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A Very Tight Approximation of the SISO Energy Efficiency-Spectral Efficiency Trade-Off

Heliot, F, Imran, MA and Tafazolli, R (2012) A Very Tight Approximation of the SISO Energy Efficiency-Spectral Efficiency Trade-Off IEEE Communications Letters, 16 (6). 850 - 853. ISSN 1089-7798

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Abstract

Beside the well-established spectral-efficiency (SE), energy-efficiency (EE) is currently becoming an important performance evaluation metric, which in turn makes the EE-SE trade-off as a prominent criterion for efficiently designing future communication systems. In this letter, we propose a very tight closed-form approximation (CFA) of this trade-off over the single-input single-output (SISO) Rayleigh flat fading channel. We first derive an improved approximation of the SISO ergodic capacity by means of a parametric function and then utilize it for obtaining our novel EE-SE trade-off CFA, which is also generalized for the symmetric multi-input multi-output channel. We compare our CFA with existing CFAs and show its improved accuracy in comparison with the latter.

Item Type: Article
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Copyright 2012 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

Divisions: Faculty of Engineering and Physical Sciences > Electronic Engineering > Centre for Communication Systems Research
Depositing User: Symplectic Elements
Date Deposited: 05 Oct 2012 13:05
Last Modified: 23 Sep 2013 19:31
URI: http://epubs.surrey.ac.uk/id/eprint/710806

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