Scalar Minimax Filter-based Phase Tracking for Continuous-Variable Quantum Key Distribution

Farah Al-sallami, Sujan Rajbhandari, Zahir Ahmad, David Grace

Research output: Chapter in Book/Report/Conference proceedingConference proceedingpeer-review

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Abstract

In local oscillator (LLO)-based continuous-variable quantum key distribution (CV-QKD), a difference between the linewidth values of two free-running lasers at Alice and Bob induces a phase drift noise. This work proposes a novel minimax filter-based phase tracking that aims to minimize the phase drift considering maximum residual phase error to achieve optimal phase estimation. Simulation results show that the minimax filter offers a lower phase estimation mean square error (MSE) value compared to the Kalman filter when worst-case phase drift error due to high linewidth difference or high measurement noise values are considered.
Original languageEnglish
Title of host publication 2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP)
PublisherIEEE
Pages499-502
Number of pages4
ISBN (Electronic)978-1-6654-1044-1
DOIs
Publication statusPublished - 6 Oct 2022
Event2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing - Porto, Portugal
Duration: 20 Jul 202222 Jul 2022
Conference number: 13th
https://csndsp2022.av.it.pt/

Publication series

Name2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing, CSNDSP 2022

Conference

Conference2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing
Abbreviated titleCSNDSP
Country/TerritoryPortugal
CityPorto
Period20/07/2222/07/22
Internet address

Bibliographical note

Publisher Copyright:
© 2022 IEEE.

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