Antenna Selection Using Individual Noise Thresholds
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Solution Overview
Problem
Diversity antenna systems in small electronic devices face inefficiencies due to uniform antenna selection criteria, leading to suboptimal antenna selection and reduced signal-to-noise ratio, resulting in lower data throughput and increased retransmissions, especially in environments with noise and interference.
Innovation Solution
A method and apparatus that determine separate threshold values for each antenna based on their unique noise and interference levels, allowing for dynamic antenna selection during signal reception, prioritizing the antenna with the highest signal-to-noise ratio for improved data payload reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If uniform antenna selection criteria (equal weighting or common signal threshold) is used, then the antenna selection process is simple, but the signal-to-noise ratio deteriorates and data throughput decreases
Solution Approach 1:
The patent applies local quality by assigning individual threshold values to each antenna based on their specific noise and interference characteristics. Instead of using a uniform threshold for all antennas, the system determines separate threshold values that reflect the local conditions of each antenna, thereby optimizing signal-to-noise ratio for each antenna's specific environment.
Solution Approach 2:
The patent changes the parameter of the selection threshold from a uniform common value to antenna-specific individual values. By determining separate threshold values for each antenna based on their unique noise levels and interference characteristics, the system adapts the selection criteria to match the actual conditions of each antenna, improving overall system reliability.
2Volume of moving object
If antennas are placed in close proximity to reduce device size, then device compactness is improved, but noise and interference increase
Solution Approach 1:
The patent addresses the harmful effects of close antenna placement by determining individual threshold values for each antenna based on their specific noise and interference environments. This allows the system to compensate for the increased interference caused by proximity, maintaining optimal performance despite the compact form factor.
Solution Approach 2:
The patent converts the harmful effect of increased noise and interference from close antenna placement into a beneficial selection criterion. By using the measured noise and interference levels to determine individual threshold values, the system transforms the previously harmful proximity effect into a basis for optimized antenna selection, improving signal-to-noise ratio.
3Ease of operation
If equal weighting algorithm is used for antenna selection, then selection criteria is uniform and simple, but data throughput decreases due to suboptimal antenna selection
Solution Approach 1:
The patent changes the selection parameter from equal weighting to individual threshold values based on each antenna's performance characteristics. This parameter change allows the system to select the optimal antenna for each transmission, improving data throughput while maintaining relatively simple operation through automated threshold determination.
Solution Approach 2:
The patent implements feedback by determining individual threshold values for each antenna based on their measured noise and interference levels. This feedback mechanism allows the system to continuously optimize antenna selection based on actual operating conditions, improving data throughput without requiring complex manual configuration.
Data Source
AI summary
A method and apparatus for diversity antenna selection and include receiving a first portion of a signal using a first antenna during a first time period and using a second antenna during a second time period, determining a first difference value for the first portion received by the first antenna, the first value being a difference between a signal level for the first portion received by the first antenna and a threshold signal level associated with the first antenna, and determining a second difference value for the first portion received by the second antenna, the second value being a difference between a signal level for the first portion received by the second antenna and a threshold signal level associated with the second antenna. The method and apparatus include receiving a second portion of the signal using the first antenna if the first difference value is greater than the second difference value.