Energy Efficiency Analysis of Idealized Coordinated Multi-Point Communication System

Héliot, F., Imran, M. A. and Tafazolli, R. (2011) Energy Efficiency Analysis of Idealized Coordinated Multi-Point Communication System. In: 2011 IEEE 73rd Vehicular Technology Conference (VTC Spring), Budapest, Hungary, 15-18 May 2011, ISBN 9781424483310 (doi: 10.1109/VETECS.2011.5956410)

Abstract

Coordinated multi-point (CoMP) architecture has proved to be very effective for improving the user fairness and spectral efficiency of cellular communication system, however, its energy efficiency remains to be evaluated. In this paper, CoMP system is idealized as a distributed antenna system by assuming perfect backhauling and cooperative processing. This simplified model allows us to express the capacity of the idealized CoMP system with a simple and accurate closed-form approximation. In addition, a framework for the energy efficiency analysis of CoMP system is introduced, which includes a power consumption model and an energy efficiency metric, i.e. bit-per-joule capacity. This framework along with our closed-form approximation are utilized for assessing both the channel and bit-per-joule capacities of the idealized CoMP system. Results indicate that multi-base-station cooperation can be energy efficient for cell-edge communication and that the backhauling and cooperative processing power should be kept low. Overall, it has been shown that the potential of improvement of CoMP in terms of bit-per-joule capacity is not as high as in terms of channel capacity due to associated energy cost for cooperative processing and backhauling.

• Item Type: Conference Proceedings
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Imran, Professor Muhammad
• Authors: Héliot, F., Imran, M. A., and Tafazolli, R.
• College/School: College of Science and Engineering > School of Engineering
• ISSN: 1550-2252
• ISBN: 9781424483310
• Published Online: 18 July 2011
• Copyright Holders: Copyright © 2011 IEEE
• First Published: First published in 2011 IEEE 73rd Vehicular Technology Conference (VTC Spring)
• Publisher Policy: Reproduced in accordance with the publisher copyright policy