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Flexible resource allocation for joint optimization of energy and spectral efficiency in OFDMA multi-cell networks

Flexible resource allocation for joint optimization of energy and spectral efficiency in OFDMA multi-cell networks
Flexible resource allocation for joint optimization of energy and spectral efficiency in OFDMA multi-cell networks
The radio resource allocation problem is studied, aiming to jointly optimize the energy efficiency (EE) and spectral efficiency (SE) of downlink OFDMA multi-cell networks. Different from existing works on either EE or SE optimization, a novel EE-SE tradeoff (EST) metric, which can capture both the EST relation and the individual cells’ preferences for EE or SE performance, is introduced as the utility function for each base station (BS). Then the joint EE-SE optimization problem is formulated, and an iterative subchannel allocation and power allocation algorithm is proposed. Numerical results show that the proposed algorithm can exploit the EST relation flexibly and optimize the EE and SE simultaneously to meet diverse EE and SE preferences of individual cells.
energy efficiency, joint optimization, OFDMA multi-cell, resource allocation, spectral efficiency
451-454
Jing, Wenpeng
a20e782c-6478-4d30-826d-49c8faee33e4
Lu, Zhaoming
e0651226-abad-42b8-bd59-e0b1e0c035c2
Wen, Xiangming
958781f1-0b8e-4c62-9d5b-cbed2ecc12dd
Hu, Zhiqun
dab5bd5a-2411-4946-b3fd-169b55f26633
Yang, Shaoshi
df1e6c38-ff3b-473e-b36b-4820db908e60
Jing, Wenpeng
a20e782c-6478-4d30-826d-49c8faee33e4
Lu, Zhaoming
e0651226-abad-42b8-bd59-e0b1e0c035c2
Wen, Xiangming
958781f1-0b8e-4c62-9d5b-cbed2ecc12dd
Hu, Zhiqun
dab5bd5a-2411-4946-b3fd-169b55f26633
Yang, Shaoshi
df1e6c38-ff3b-473e-b36b-4820db908e60

Jing, Wenpeng, Lu, Zhaoming, Wen, Xiangming, Hu, Zhiqun and Yang, Shaoshi (2015) Flexible resource allocation for joint optimization of energy and spectral efficiency in OFDMA multi-cell networks. IEEE Communications Letters, 19 (3), 451-454. (doi:10.1109/LCOMM.2015.2392113).

Record type: Article

Abstract

The radio resource allocation problem is studied, aiming to jointly optimize the energy efficiency (EE) and spectral efficiency (SE) of downlink OFDMA multi-cell networks. Different from existing works on either EE or SE optimization, a novel EE-SE tradeoff (EST) metric, which can capture both the EST relation and the individual cells’ preferences for EE or SE performance, is introduced as the utility function for each base station (BS). Then the joint EE-SE optimization problem is formulated, and an iterative subchannel allocation and power allocation algorithm is proposed. Numerical results show that the proposed algorithm can exploit the EST relation flexibly and optimize the EE and SE simultaneously to meet diverse EE and SE preferences of individual cells.

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More information

Published date: 6 March 2015
Keywords: energy efficiency, joint optimization, OFDMA multi-cell, resource allocation, spectral efficiency
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 373236
URI: https://eprints.soton.ac.uk/id/eprint/373236
PURE UUID: dca6ddb3-2fc1-4e14-9b7f-0537e54413b3

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Date deposited: 12 Jan 2015 16:55
Last modified: 17 Jul 2017 21:35

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