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Information 2019, 10(1), 13; https://doi.org/10.3390/info10010013

Throughput of Wireless-Powered Based Multiuser System with Large-Scale Distributed Antennas

1
State Grid Shandong Electric Power Research Institute, Jinan 250000, China
2
National Key Laboratory of Science and Technology on Vessel Integrated Power System, Naval University of Engineering, Wuhan 430000, China
3
School of Physics and Engineering, Qufu Normal University, Jining 273165, China
*
Author to whom correspondence should be addressed.
Received: 26 November 2018 / Revised: 19 December 2018 / Accepted: 24 December 2018 / Published: 30 December 2018
(This article belongs to the Section Information and Communications Technology)
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Abstract

This paper investigates energy harvesting based multiuser system with large-scale distributed antennas, where a large number of remote antenna units (RAUs) are evenly separated across multiple circles. An efficient wireless energy and information transmission protocol is proposed. To save the signaling and the radio frequency chains overheads, the RAU with the shortest distance towards a user equipment (UE) is employed for the downlink wireless energy transfer (WET). In the uplink phase, we analyze the probability of wireless information transmission (WIT) of UEs. Then, linear zero-forcing detection and minimum-mean-square error are used to separate the data information among all the UEs that satisfy the requirement of WIT. The asymptotic throughput for an arbitrary UE is derived in closed-form. The time fraction used for the WET is optimized through maximizing the asymptotic throughput. Numerical and simulation results are given to verify the theoretical analysis, and bring to light the time fraction planning and the RAUs deployment for the system. View Full-Text
Keywords: energy harvesting; massive distributed antenna system; remote antenna unit; wireless energy transfer; wireless information transmission energy harvesting; massive distributed antenna system; remote antenna unit; wireless energy transfer; wireless information transmission
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Wang, Q.; Wei, J.; Guo, W. Throughput of Wireless-Powered Based Multiuser System with Large-Scale Distributed Antennas. Information 2019, 10, 13.

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