Optimal Power and Time Allocation for WPCNs With Piece-Wise Linear EH Model

被引：65

作者：

Pejoski, Slavche ^{[1
]}

Hadzi-Velko, Zoran ^{[1
]}

Schober, Robert ^{[2
]}

机构：

[1] Ss Cyril & Methodius Univ, Fac Elect Engn & Informat Technol, Skopje 1000, Macedonia

[2] Friedrich Alexander Univ Erlangen Nurnberg, Inst Digital Commun, D-91058 Erlangen, Germany

来源：

IEEE WIRELESS COMMUNICATIONS LETTERS | 2018年 / 7卷 / 03期

关键词：

Energy harvesting; WPCN; non-linear EH model; resource allocation; ENERGY HARVESTING MODEL; COMMUNICATION-NETWORKS; RESOURCE-ALLOCATION; SWIPT;

D O I：

10.1109/LWC.2017.2778146

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

We propose a novel transmission protocol for harvest-then-transmit wireless powered communication networks, which takes into account the non-linearity of the energy harvesting (EH) process at the EH users and maximizes the sum rate in the uplink. We assume a piece-wise linear EH model and provide expressions for the optimal transmit power of the base station (BS), the duration of the EH phase, and the duration of the uplink information transmission phases of the users. The obtained solution provides insight regarding the significance of the non-linear EH model on the optimal resource allocation. Simulations unveil the growing impact of the saturation effect, which occurs for high received radio frequency powers, as the average and the maximum instantaneous transmit powers of the BS increase.

引用

页码：364 / 367

页数：4

共 11 条

[1] Robust Resource Allocation for MIMO Wireless Powered Communication Networks Based on a Non-Linear EH Model [J].