Secrecy performance of a keyhole-based multi-user system with multiple eavesdroppers

Alam, Parwez; Dubey, Ankit; Moualeu, Jules M.; Ngatched, Telex M. N.; Kundu, Chinmoy

Secrecy performance of a keyhole-based multi-user system with multiple eavesdroppers

Files

Y24_PA_P3_PINHOLE_DNL_ME_V7_CAM.pdf(430.57 KB)

Accepted Version

Date

2025-09-30

Authors

Alam, Parwez

Dubey, Ankit

Moualeu, Jules M.

Ngatched, Telex M. N.

Kundu, Chinmoy

Publisher

Institute of Electrical and Electronics Engineers (IEEE)

Published Version

10.1109/vtc2025-spring65109.2025.11174874

Abstract

This paper investigates the secrecy performance of a keyhole-aided multi-user communication network in the presence of multiple eavesdroppers. The communication happens through the same keyhole for legitimate users and eavesdroppers. In this context, the secrecy performance is evaluated for a user scheduling technique by obtaining the exact closed-form expression of secrecy outage probability (SOP). Further, a simplified asymptotic SOP expression is derived assuming high signal-to-noise ratio (SNR) scenario for a better understanding of the impact of system parameters. The effect of the keyhole parameters, number of users, number of eavesdroppers, and threshold secrecy rate on the SOP performance are also investigated for the considered system model. In the high-SNR regime, the asymptotic SOP saturates to a constant value and does not depend on the keyhole parameter and the channel parameter of the source-to-keyhole channel.

Keywords

Asymptotic analysis , Keyhole , Physical layer security , Secrecy outage probability

Citation

Alam, P., Dubey, A., Moualeu, J. M., Ngatched, T. M. N. and Kundu, C. (2025) 'Secrecy performance of a keyhole-based multi-user system with multiple eavesdroppers', 2025 IEEE 101st Vehicular Technology Conference (VTC2025-Spring), Oslo, Norway, 17-20 June 2025, pp. 1-5. https://doi.org/10.1109/VTC2025-Spring65109.2025.11174874