2014/09/12 by Meng Zhang, Yuan Liu, Zhang, Meng +3 · 1 citation
Computer Science · Engineering · Mathematics · #Antenna Design and Analysis #Energy Harvesting in Wireless Networks #FOS: Computer and information sciences #Information Theory (cs.IT) #Wireless Communication Security Techniques #cs.IT #math.IT
paper · pdf · doi:10.48550/arxiv.1409.3635
Accepted by WCSP 2014
arxiv created 2014/09/12 · openalex publication_date 2014/09/12 · arxiv updated 2014/09/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Energy harvesting and physical-layer security in wireless networks are of great significance. In this paper, we study the simultaneous wireless information and power transfer (SWIPT) in downlink orthogonal frequency-division multiple access (OFDMA) systems, where each user applies power splitting to coordinate the energy harvesting and information decoding processes while secrecy information requirement is guaranteed. The problem is formulated to maximize the aggregate harvested power at the users while satisfying secrecy rate requirements of all users by subcarrier allocation and the optimal power splitting ratio selection. Due to the NP-hardness of the problem, we propose an efficient iterative algorithm. The numerical results show that the proposed method outperforms conventional methods.