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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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.
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|Divisions:||Faculty of Engineering and Physical Sciences > Electronic Engineering > Centre for Communication Systems Research|
|Deposited By:||Symplectic Elements|
|Deposited On:||05 Oct 2012 14:05|
|Last Modified:||01 Apr 2013 14:47|
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