Receiver Power Control Based on Channel Quality and Blockers
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Solution Overview
Problem
Conventional communication systems fail to adapt power consumption based on varying signal conditions, leading to inefficient power usage and performance trade-offs, especially when strong undesired signals are present or channel conditions change.
Innovation Solution
A communication receiver system that quantitatively estimates receive signal factors and maps these to performance parameters, adjusting power consumption by using a front-end circuit, signal strength detectors, and a performance control mechanism to optimize RF dynamic range, phase noise, and channel decoder performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the receiver maintains high performance settings continuously, then the reception quality is improved, but the power consumption increases
Solution Approach 1:
The receiver dynamically adjusts its performance parameters (such as signal processing complexity, filtering, equalization) based on real-time channel conditions. When channel quality is good, the receiver reduces processing intensity to save power; when channel quality deteriorates, it increases processing to maintain reception quality, thus resolving the contradiction between continuous high performance and power consumption.
Solution Approach 2:
The system changes operational parameters (processing gain, bandwidth, sampling rate, algorithm complexity) according to channel conditions. By adapting these parameters dynamically, the receiver maintains adequate reception quality while minimizing power consumption in favorable conditions, effectively managing the trade-off between reliability and energy use.
2Use of energy by moving object
If the receiver reduces performance to save power, then the power consumption decreases, but the reception quality deteriorates
Solution Approach 1:
The receiver implements a feedback mechanism that continuously monitors channel quality metrics (signal-to-noise ratio, bit error rate, channel state information) and adjusts performance parameters accordingly. This closed-loop control ensures that power reduction does not push the system below the threshold for acceptable reception quality, resolving the contradiction by adapting performance to the minimum necessary level.
3Object-affected harmful factors
If the receiver increases processing to handle strong undesired signals, then the resistance to blockers is improved, but the power consumption increases
Solution Approach 1:
The receiver applies enhanced signal processing (such as interference cancellation, selective filtering, or increased linearity) specifically when strong undesired signals or blockers are detected in the channel. Instead of maintaining high processing power continuously, the system activates these advanced techniques locally in time and frequency only when needed, thus improving blocker resistance while minimizing overall power consumption.
Data Source
AI summary
A communication receiver which applies signal processing for quantitatively estimating receive signal factors such as communication channel quality, signal characteristics, and overall system received bit error rate (BER) or packet error rate (PER) and which applies a general algorithm for mapping these estimated factors to control receiver performance and minimize power consumption.