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- Title
Performance evaluation and security analysis of ground-to-satellite FSO system with CV-QKD protocol.
- Authors
Alshaer, Nancy; Ismail, Tawfik; Nasr, Mohamed E.
- Abstract
This study evaluates the performance of a secure ground-to-satellite free-space optical (FSO) system using a bipolar pulse amplitude modulation over modulated gamma fading channel. A closed-form expression is derived for the joint probability of a satellite-based continuous-variable quantum key distribution (CV-QKD) protocol that uses dual-threshold detection. Furthermore, to study the system behaviour, closed-form expressions for quantum bit-error-rate (QBER) and quantum bit-discard rate (QBDR) are given. The accuracy of the proposed derivations is validated using Monte-Carlo simulations and numerical analysis. The dual-threshold range is optimised to satisfy design criteria in terms of QBER and QBDR. Finally, a sufficient selection of transmitter and receiver parameters ensures a guarantee of system security. Additionally, the information capacity is maximised by a scaling coefficient of $0.3\times 10^{-6}$0.3×10−6.
- Subjects
PULSE amplitude modulation; FREE-space optical technology; NUMERICAL analysis; QUANTUM cryptography
- Publication
IET Communications (Wiley-Blackwell), 2020, Vol 14, Issue 10, p1534
- ISSN
1751-8628
- Publication type
Article
- DOI
10.1049/iet-com.2019.0795