Energy-Efficient Power Control for TDD MISO Systems

This paper addresses energy-efficient power control for time-division-duplexing (TDD) multiple-input-single-output (MISO) systems. Assuming ideal channel reciprocity, the beamforming at the transmitter (TX) is based on the estimated channel state information (CSI) obtained from the pilot signal of t...

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Published in:IEEE transactions on vehicular technology 2015-10, Vol.64 (10), p.4851-4856
Main Authors: Jang, Moonheok, Kwon, Younggap, Park, Hyunsung, Hwang, Taewon
Format: Article
Language:English
Subjects:
Array signal processing
Boundaries
Channel estimation
Channels
Control systems
Energy consumption
Energy efficiency
Energy management
imperfect channel state information
Joints
MIMO
multiple-input and single-output
Pareto optimality
Pilots
Power consumption
Power control
Power demand
time-division-duplexing
Vectors
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cited_by cdi_FETCH-LOGICAL-c324t-1c1f29d6ee2093cb29679936454456d69761ba75a92f7e4952218f4dc82598513
cites cdi_FETCH-LOGICAL-c324t-1c1f29d6ee2093cb29679936454456d69761ba75a92f7e4952218f4dc82598513
container_end_page 4856
container_issue 10
container_start_page 4851
container_title IEEE transactions on vehicular technology
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creator Jang, Moonheok
Kwon, Younggap
Park, Hyunsung
Hwang, Taewon
description This paper addresses energy-efficient power control for time-division-duplexing (TDD) multiple-input-single-output (MISO) systems. Assuming ideal channel reciprocity, the beamforming at the transmitter (TX) is based on the estimated channel state information (CSI) obtained from the pilot signal of the receiver (RX). We define the energy efficiencies of the TX and the RX separately and study their energy efficiency region. In addition, we seek a power control scheme that can achieve all the points on the Pareto boundary of the energy efficiency region. We propose to maximize the weighted system energy efficiency, which is the data rate divided by the weighted sum of the power consumption at the TX and the RX. A method based on the quasi-concavity of the weighted system energy efficiency is developed to solve the problem. Simulation results show that the proposed power control can achieve all the points on the Pareto boundary of the energy-efficiency region by varying the weight.
doi_str_mv 10.1109/TVT.2014.2369010
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source IEEE Electronic Library (IEL) Journals
subjects Array signal processing
Boundaries
Channel estimation
Channels
Control systems
Energy consumption
Energy efficiency
Energy management
imperfect channel state information
Joints
MIMO
multiple-input and single-output
Pareto optimality
Pilots
Power consumption
Power control
Power demand
time-division-duplexing
Vectors
title Energy-Efficient Power Control for TDD MISO Systems
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