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Energy-Efficiency based Resource Allocation for the Orthogonal Multi-user Channel

Héliot, F, Imran, MA and Tafazolli, R (2012) Energy-Efficiency based Resource Allocation for the Orthogonal Multi-user Channel In: IEEE VTC-fall, 2012-09-03 - 2012-09-06, Quebec city, Canada.

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Energy efficiency (EE) is emerging as a key design criterion for both power limited applications, i.e. mobile devices, and power-unlimited applications, i.e. cellular network. Whereas, resource allocation is a well-known technique for improving the performance of communication system. 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 utilizes 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 or Workshop Item (Conference Paper)
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering > Centre for Communication Systems Research
Authors :
Héliot, F
Imran, MA
Tafazolli, R
Date : 1 September 2012
Additional Information : This is the author's version of a paper accepted for publication in 2012 IEEE 76th Vehicular Technology Conference Proceedings. © 2012 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Depositing User : Symplectic Elements
Date Deposited : 30 Nov 2012 09:37
Last Modified : 31 Oct 2017 14:45

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