Low-Complexity Energy-Efficient Resource Allocation for the Downlink of Cellular Systems

Energy efficiency (EE) is undoubtedly an important criterion for designing power-limited systems, and yet in a context of global energy saving, its relevance for power-unlimited systems is steadily growing. Equally, resource allocation is a well-known method for improving the performance of cellular...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on communications 2013-06, Vol.61 (6), p.2271-2281
Main Authors: Heliot, F., Imran, M. A., Tafazolli, R.
Format: Article
Language:English
Subjects:
Algorithm design and analysis
Algorithms
Applied sciences
Cellular
cellular system
Channels
Design engineering
Downlink
Energy conservation
Energy consumption
Energy efficiency
Energy management
Equipments and installations
Exact sciences and technology
Interference
Mobile radiocommunication systems
Optimization
Radiocommunications
realistic power model
Resource allocation
Resource management
Studies
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Transmission and modulation (techniques and equipments)
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Energy efficiency (EE) is undoubtedly an important criterion for designing power-limited systems, and yet in a context of global energy saving, its relevance for power-unlimited systems is steadily growing. Equally, resource allocation is a well-known method for improving the performance of cellular systems. In this paper, we propose an EE optimization framework for the downlink of planar cellular systems over frequency-selective channels. Relying on this framework, we design two novel low-complexity resource allocation algorithms for the single-cell and coordinated multi-cell scenarios, which are EE-optimal and EE-suboptimal, respectively. We then utilize our algorithms for comparing the EE performance of the classic non-coordinated, orthogonal and coordinated multi-cell approaches in realistic power and system settings. Our results show that coordination can be a simple and effective method for improving the EE of cellular systems, especially for medium to large cell sizes. Indeed, by using a coordinated rather than a non-coordinated resource allocation approach, the per-sector energy consumption and transmit power can be reduced by up to 15% and more than 90%, respectively.
ISSN:0090-6778
1558-0857
DOI:10.1109/TCOMM.2013.042313.120516