Antenna Array Signal Weighting for Beamforming Perturbations
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Solution Overview
Problem
Beamforming receiver performance is degraded due to antenna perturbations such as polarity mismatch, near field reflections, and shadowing, leading to random antenna responses and errors in determining incoming communications.
Innovation Solution
A device and method that apply quality metric weights to signal data from individual antennas based on comparisons with reference signal data, enhancing the assessment of total received signals by prioritizing high-quality signals, thereby improving the determination of incoming communications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beamforming receiver uses antenna array processing to provide directivity and mitigate co-channel interference, then spatial filtering performance is improved, but performance is degraded by antenna perturbations such as polarity mismatch, near field reflections, and shadowing
Solution Approach 1:
The patent applies different quality metric weights to signal data from different antennas based on their individual signal qualities. Each antenna's signal is evaluated independently and assigned a weight reflecting its quality, allowing the system to prioritize signals from antennas with better characteristics while downweighting those affected by perturbations.
Solution Approach 2:
The patent dynamically adjusts the combining process by changing the weights applied to each antenna's signal data based on quality metrics. These weights are determined by comparing signal characteristics against reference values and adjusting accordingly, transforming the static beamforming process into an adaptive one that responds to changing antenna conditions.
2Measurement precision
If individual antennas exhibit different perturbations at different times due to temporal and spatial variations, then beamforming combining gain is reduced and errors in determining incoming communications increase
Solution Approach 1:
The patent implements a feedback mechanism where signal data from each antenna is continuously evaluated against reference signal data, and quality metric weights are adjusted based on these comparisons. This feedback loop allows the system to adapt to temporal and spatial variations in antenna performance, maintaining optimal combining gain despite changing conditions.
Solution Approach 2:
The patent transforms the static beamforming weight assignment into a dynamic process where weights are continuously adjusted based on real-time signal quality assessments. This dynamic adaptation allows the system to respond to changing antenna characteristics and maintain optimal performance despite temporal and spatial variations.
Data Source
AI summary
A device and method to determine incoming communications is provided. A device in communication an array of antenna devices determines respective quality metric weights for respective signal data representing respective signals received by the antenna devices. The device applies the respective quality metric weights to the respective signal data to determine total received signal data. The device determines, based on the total received signal data, that the array of the antenna devices has received an incoming communication.