New energy efficiency metric with imperfect channel considerations for OFDMA systems

C. Zarakovitis, Charilaos and Ni, Qiang and Spiliotis, J. (2014) New energy efficiency metric with imperfect channel considerations for OFDMA systems. IEEE Wireless Communications Letters, 3 (5). pp. 473-476. ISSN 2162-2337

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Abstract

Considering recent important efforts on green radio technologies this letter deliberates on imperfect channel realisations to propose a new effective-energy-efficiency metric for downlink transmissions in multi-user, multi-carrier orthogonal frequency division multiple access (OFDMA) systems. To comply with the traditional energy efficiency formula under the assumption of perfect channel knowledge available, this new metric is designed on the fractional relation between the effective throughput and the total power consumed at the transmitter. Mathematical proofs are presented to confirm such compliance in terms of the impact of the channel coefficients on the energy efficiency performance. In order to prove the property, the letter also presents a profound insight on the monotonicity of the noncentralised chi-squared distribution.

Item Type:
Journal Article
Journal or Publication Title:
IEEE Wireless Communications Letters
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3101
Subjects:
ID Code:
70506
Deposited By:
Deposited On:
21 Aug 2014 12:30
Refereed?:
Yes
Published?:
Published
Last Modified:
24 Aug 2020 09:55