Configurable Signal Interpolation and Decimation for Multi-Mode ADSL
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Solution Overview
Problem
Existing ADSL signal processing methods require a large chip area and high power dissipation due to the need for separate interpolation or decimation paths for each transmission mode, making them expensive and inefficient.
Innovation Solution
A method and device that use a single interpolation or decimation path with adaptable signal processing means, including clock rate adjustment and filtering, to accommodate multiple ADSL standards, by bypassing or adjusting filtering and clock rate increasing/reducing means based on the transmission mode, allowing for efficient processing across various ADSL standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate interpolation or decimation paths are provided for each ADSL transmission mode, then the device can process multiple transmission modes, but the chip area increases and power dissipation increases
Solution Approach 1:
The patent implements a universal signal processing path that can handle multiple ADSL transmission modes (ADSL, ADSL+, ADSL2, ADSL2+, etc.) through a single configurable architecture. The filtering means and clock rate adjustment means are designed to be reconfigurable, allowing the same hardware to adapt to different transmission modes without requiring separate dedicated paths for each mode, thereby reducing chip area while maintaining multi-mode processing capability
Solution Approach 2:
The patent employs dynamic reconfiguration of the signal processing path by selectively bypassing or activating specific filtering means and adjusting clock rate multiplication factors based on the detected transmission mode. This dynamic adaptation allows the system to optimize its operation for each mode using a single flexible path rather than static dedicated paths, reducing overall chip area while maintaining versatility
2Adaptability or versatility
If separate interpolation or decimation paths are provided for each ADSL transmission mode, then the device can process multiple transmission modes, but power dissipation increases
Solution Approach 1:
The patent implements a universal signal processing path that can handle multiple ADSL transmission modes (ADSL, ADSL+, ADSL2, ADSL2+, etc.) through a single configurable architecture. The filtering means and clock rate adjustment means are designed to be reconfigurable, allowing the same hardware to adapt to different transmission modes without requiring separate dedicated paths for each mode, thereby reducing chip area while maintaining multi-mode processing capability
Solution Approach 2:
The patent employs dynamic reconfiguration of the signal processing path by selectively bypassing or activating specific filtering means and adjusting clock rate multiplication factors based on the detected transmission mode. This dynamic adaptation allows the system to optimize its operation for each mode using a single flexible path rather than static dedicated paths, reducing overall chip area while maintaining versatility
3Productivity
If the clock rate is increased by a fixed factor, then the data rate is improved, but the adaptability to different transmission modes is reduced
Solution Approach 1:
The patent employs dynamic reconfiguration of the signal processing path by selectively bypassing or activating specific filtering means and adjusting clock rate multiplication factors based on the detected transmission mode. This dynamic adaptation allows the system to optimize its operation for each mode using a single flexible path rather than static dedicated paths, reducing overall chip area while maintaining versatility
Solution Approach 2:
The patent changes the clock rate multiplication factor as a variable parameter depending on the transmission mode being processed. Different multiplication factors are applied for different ADSL standards (e.g., different factors for ADSL vs. ADSL2+), allowing the system to optimize data rate for each mode while maintaining adaptability across multiple standards through a single configurable path
4Stability of the object's composition
If filtering parameters are fixed, then the filtering performance is stable, but the adaptability to different transmission modes is reduced
Solution Approach 1:
The patent employs dynamic reconfiguration of the signal processing path by selectively bypassing or activating specific filtering means and adjusting clock rate multiplication factors based on the detected transmission mode. This dynamic adaptation allows the system to optimize its operation for each mode using a single flexible path rather than static dedicated paths, reducing overall chip area while maintaining versatility
Solution Approach 2:
The patent changes the clock rate multiplication factor as a variable parameter depending on the transmission mode being processed. Different multiplication factors are applied for different ADSL standards (e.g., different factors for ADSL vs. ADSL2+), allowing the system to optimize data rate for each mode while maintaining adaptability across multiple standards through a single configurable path
Data Source
AI summary
A method and a device for interpolating or decimating a signal is provided, the signal being processed by a plurality of signal processing means connected in series, which at least comprise means for increasing or reducing a clock rate of the signal and filtering means. To achieve adaptation to different operating modes or transmission standards, individual portions of the signal processing means connected in series can be bridged by bypasses. In addition, filtering parameters of the filtering means can be varied and factors, by which a clock rate of the signal is increased or reduced, can be changed.