Document Type
Journal Article
Publication Title
IEEE Wireless Communications Letters
Volume
13
Issue
10
First Page
2767
Last Page
2771
Publisher
IEEE
School
School of Science
Abstract
This work examines the optimal pilot length for key generation in correlated wireless channels. We first deduce the secret key capacity as a function of the pilot length N and other system parameters. Then, derive two fixed-point equations to identify the optimal N with and without an eavesdropper. Our analysis and numerical results confirm the existence of the optimal N that maximizes the secret key capacity, and both results for optimal N are consistent. Furthermore, the optimal N generally decreases with average signal-to-noise ratio and maximum Doppler shift. Our examination can provide useful guidelines in designing practical key generation systems.
DOI
10.1109/LWC.2024.3444821
Creative Commons License
This work is licensed under a Creative Commons Attribution-No Derivative Works 4.0 License.
Comments
This is an an Author's Accepted Manuscript of an article published by IEEE. © 2024 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Li, D., Yan, S., Zhang, J., Sun, J., & Shu, F. (2024). Optimal pilot length for key generation in correlated wireless channels. IEEE Wireless Communications Letters, 13(10), 2767-2771. https://doi.org/10.1109/LWC.2024.3444821