Optimal pilot length for key generation in correlated wireless channels

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

Comments

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

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

Access Rights

subscription content

Link to Full Text

Share

 
COinS