Adaptive secure transmission for two‐way energy harvesting relay networks with two‐sided eavesdropping. Issue 2 (2nd December 2022)

• Record Type: Journal Article
• Authors: Song, Xin; Zhu, Jiahui; Zhang, Runfeng; Peng, Mingjv; Xu, Siyang
• Is Part Of: Transactions on emerging telecommunications technologies. Volume 34:Issue 2(2023)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-12-02
• Subjects: Telecommunication -- Periodicals; 384.05
• DOI: 10.1002/ett.4696
• Languages: English
• ISSNs: 2161-5748

Abstract

Abstract: In this paper, for energy harvesting (EH) two‐way relay (TWR) networks with two‐sided eavesdroppers, the problem of secure information transmission is investigated. Based on this system model, a novel full‐duplex (FD) relaying jamming scheme is proposed to achieve simultaneously information reception, EH and jamming signal transmission at the cooperative relay. Particularly, the entire transmission phase and received signal at relay node are divided into two different time durations and three different parts by time allocation (TA) and power splitting (PS), respectively. For the aim of maximizing the sum secrecy rate, adaptive TA factor and PS factor are jointly optimized. We derive the non‐convex optimization function. To solve this highly non‐convex optimization problem, a heuristic approach based on particle swarm optimization (PSO) is proposed. Numerical results verify the superior sum secrecy rate of the proposed scheme. Besides, the impact of system parameters on the output performance is analyzed. Abstract : A two‐sided eavesdropping scenario is considered for two‐way relay network. To solve the information leakage problem and power‐constrained problem, a novel secure transmission scheme based on full‐duplex relaying jamming and energy harvesting is proposed. Time allocation factor and power splitting factor are jointly optimized to maximize the sum secrecy rate.