Energy-Efficiency Based Resource Allocation for the Orthogonal Multi-User Channel

Héliot, F., Imran, M. A. and Tafazolli, R. (2012) Energy-Efficiency Based Resource Allocation for the Orthogonal Multi-User Channel. In: 2012 IEEE Vehicular Technology Conference (VTC Fall), Québec City, Canada, 03-06 Sep 2012, ISBN 9781467318815 (doi: 10.1109/VTCFall.2012.6399243)

Abstract

Energy efficiency (EE) is emerging as a key design criterion for both power limited, i.e. mobile devices, and power-unlimited, i.e. cellular networks, applications. Whereas, resource allocation is a well-known technique for improving the performance of communication systems. In this paper, we design a simple and optimal EE-based resource allocation method for the orthogonal multi-user channel by adapting the transmit power and rate to the channel condition such that the energy-per-bit consumption is minimized. We present our EE framework, i.e. EE metric and node power consumption model, and utilize it for formulating our EE-based optimization problem with or without constraint. In both cases, we derive explicit formulations of the optimal energy-per-bit consumption as well as optimal power and rate for each user. Our results indicate that EE-based allocation can substantially reduce the consumed power and increase the EE in comparison with spectral efficiency-based allocation.

• Item Type: Conference Proceedings
• Additional Information: The research leading to these results has received funding from the European Commission’s Seventh Framework Programme FP7/2007-2013 under grant agreement n◦247733- project EARTH.
• 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: 1090-3038
• ISBN: 9781467318815
• Published Online: 31 December 2012
• Copyright Holders: Copyright © 2012 IEEE
• First Published: First published in 2012 IEEE Vehicular Technology Conference (VTC Fall)
• Publisher Policy: Reproduced in accordance with the publisher copyright policy