Musavian, Leila and Ni, Qiang (2015) Effective Capacity Maximization With Statistical Delay and Effective Energy Efficiency Requirements. IEEE Transactions on Wireless Communications, 14 (7). pp. 3824-3835. DOI https://doi.org/10.1109/twc.2015.2412542
Musavian, Leila and Ni, Qiang (2015) Effective Capacity Maximization With Statistical Delay and Effective Energy Efficiency Requirements. IEEE Transactions on Wireless Communications, 14 (7). pp. 3824-3835. DOI https://doi.org/10.1109/twc.2015.2412542
Musavian, Leila and Ni, Qiang (2015) Effective Capacity Maximization With Statistical Delay and Effective Energy Efficiency Requirements. IEEE Transactions on Wireless Communications, 14 (7). pp. 3824-3835. DOI https://doi.org/10.1109/twc.2015.2412542
Abstract
This paper presents the three-fold energy, rate and delay tradeoff in mobile multimedia fading channels. In particular, we propose a rate-efficient power allocation strategy for delay-outage limited applications with constraints on energy-per-bit consumption of the system. For this purpose, at a target delay-outage probability, the link-layer energy efficiency, referred to as effective-EE, is measured by the ratio of effective capacity (EC) and the total expenditure power, including the transmission power and the circuit power. At first, the maximum effective-EE of the channel at a target delay-outage probability is found. Then, the optimal power allocation strategy is obtained to maximize EC subject to an effective-EE constraint with the limit set at a certain ratio of the maximum achievable effective-EE of the channel. We then investigate the effect of the circuit power level on the maximum EC. Further, to set a guideline on how to choose the effective-EE limit, we obtain the transmit power level at which the rate of increasing EC (as a function of transmit power) matches a scaled rate of losing effective-EE. Analytical results show that a considerable EC-gain can be achieved with a small sacrifice in effective-EE from its maximum value. This gain increases considerably as the delay constraint becomes tight.
Item Type: | Article |
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Uncontrolled Keywords: | Delay-outage probability constraint; energy-rate-delay tradeoff; effective capacity; effective energy efficiency; Nakagami fading |
Subjects: | Q Science > QA Mathematics > QA75 Electronic computers. Computer science |
Divisions: | Faculty of Science and Health Faculty of Science and Health > Computer Science and Electronic Engineering, School of |
SWORD Depositor: | Unnamed user with email elements@essex.ac.uk |
Depositing User: | Unnamed user with email elements@essex.ac.uk |
Date Deposited: | 02 Feb 2017 15:13 |
Last Modified: | 16 May 2024 16:55 |
URI: | http://repository.essex.ac.uk/id/eprint/18941 |
Available files
Filename: 07061966.pdf
Licence: Creative Commons: Attribution 3.0