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Dynamic Spectrum Access for Ambient Backscatter Communication-assisted D2D Systems with Quantum Reinforcement Learning
Created by
Haebom
Author
Nguyen Van Huynh, Bolun Zhang, Dinh-Hieu Tran, Dinh Thai Hoang, Diep N. Nguyen, Gan Zheng, Dusit Niyato, Quoc-Viet Pham
Outline
This paper proposes a backscattering communication technique that utilizes ambient RF signals to address spectrum access issues in Device-to-Device (D2D) communications. We aim to improve spectral efficiency by enabling D2D devices to transmit data via backscattering when the shared spectrum is occupied. To find the optimal spectrum access policy (standby, active transmission, or backscattering), we propose a quantum reinforcement learning (QRL) algorithm. To achieve faster convergence with fewer parameters than conventional deep reinforcement learning (DRL), we approximate the optimal policy using parameterized quantum circuits. Simulation results demonstrate that the proposed QRL-based approach improves the average throughput of D2D devices and significantly outperforms the DRL-based approach in terms of convergence speed and learning complexity.
Takeaways, Limitations
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Takeaways:
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A novel method to effectively solve the spectrum access problem in D2D communications by utilizing quantum reinforcement learning is presented.
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Achieves faster convergence speed and improved learning efficiency than existing DRL-based methods.
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Demonstrates the effectiveness of backscattering communication technology, which utilizes RF signals from the surrounding environment to increase spectral efficiency.
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Significantly improve the average throughput of D2D communication.
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Limitations:
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Further research is needed to determine the applicability and stability of the proposed algorithm in real environments.
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The accessibility and cost of quantum computing resources must be considered.
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Robustness assessment is required for various channel conditions and network environments.
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Lack of actual hardware implementation and experimental verification.