On the Transmission Probabilities in Quantum Key Distribution Systems over FSO Links
Type
ArticleAuthors
Zhao, HuiAlouini, Mohamed-Slim

KAUST Department
Communication Theory LabComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering
Electrical Engineering Program
Date
2020-10-12Online Publication Date
2020-10-12Print Publication Date
2021-01Permanent link to this record
http://hdl.handle.net/10754/656067
Metadata
Show full item recordAbstract
In this paper, we investigate the transmission probabilities in three cases (depending only on the legitimate receiver, depending only the eavesdropper, and depending on both legitimate receiver and eavesdropper) in quantum key distribution (QKD) systems over free-space optical links. To be more realistic, we consider a generalized pointing error scenario, where the azimuth and elevation pointing error angles caused by stochastic jitters and vibrations in the legitimate receiver platform are independently distributed according to a non-identical normal distribution. Taking these assumptions into account, we derive approximate expressions of transmission probabilities by using the Gaussian quadrature method. To simplify the expressions and get some physical insights, some asymptotic analysis on the transmission probabilities is presented based on asymptotic expression for the generalized Marcum Q-function when the telescope gain at the legitimate receiver approaches to infinity. Moreover, from the asymptotic expression for the generalized Marcum Q-function, the asymptotic outage probability over Beckmann fading channels (a general channel model including Rayleigh, Rice, and Hoyt fading channels) can be also easily derived when the average signal-to-noise ratio is sufficiently large, which shows the diversity order and array gain.Citation
Zhao, H., & Alouini, M.-S. (2020). On the Transmission Probabilities in Quantum Key Distribution Systems over FSO Links. IEEE Transactions on Communications, 1–1. doi:10.1109/tcomm.2020.3030250Sponsors
This work was funded by the office of sponsored research (OSR) at KAUST. The work of H. Zhao was done while he was studying at KAUST.Additional Links
https://ieeexplore.ieee.org/document/9220903/https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9220903
ae974a485f413a2113503eed53cd6c53
10.1109/TCOMM.2020.3030250