Enhancing Frequency Hopping Security in ISAC Systems: A Physical Layer Security Approach

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Contributors

Abstract

This paper explores the security vulnerabilities in Frequency Hopping (FH) signals within Integrated Sensing and Communication (ISAC) systems, focusing on the risks of eavesdropping and location privacy breaches due to FH sequence leakage. Unlike existing methods using Channel Reciprocity-based Key Generation (CRKG) at higher communication layers, this research pioneers a novel approach. CRKG is creatively applied to enhance security in the physical layer of FH signal transmission. Innovative strategies, including Multiple Input Multiple Output (MIMO)-FH modulation on FH sub-pulses and vector quantization, generate shared secrets as FH sequences, increasing entropy and randomness significantly. The study involves the embedding of information into MIMO-FH sub-pulses using Phase Shift Keying (PSK) modulation techniques, demon-strating superiority over traditional techniques with enhanced FH sequence similarity, higher entropy, randomness, and reduced Bit Error Rates (BER). These findings significantly advance the security and privacy of FH communication in ISAC applications.

Details

Original languageEnglish
Title of host publication2024 IEEE 4th International Symposium on Joint Communications and Sensing, JC and S 2024
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-6
ISBN (electronic)9798350385441
Publication statusPublished - 2024
Peer-reviewedYes

Conference

Title4th IEEE International Symposium on Joint Communications and Sensing
Abbreviated titleJC&S 2024
Conference number4
Duration19 - 21 March 2024
Website
Locationimec Leuven & Online
CityLeuven
CountryBelgium

External IDs

ORCID /0000-0002-0466-562X/work/175749410

Keywords

Keywords

  • channel reciprocity-based key generation, frequency hopping, Integrated sensing and communication, physical layer security, vector quantization