מושגי ליבה
The authors propose a novel transmissive reconfigurable intelligent surface (TRIS) transmitter-enabled spatial modulation (SM) multiple-input multiple-output (MIMO) system, which activates specific column elements of the TRIS panel per time slot. The receiver employs maximum likelihood detection to retrieve the transmitted signals. The authors derive closed-form expressions for the upper bounds of the average bit error probability (ABEP) using both vector-based and element-based approaches. They also provide asymptotic ABEP expressions and diversity gain analysis. To improve the performance, the authors optimize the ABEP with a fixed data rate constraint and propose a simplified improved TRIS-SM scheme to reduce computational complexity.
תקציר
The paper proposes a novel TRIS transmitter-enabled spatial modulation (SM) MIMO system. Key highlights:
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The TRIS transmitter activates specific column elements per time slot, while the receiver uses maximum likelihood detection.
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The authors derive closed-form expressions for the upper bounds of the average bit error probability (ABEP) using both vector-based and element-based approaches.
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Asymptotic ABEP expressions and diversity gain analysis are provided.
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To improve performance, the authors optimize the ABEP with a fixed data rate constraint.
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A simplified improved TRIS-SM scheme is proposed to reduce computational complexity.
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Simulation results validate the theoretical derivations and show the proposed TRIS-SM scheme outperforms conventional SM, while the improved TRIS-SM scheme further improves reliability.
סטטיסטיקה
The authors provide the following key metrics and figures:
"The Monte Carlo simulation method is used to validate the theoretical derivations exhaustively."
"The results demonstrate that the proposed TRIS-SM scheme can achieve better ABEP performance compared to the conventional SM scheme. Furthermore, the improved TRIS-SM scheme outperforms the TRIS-SM scheme in terms of reliability."