Adaptive Signal Converter Sampling for Low-Power Wireless Reception
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Solution Overview
Problem
Communications devices with signal converters configured for high-power wireless signals consume excessive power when processing lower power signals due to fixed sampling ranges and resolutions, leading to inefficient energy use and potential loss of information signal detection.
Innovation Solution
The signal converter adapts its sampling range while maintaining a sampling resolution step size at or below a threshold, enabling efficient power consumption by enabling/disabling comparators or adjusting approximation cycles based on interference metrics, thereby optimizing bit-width and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a signal converter uses a fixed sampling range configured for high-power wireless signals, then it can process high-power signals effectively, but it consumes excessive power when processing lower power signals
Solution Approach 1:
The signal converter dynamically adapts its sampling range based on the detected signal power level. When high-power signals are detected, the converter uses a first sampling range with higher power consumption; when lower power signals are detected, it switches to a second sampling range with reduced power consumption. This dynamic adjustment resolves the contradiction by making the system flexible rather than fixed.
Solution Approach 2:
The patent changes the sampling range parameter of the signal converter based on signal conditions. By monitoring signal power and adjusting the sampling range parameter accordingly, the system optimizes power consumption while maintaining reliable signal processing. The sampling range is changed between at least two different ranges depending on whether high-power or lower power signals are present.
2Measurement precision
If a signal converter maintains high sampling resolution to detect information signals, then detection accuracy is improved, but power consumption increases
Solution Approach 1:
The signal converter applies partial action by using high sampling resolution only when necessary for detecting information signals in lower power signals. When high-power signals are present, the converter uses reduced sampling resolution, thereby consuming less power while still maintaining adequate detection capability. This partial application of high resolution resolves the contradiction between precision and power consumption.
Data Source
AI summary
A first analog signal may be sampled during a first time period in accordance with a first sampling range and a sampling resolution step size, where a first digital sequence may be outputted during the first time period based on sampling the first analog signal.