Paper Info
Title
Joint Beamforming and Time Duration Optimization for Battery-Free-Multi-Antenna-Relay-Assisted WPCN.
Abstract
This paper studies an energy beamforming and time duration joint optimization problem for maximizing the sum-rate of a battery-free-multi-antenna-relay-assisted wireless powered communication network (WPCN). The considered problem is non-convex due to the strongly coupled optimization variables. By introducing new optimization variables and reformulating the problem into a convex problem, the optimal solution is obtained based on convex optimization methods. Furthermore, an alternate iteration algorithm is proposed by decoupling the problem into two subproblems, and a semi-closed form solution of the optimal energy beamforming matrix is derived with given time allocation. Simulation results indicate that the proposed battery-free multiantenna relay architecture can deliver a significant sum-rate gain for the WPCN. In addition, the proposed suboptimal algorithm only has 5% sum-rate loss compared to the optimal solution.
Year
DOI
Venue
2018
10.1109/GLOCOM.2018.8647656
IEEE Global Communications Conference
Keywords
Field
DocType
WPCN,multi-antenna relay,time duration allocation,energy beamforming,battery-free multi-antenna
Beamforming,Mathematical optimization,Telecommunications network,Wireless,Matrix (mathematics),Computer science,Decoupling (cosmology),Real-time computing,Convex optimization,Optimization problem,Relay
Conference
ISSN
Citations 
PageRank 
2334-0983
0
0.34
References 
Authors
0
5
Name
Order
Citations
PageRank
Fan Yang122.05
Wenjun Xu24511.81
Chia-han Lee360755.50
Zhiyong Feng414829.14
Jiaru Lin564680.74