X-Sample Noise Cancellation Circuit for Pre-Equalization DC Removal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Data processing systems face challenges in effectively canceling noise, particularly direct current (DC) noise, which can corrupt digital data and impair equalization performance, leading to miss-equalization and prolonged convergence times in data decoding processes.
Innovation Solution
The implementation of an X sample based noise cancellation circuit that subtracts noise components from digital samples prior to equalization, using an analog to digital converter circuit, a sample based noise cancellation circuit, and an equalizer circuit to yield a noise-corrected output that improves low-frequency equalization and reduces miss-equalization, thereby enhancing overall system performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If noise cancellation is performed after equalization, then the equalizer can process the signal, but DC noise corrupts the data and impairs equalization performance
Solution Approach 1:
The patent applies preliminary noise cancellation to the digital samples before they are fed to the equalizer. By removing the DC noise component in advance (prior to equalization), the equalizer receives cleaner input data, which improves its performance and convergence speed. This resolves the contradiction by ensuring both data accuracy and equalization accuracy are maintained.
2Productivity
If DC noise is present in the signal, then the signal can be transmitted, but data decoding is corrupted and convergence time is prolonged
Solution Approach 1:
The system performs preliminary DC noise cancellation on the digital samples before equalization and decoding. By removing the noise component in advance, the subsequent decoding process converges faster and more accurately, reducing the loss of time without sacrificing transmission productivity.
3Measurement precision
If noise cancellation is applied, then equalization performance improves, but system complexity increases
Solution Approach 1:
The patent extracts only the necessary DC noise component from the digital samples using a dedicated noise cancellation circuit. By taking out only the harmful noise element rather than redesigning the entire equalization system, the solution improves equalization accuracy while adding minimal circuit complexity.
Data Source
AI summary
Systems, methods, devices, circuits for data processing, and more particularly to cancelling noise while processing data.