A very tight approximation of the SISO energy efficiency-spectral efficiency trade-off

Héliot, F., Imran, M. A. and Tafazolli, R. (2012) A very tight approximation of the SISO energy efficiency-spectral efficiency trade-off. IEEE Communications Letters, 16(6), pp. 850-853. (doi: 10.1109/LCOMM.2012.042512.120253)

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: Articles
• 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
• Journal Name: IEEE Communications Letters
• Publisher: IEEE
• ISSN: 1089-7798
• ISSN (Online): 1558-2558
• Published Online: 25 May 2012
• Copyright Holders: Copyright © 2012 IEEE
• First Published: First published in IEEE Communications Letters 16(6): 850-853
• Publisher Policy: Reproduced in accordance with the publisher copyright policy