Resource Allocation for Joint Transmitter and Receiver Energy Efficiency Maximization in Downlink OFDMA Systems
Author
dc.contributor.author
Wu, Qingqing
Author
dc.contributor.author
Chen, Wen
Author
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Tao, Meixia
Author
dc.contributor.author
Li, Jun
Author
dc.contributor.author
Tang, Hongying
Author
dc.contributor.author
Wu, Jinsong
Admission date
dc.date.accessioned
2015-08-04T15:13:32Z
Available date
dc.date.available
2015-08-04T15:13:32Z
Publication date
dc.date.issued
2015
Cita de ítem
dc.identifier.citation
IEEE TRANSACTIONS ON COMMUNICATIONS, VOL. 63, NO. 2, FEBRUARY 2015
en_US
Identifier
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DOI: 10.1109/TCOMM.2014.2385705
Identifier
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https://repositorio.uchile.cl/handle/2250/132324
General note
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Artículo de publicación ISI
en_US
Abstract
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This paper investigates the joint transmitter and receiver
optimization for the energy efficiency (EE) in orthogonal
frequency-division multiple-access (OFDMA) systems. We first
establish a holistic power dissipation model for OFDMA systems,
including the transmission power, signal processing power, and
circuit power from both the transmitter and receiver sides, while
existing works only consider the one side power consumption
and also fail to capture the impact of subcarriers and users on
the system EE. The EE maximization problem is formulated as
a combinatorial fractional problem that is NP-hard. To make
it tractable, we transform the problem of fractional form into
a subtractive-form one by using the Dinkelbach transformation
and then propose a joint optimization method, which leads to
the asymptotically optimal solution. To reduce the computational
complexity, we decompose the joint optimization into two consecutive
steps, where the key idea lies in exploring the inherent
fractional structure of the introduced individual EE and the
system EE. In addition, we provide a sufficient condition under
which our proposed two-step method is optimal. Numerical results
demonstrate the effectiveness of proposed methods, and the effect
of imperfect channel state information is also characterized.
en_US
Patrocinador
dc.description.sponsorship
National 973 Project
2012CB316106
NSF China
61161130529
61328101
61322102
61329101
STCSM Science and Technology Innovation Program
13510711200
SEU National Key Laboratory on Mobile Communications
2013D11