Wireless Apparatus Dynamic Threshold Switching STBC Non-STBC
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently switching between STBC and non-STBC transmission schemes based on reception field strengths and SNR, making it difficult to determine the optimal scheme for high-speed transmission.
Innovation Solution
A wireless communication apparatus that selectively switches between STBC and non-STBC schemes using a detection unit for reception quality, a changeover unit for scheme switching, and a control unit to adjust threshold values based on reception quality fluctuations, allowing for both reliable and high-speed transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If STBC transmission scheme is used, then transmission reliability is improved, but transmission rate deteriorates
Solution Approach 1:
The patent dynamically switches between STBC and non-STBC transmission schemes based on detected reception quality. The transmission scheme is not fixed but adapts in real-time to channel conditions, allowing the system to optimize between reliability and transmission rate depending on current propagation characteristics.
Solution Approach 2:
The patent changes the transmission scheme parameter based on reception quality detection. When reception quality is good, it switches to non-STBC for higher rate; when reception quality deteriorates, it switches to STBC for better reliability. This parameter adaptation resolves the contradiction by selecting the appropriate transmission mode.
2Productivity
If non-STBC transmission scheme is used, then transmission rate is improved, but transmission reliability deteriorates
Solution Approach 1:
The system dynamically adjusts the transmission scheme based on real-time reception quality detection. When channel conditions are favorable, it employs non-STBC for maximum transmission rate; when conditions worsen, it transitions to STBC to maintain reliability, thus dynamically balancing rate and reliability.
Solution Approach 2:
The transmission scheme parameter is changed based on detected reception quality. The system monitors channel conditions and switches between non-STBC and STBC modes, adapting the transmission parameters to current propagation characteristics to optimize the balance between rate and reliability.
3Ease of operation
If fixed threshold value is used for scheme changeover, then control simplicity is improved, but adaptability to reception quality fluctuation deteriorates
Solution Approach 1:
The patent makes the threshold value dynamic rather than fixed. The threshold adapts based on detected reception quality fluctuations, allowing the system to adjust its decision criteria according to current channel conditions. This dynamic thresholding maintains control simplicity while significantly improving adaptability to varying reception quality.
Solution Approach 2:
The system uses feedback from reception quality detection to adjust the threshold value for scheme changeover. By continuously monitoring reception quality and adapting the threshold accordingly, the system achieves both simple control logic and high adaptability to changing channel conditions.
Data Source
AI summary
A wireless communication apparatus for performing wireless communication by selectively switching among a plurality of transmission schemes having different transmission performance capabilities is provided. A detection unit detects reception quality of a signal, and a changeover unit changes over the transmission scheme in accordance with the reception quality detected. A control unit performs control for changing a threshold value, which is for changing over the transmission scheme, in accordance with a fluctuation in the reception quality.