Throughput Maximization for Multi-Hop Decode-and-Forward Relay Network With Wireless Energy Harvesting

作     者：Fan, Rongfei Atapattu, Saman Chen, Wen Zhang, Yihao Evans, Jamie 

作者机构：Beijing Inst Technol Sch Informat & Elect Beijing 100081 Peoples R China Univ Melbourne Dept Elect & Elect Engn Melbourne Vic 3010 Australia Rutgers State Univ Sch Arts & Sci New Brunswick NJ 08901 USA 

出 版 物：《IEEE ACCESS》 (IEEE Access)

年 卷 期：2018年第6卷

页      面：24582-24595页

核心收录：

基　　金：National Natural Science Foundation of China [61601025, 61771054, 61421001, 61501028] Australian Research Council [DE160100020] Program of China Scholarship Council Australian Research Council [DE160100020] Funding Source: Australian Research Council 

主　　题：Decode-and-forward relay energy harvesting multi-hop networks power-splitting time-switching 

摘      要：In this paper, we consider multi-hop wireless networks with decode-and-forward relays. Intermediate relays have no fixed power supplies and thus need to replenish energy via wireless energy harvesting from the source signal. The technique of simultaneous wireless information and power transfer (SWIPT) is utilized between every two adjacent nodes to transport both information and energy. Three general protocols of SWIPT are considered: power-splitting (PS), time-switching (TS), and hybrid which is a combination of PS and TS protocols. For each protocol, we formulate optimization problems to decide optimal PS and TS ratios so as to maximize end-to-end throughput under two schemes. Scheme 1 allows different PS and TS ratios at each relay, and Scheme 2 uses uniform PS and TS ratios for all the relays. The proposed optimization problems are shown to be non-convex. With a series of transformations, we turn the proposed non-convex optimization problems to be convex ones. Insightful analysis of the system performance is presented in the part of numerical results.