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Enhancing design and performance analysis of satellite EB/CV-QKD/FSO systems
Nguyen, T.V. Le, H.T. Pham, H.T.T. Mai, Vuong Dang, N.T.
Nguyen, T.V.
Le, H.T.
Pham, H.T.T.
Mai, Vuong
Dang, N.T.
Publication Date
2023-10
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2023 The Authors. This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.
For more information, see https://creativecommons.org/licenses/by-nc-nd/4.0/
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openAccess
Accepted for publication
2023-10-02
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Abstract
Satellite QKD/FSO systems, which facilitate quantum key distribution (QKD) over free-space optical (FSO) links between satellites and ground stations, present a promising pathway toward achieving global security in upcoming sixth-generation (6G) wireless communications. Our study focuses on a superior type of these systems, the satellite EB/CV-QKD/FSO, which utilizes the continuous-variable (CV) method for quantum state representation and the entanglement-based (EB) scheme for QKD implementation. We propose the use of optical phase-shift keying (QPSK) signaling and dual-threshold/heterodyne detection (DT/HD) receivers to bolster the reliability and feasibility of satellite EB/CV-QKD/FSO systems. Closed-form expressions for key system performance metrics are derived using improved channel modeling. Numerical results are presented to showcase the effects of channel impairments on the system performance. We also provide recommendations for optimal system setup parameters, aiming to enhance performance.
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Citation
Nguyen TV, Le HT, Pham HTT et al (2023) Enhancing design and performance analysis of satellite EB/CV-QKD/FSO systems. IEEE Access. 11: 112097-112107.
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Article