Achieving energy efficiency fairness in multicell MISO downlink |
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Author: | Nguyen, Kien-Giang1; Tran, Le-Nam2; Tervo, Oskari1; |
Organizations: |
1Department of Communications Engineering and Centre for Wireless Communications, University of Oulu, FI-90014, Finland 2Department of Electronic Engineering, Maynooth University, Ireland 3School of Electronics and Information, Kyung Hee University, Yongin 449-701, South Korea |
Format: | article |
Version: | accepted version |
Access: | open |
Online Access: | PDF Full Text (PDF, 0.3 MB) |
Persistent link: | http://urn.fi/urn:nbn:fi-fe2018062726506 |
Language: | English |
Published: |
Institute of Electrical and Electronics Engineers,
2015
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Publish Date: | 2018-06-27 |
Description: |
AbstractWe investigate the fairness of achievable energy efficiency in a multicell multiuser multiple-input single-output (MISO) downlink system, where a beamforming scheme is designed to maximize the minimum energy efficiency among all base stations. The resulting optimization problem is a nonconvex max-min fractional program, which is generally difficult to solve optimally. We propose an iterative beamformer design based on an inner approximation algorithm which aims at locating a Karush-Kuhn-Tucker solution to the nonconvex program. By novel transformations, we arrive at a convex problem at each iteration of the proposed algorithm, which is amendable for being approximated by a second order cone program. The numerical results demonstrate that the proposed algorithm outperforms the existing schemes in terms of the convergence rate and processing time. see all
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Series: |
IEEE communications letters |
ISSN: | 1089-7798 |
ISSN-E: | 2373-7891 |
ISSN-L: | 1089-7798 |
Volume: | 19 |
Issue: | 8 |
DOI: | 10.1109/LCOMM.2015.2436382 |
OADOI: | https://oadoi.org/10.1109/LCOMM.2015.2436382 |
Type of Publication: |
A1 Journal article – refereed |
Field of Science: |
213 Electronic, automation and communications engineering, electronics |
Subjects: | |
Funding: |
This work was supported in part by the Finnish Funding Agency for Innovation (Tekes) under the project “Cross-Layer Modeling and Design of Energy-Aware Cognitive Radio Networks (CREAM)” and the Academy of Finland under project “WiFiUS: Message and CSI Sharing for Cellular Interference Management with Backhaul Constraints”. |
Copyright information: |
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