Transmission Power and Antenna Allocation for Energy-Efficient RF EnergyHarvesting Networks with Massive MIMO

Collection with item attached
2017
Item details URL
http://open-repository.kisti.re.kr/cube/handle/open_repository/486471.do
DOI
10.3390/en10060802
Title
Transmission Power and Antenna Allocation for Energy-Efficient RF EnergyHarvesting Networks with Massive MIMO
Description
This work was, in part, supported by the National Research Foundation ofKorea (NRF) grant funded by the Korean government (MSIP)(2014R1A5A1011478) and in part by Kwangwoon University in 2015.
abstract
The optimum transmission strategy for maximizing energy efficiency (EE) of a multi-user massive multiple-input multiple-output (MIMO) system in radio frequency energy harvesting networks is investigated. We focus on dynamic time-switching (TS) antennas, to avoid the practical problems of power-splitting antennas, such as complex architectures, power loss and signal distortion when splitting the power of the received signal into power for information decoding (ID) and energy harvesting (EH). However, since a single TS antenna cannot serve ID and EH simultaneously, the MIMO system is considered in this paper. We thus formulate an EE optimization problem and propose an iterative algorithm as a tractable solution, including an antenna selection strategy to optimally switch each TS antenna between ID mode and EH mode using nonlinear fractional programming and the Lagrange dual method. Further, the problem is solved under practical constraints of maximum transmission power and outage probabilities for a minimum amount of harvested power and rate capacity for each user. Simulation results show that the proposed algorithm is more energy-efficient than that of baseline schemes, and demonstrates the trade-off between the required amount of harvested power and energy efficiency.
provenance
Made available in Cube on 2018-09-28T16:08:31Z (GMT). No. of bitstreams: 0
language
English
author
Hwang, Yu Min
Park, Ji Ho
Shin, Yoan
Kim, Jin Young
Kim, Dong In
accessioned
2018-09-28T16:08:31Z
available
2018-09-28T16:08:31Z
issued
2017
citation
ENERGIES(10): 6
issn
1996-1073
uri
http://open-repository.kisti.re.kr/cube/handle/open_repository/486471.do
Funder
교육부
Funding Program
BK21플러스사업(0.5)
Project ID
1345274008
Jurisdiction
Rep.of Korea
Project Name
ICT HRD Institute for New value Creation
rights
openAccess
subject
radio frequency-energy harvesting
massive MIMO
energy efficiency (EE)
resource allocation
time-switching (TS) antenna
Lagrange dual method
type
article


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