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Energy-aware subchannels power allocation for downlink transmissions in OFDMA systems


Citation

Madi, Nadim K. M. and Mohd Hanapi, Zurina and Othman, Mohamed and K. Subramaniam, Shamala (2018) Energy-aware subchannels power allocation for downlink transmissions in OFDMA systems. In: 2018 IEEE 4th International Symposium on Telecommunication Technologies (ISTT2018), 26-28 Nov. 2018, Bangi, Selangor, Malaysia. .

Abstract

It is arbitrarily known that the spectrum scarcity issue in the wireless channel has brought to the surface several Quality of Service (QoS)-related challenges for the network operators. Although it is claimed a QoS improvement may be possible if a high wireless signal frequency is generated, this solution does not seem to be compatible with the emerged network scenarios, wherein low power and energy-efficient communications are among the core driving QoS criteria. Minding that, in this paper, we look into the problem of subchannel power allocation at the downlink LTE-A network. Accordingly, an Energy-aware Subchannels Power Allocation (EaSPA) algorithm is proposed to solve the formulated non-convex optimization problem. The system-level simulation experiments imply that the proposed subchannels power allocation model enhances the energy efficiency by 20% compared with a reference scheme. In addition, a low dissipated power level is preserved over different network loads.


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Additional Metadata

Item Type: Conference or Workshop Item (Paper)
Divisions: Faculty of Computer Science and Information Technology
DOI Number: https://doi.org/10.1109/ISTT.2018.8701723
Publisher: IEEE
Keywords: LTE-A; QoS; Sub-channels power allocation; Non-convex optimization; Energy efficiency; System capacity
Depositing User: Nabilah Mustapa
Date Deposited: 12 Jun 2019 02:06
Last Modified: 12 Jun 2019 02:06
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1109/ISTT.2018.8701723
URI: http://psasir.upm.edu.my/id/eprint/68940
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