Throughput and Energy Efficiency of Wireless Powered Multi-tier MIMO HetNets

Throughput and Energy Efficiency of Wireless Powered Multi-tier MIMO HetNets Wireless powered communications have been recently proposed as a variable power solution for the heterogeneous networks (HetNets) with small and flexible deployments of low-power base stations (BSs). In this paper, we consider the wireless powered multi-tier multi-input multi-output (MIMO) HetNets, where the multi-antenna BSs perform downlink transmission. In particular, we consider two cases of interests, i.e., 1) energy harvesting (EH) without energy beamforming (EB) tier and 2) EH with EB tier. Using tools of stochastic geometry, we perform analysis on the throughput and energy efficiency (EE) of the considered network. Closed-form and tractable results are obtained to reveal interesting insights that the proposed wireless-powered MIMO HetNets can achieve higher EE as compared to the conventional HetNets without EH, and the EE performance can be further improved by introducing well-designed EB across tiers. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Signal Processing Systems Springer Journals

Throughput and Energy Efficiency of Wireless Powered Multi-tier MIMO HetNets

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Publisher
Springer Journals
Copyright
Copyright © 2018 by Springer Science+Business Media, LLC, part of Springer Nature
Subject
Engineering; Signal,Image and Speech Processing; Circuits and Systems; Electrical Engineering; Image Processing and Computer Vision; Pattern Recognition; Computer Imaging, Vision, Pattern Recognition and Graphics
ISSN
1939-8018
eISSN
1939-8115
D.O.I.
10.1007/s11265-018-1354-y
Publisher site
See Article on Publisher Site

Abstract

Wireless powered communications have been recently proposed as a variable power solution for the heterogeneous networks (HetNets) with small and flexible deployments of low-power base stations (BSs). In this paper, we consider the wireless powered multi-tier multi-input multi-output (MIMO) HetNets, where the multi-antenna BSs perform downlink transmission. In particular, we consider two cases of interests, i.e., 1) energy harvesting (EH) without energy beamforming (EB) tier and 2) EH with EB tier. Using tools of stochastic geometry, we perform analysis on the throughput and energy efficiency (EE) of the considered network. Closed-form and tractable results are obtained to reveal interesting insights that the proposed wireless-powered MIMO HetNets can achieve higher EE as compared to the conventional HetNets without EH, and the EE performance can be further improved by introducing well-designed EB across tiers.

Journal

Journal of Signal Processing SystemsSpringer Journals

Published: Apr 3, 2018

References

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