple ASICs are designed for different deployment scenarios, then power dissipation is optimized for each scenario, but development costs increase
Solution Approach 1:
The patent implements a universal ASIC design that can perform multiple functions across different deployment scenarios. This single device replaces the need for multiple specialized ASICs, reducing development complexity and costs while maintaining the ability to optimize power dissipation for each specific application through dynamic reconfiguration.
Data Source
AI summary
A method for setting transceiver transmission parameters, in a transceiver having a plurality of components, to achieve the predetermined acceptable end-to-end bit error rate while reducing power consumption. In another aspect the invention relates to an optical transceiver system that uses digital signal processing to process the data stream sent through a fiber optical channel to compensate for transmission, reception and channel impairments to achieve the a predetermined end-to-end bit error rate and to alter its power dissipation to that sufficient to meet said end-to-end bit error rate. In one embodiment the optical transceiver system includes an optical transmitter; an optical receiver comprising an ASIC, FPGA, or other circuitry; and a controller in electrical communication with the optical receiver, wherein the controller controls power to portions of the ASIC so as to reduce power dissipation while meeting the end-to-end bit error rate.