Published: 18 Mar 2025
Physical Layer Security in Lossy Untrusted Relay Networks with Finite Blocklength
Volume 1
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Shen Qian
shen-qian@st.seikei.ac.jp
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Meng Cheng
meng.cheng@shnu.edu.cn
In this paper, we examine the physical layer security (PLS) in lossy untrusted relay networks, focusing on finite blocklength transmissions. In such networks, ensuring secure communication is particularly challenging due to the presence of untrusted relay nodes and the inherent limitations of short-packet transmissions. We propose the reliable-and-secure probability (RSP) as a performance metric to evaluate the likelihood that the destination node successfully recovers the transmitted message while untrusted relays..