Receiver Front Ends Power Control via Signal Strength
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless communication systems without transceivers face challenges in reducing power consumption since they lack bi-directional communication, making it difficult to implement strategies that reduce transmission power based on signal strength.
Innovation Solution
An integrated circuit chip with receiver front ends and control logic that selectively reduces power consumption by adjusting the number of receiver front ends based on signal strength indications, such as RSSI and SNR, to maintain data integrity while minimizing power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple receiver front ends are used to improve signal reception quality, then data integrity is improved, but power consumption increases
Solution Approach 1:
The system dynamically adjusts the number of active receiver front ends based on received signal strength indication (RSSI). When RSSI indicates strong signal conditions, fewer front ends are activated to reduce power consumption. When RSSI indicates weak signal conditions, more front ends are activated to maintain data integrity and signal quality.
Solution Approach 2:
The system changes operational parameters (number of active receiver front ends) based on signal conditions. The control logic monitors RSSI and adjusts the configuration of the receiver system accordingly, transitioning between different operational states to optimize the balance between power consumption and signal reception quality.
2Measurement precision
If all receiver front ends operate continuously to maintain high signal quality, then SNR is improved, but power consumption increases
Solution Approach 1:
Instead of operating all receiver front ends continuously, the system applies partial action by activating only the necessary number of front ends based on current signal conditions. The control logic determines the minimum number of front ends required to achieve acceptable SNR thresholds, avoiding unnecessary power consumption from excessive operation.
Solution Approach 2:
The system transitions from static operation (all front ends always on) to dynamic operation where the number of active front ends varies with signal conditions. This dynamic adjustment allows the system to maintain adequate SNR only when necessary, reducing overall power consumption.
3Use of energy by moving object
If the number of receiver front ends is reduced to save power, then power consumption decreases, but signal reception quality may deteriorate
Solution Approach 1:
The system implements feedback control by monitoring received signal strength indication (RSSI) and using this information to adjust the number of active receiver front ends. This closed-loop control ensures that power consumption is reduced only when signal conditions permit, maintaining signal reception quality above acceptable thresholds.
Solution Approach 2:
The receiver system serves itself by automatically adjusting its own configuration based on monitored signal conditions. The control logic autonomously determines when to activate or deactivate receiver front ends without external intervention, optimizing the balance between power consumption and signal quality.
Data Source
AI summary
An integrated circuit chip includes an output node, receiver front ends, and control logic. The receiver front ends are configured to receive an input signal. Each of the receiver front ends is configured to receive the input signal and provide an output signal at the output node. At least one of the receiver front ends is configured to selectively consume less power. The control logic is configured to select the number of receiver front ends providing an output signal to the output node based on a received signal strength indication.