Performance Analysis of the Two-Way Relay System with Covert Communication

Performance Analysis of the Two-Way Relay System with Covert Communication | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Performance Analysis of the Two-Way Relay System with Covert Communication Yaocong Xie, Zhenmin Li, Enyu Li This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7421102/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract Covert communication has emerged as a new transmission technology aiming at the privacy and security challenges in wireless networks. This paper considers the covert performance in a two-way relay-assisted network. Specifically, the source transmits public information to the legitimate user as a cover with the assistance of the two-way relay, and the uplink user secretly sends covert data to the source through the relay to prevent detection by the warden. To optimize the system design, we utilize the physical layer network coding (PNC) technology to encrypt covert data, which can achieve absolute security in the relay forwarding stage. Then, the detection error probability (DEP) and the optimal detection threshold that determines the performance limit of the warden detector are derived under the covertness constraint. In addition, we investigate the physical layer security (PLS) performance of the considered network. In the case of the warden as the eavesdropper, we propose a new performance metric-covert intercept probability (CIP) and jointly analyze the security and reliability of data transmission with the system outage probability (OP). Finally, the approximate results under high signal-to-noise ratio (SNR) and the impact of relevant parameters are studied in detail. The Monte Carlo simulation results verify the accuracy of theoretical derivation and the effectiveness of two-way relay-assisted covert communication. Covert communications Physical layer security Two-way relay Physical layer network coding Detection error probability Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-7421102","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":527299882,"identity":"35ea45dc-b1f3-47a7-9ed3-c8283cd32170","order_by":0,"name":"Yaocong Xie","email":"","orcid":"","institution":"Qingdao University of Technology","correspondingAuthor":false,"prefix":"","firstName":"Yaocong","middleName":"","lastName":"Xie","suffix":""},{"id":527299883,"identity":"d0998132-53d5-4990-b7cd-aaacb06484fe","order_by":1,"name":"Zhenmin Li","email":"","orcid":"","institution":"Qingdao University of 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