Smart Antenna Mode Selection via Time Reversal Algorithm
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Solution Overview
Problem
Designing a standard process for controlling smart antennas to automatically select the best mode for wireless communication has become a critical challenge, especially in varying indoor environments where communication devices with smart antennas need to adapt quickly to changes in channel conditions.
Innovation Solution
A detection device equipped with a smart antenna capable of switching between multiple modes, which transmits test data, receives feedback, applies a time reversal algorithm to the feedback data to obtain a time reversal datum, calculates indicators based on the feedback and time reversal data, and compares these indicators to select the optimal antenna mode for communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a smart antenna switches between multiple modes to adapt to varying indoor environments, then the adaptability and detection accuracy are improved, but the device complexity and control difficulty increase
Solution Approach 1:
The patent implements a feedback mechanism where the system transmits test data through the smart antenna in different modes, receives feedback data, performs time reversal operations, calculates indicators, and uses these indicators to automatically select the optimal antenna mode. This closed-loop feedback process enables the system to adapt to varying indoor environments automatically, resolving the contradiction between adaptability and control complexity.
Solution Approach 2:
The system performs self-evaluation by calculating indicators based on feedback data and time reversal operations, then automatically selects the best antenna mode without external intervention. This self-service capability allows the smart antenna to autonomously adapt to environmental changes, improving versatility while maintaining manageable system complexity.
2Measurement precision
If the system transmits test data and performs time reversal algorithms in multiple antenna modes, then the detection accuracy and identification rate are improved, but the time consumption and processing complexity increase
Solution Approach 1:
The system performs preliminary testing by transmitting test data through the smart antenna in different modes before actual communication begins. The time reversal algorithm and indicator calculation are performed in advance to determine the optimal mode, so that when communication starts, the system is already configured for maximum detection accuracy without time loss during operation.
Solution Approach 2:
The system performs time reversal operations and indicator calculations for all antenna modes to ensure optimal selection, even though only one mode will ultimately be selected. This excessive action guarantees detection accuracy by thoroughly evaluating all options, accepting the additional processing time as necessary for achieving the highest identification rate.
Data Source
AI summary
A detection device for communicating with an external device includes a smart antenna, a storage device, and a processor. The smart antenna is capable of switching between a plurality of antenna modes. In each of the antenna modes, the smart antenna transmits a test datum and receives a feedback datum according to the test datum, the processor performs a time reversal algorithm to the feedback datum so as to obtain a time reversal datum, the processor calculates an indicator according to the feedback datum and the time reversal datum, and the storage device stores the feedback datum, the time reversal datum, and the indicator. The processor compares all of the indicators with each other and controls the smart antenna to select the final mode of the antenna modes according to a comparison between all of the indicators.