Optical Receiver Sampling Rate Adaptation
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Solution Overview
Problem
Conventional optical receivers face inefficiencies due to fixed sampling rates, leading to high power consumption and processing demands, as they cannot adapt sampling rates to match varying processing needs, resulting in suboptimal performance and increased energy usage.
Innovation Solution
An apparatus and method for an optical receiver that allows for sampling rate adaptation by re-sampling digitized optical signals using different filter coefficients, enabling flexible sampling rates and adaptive filtering to optimize processing capacities and reduce power consumption, while maintaining signal quality through adaptive update algorithms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a high sampling rate is used in optical receivers, then signal processing quality is improved, but power consumption and processing demands increase
Solution Approach 1:
The patent implements dynamic sampling rate adaptation where the sampling rate is adjusted based on signal conditions and processing requirements. The receiver can switch between different sampling rates (e.g., 2 samples per symbol, 1 sample per symbol, or fractional rates) to optimize the balance between signal processing quality and power consumption, rather than operating at a fixed high sampling rate
Solution Approach 2:
The patent changes the sampling rate parameter adaptively based on system conditions. By modifying this key parameter, the system can achieve high signal processing quality when needed while reducing power consumption during normal operation, directly resolving the contradiction between processing quality and energy usage
2Measurement precision
If a high sampling rate is used in optical receivers, then signal processing quality is improved, but processing capacities increase
Solution Approach 1:
The system dynamically adjusts the sampling rate based on actual processing needs and signal conditions. When high processing capacity is available, higher sampling rates can be used for improved quality. When processing capacity is constrained, the system adapts to lower sampling rates, maintaining quality where possible while respecting processing capacity limits
Solution Approach 2:
The sampling rate parameter is changed adaptively to match processing capacity availability. This allows the system to optimize signal processing quality within the constraints of available processing capacity, rather than being limited by a fixed high sampling rate requirement
3Device complexity
If a fixed sampling rate is used in optical receivers, then system simplicity is maintained, but adaptability to processing demands decreases
Solution Approach 1:
The patent introduces dynamic sampling rate adjustment capability while maintaining relatively simple system architecture. The adaptability is achieved through controlled complexity - the system can switch between predefined sampling rates based on conditions, providing adaptability without requiring overly complex continuous adjustment mechanisms
Solution Approach 2:
The sampling rate adaptation mechanism serves multiple functions: it optimizes power consumption, adapts to processing capacity variations, and maintains signal processing quality across different operating conditions. This multi-functional approach justifies the added complexity by delivering broad system benefits
Data Source
AI summary
A technique is provided for a receiver of an optical signal. The technique includes an apparatus that is configured to input digitized samples of the optical signal at a first sampling rate. The apparatus is further configured to filter the digitized samples based on a plurality of filter coefficients to obtain filtered samples of the optical signal at a second sampling rate. The second sampling rate is different from the first sampling rate. The apparatus is further configured to output the filtered samples of the optical signal at the second sampling rate.