A sensing-based two-phase secure ISAC framework
Author Identifier (ORCID)
Shihao Yan: https://orcid.org/0000-0002-4586-1926
Abstract
This paper develops a two-phase secure integrated sensing and communication (ISAC) framework, where a dual-functional transmitter (Alice) detects the existence of a potential eavesdropper (Eve) as a sensing target in the first phase. In the second phase, Alice adapts her secure transmission strategy based on the sensing outcome of the first phase. A distinct aspect of our proposed two-phase framework is the derivation of the overall effective secrecy rate across both phases. This is achieved by seamlessly incorporating the a priori probability of Eve's presence, the sensing false alarm rate, and the sensing detection probability directly into the effective secrecy rate as weighting coefficients. For system design, we aim to maximize the overall effective secrecy rate subject to Alice's average transmit power remaining below a predetermined threshold. To address the resulting non-convex design problem, an algorithm based on semi-definite relaxation (SDR) and double-layer optimization is proposed. Our numerical results show that the proposed two-phase secure ISAC framework significantly enhances the secrecy rate compared to a conventional physical layer security (PLS) system if Eve is present with a low probability.
Document Type
Conference Proceeding
Date of Publication
1-1-2025
Publication Title
2025 IEEE International Conference on Communications Workshops ICC Workshops 2025
Publisher
IEEE
School
School of Science
RAS ID
84824
Funders
Hainan Province Science and Technology Special Fund (ZDYF2024GXJS292) / National Natural Science Foundation of China (U22A2002, 62371004) / Scientific Research Fund Project of Hainan University (KYQD(ZR)-21008) / University Synergy Innovation Program of Anhui Province (GXXT-2022-055)
Copyright
subscription content
First Page
1245
Last Page
1250
Comments
Zhang, Q., Yan, S., Zhou, X., Shu, F., Ng, D. W. K., & Schober, R. (2025). A sensing-based two-phase secure ISAC framework. In 2025 IEEE International Conference on Communications Workshops (ICC Workshops) (pp. 1245-1250). IEEE. https://doi.org/10.1109/ICCWorkshops67674.2025.11162369