Secure short-packet communications in power beacon-assisted IoT networks over Nakagami-m fading channels

作者：Dechuan Chen, Jin Li, Jianwei Hu, Xingang Zhang, Shuai Zhang, Dong Wang · 发表于：EURASIP Journal on Wireless Communications and Networking · 年份：2024 · DOI：10.1186/s13638-024-02409-w · 被引用次数：9 · 研究领域：Energy Harvesting in Wireless Networks、Advanced MIMO Systems Optimization、Advanced Wireless Communication Technologies

In this work, we investigate short-packet communications in power beacon (PB)-assisted Internet-of-Things (IoT) networks, where an energy-constrained actuator first harvests energy from a dedicated PB, and then transmits confidential signals to a desired controller in the presence of an eavesdropper. We derive a closed-form lower bound approximation expression for the average achievable effective secrecy rate (AESR) over Nakagami- m fading channels. To gain more insights, we also present the asymptotic average AESR in the high signal-to-noise ratio (SNR) regime. Specifically, analytical results indicate that an average AESR floor appears with the increase of SNR. Moreover, a low complexity one-dimensional search method is employed to maximize the average AESR by optimizing the energy harvesting length. Monte-Carlo simulations are provided to corroborate our analysis.