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Energies 2016, 9(3), 161; doi:10.3390/en9030161

A Biologically-Inspired Power Control Algorithm for Energy-Efficient Cellular Networks

1
Department of Electrical, Electronic and Control Engineering, Institute for Information Technology Convergence, Hankyong National University, 327 Chungang-ro, Anseong 17579, Korea
2
School of the Electrical Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Luca Chiaraviglio
Received: 9 December 2015 / Revised: 5 January 2016 / Accepted: 26 February 2016 / Published: 4 March 2016
(This article belongs to the Special Issue Energy-Efficient and Sustainable Networking)
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Abstract

Most of the energy used to operate a cellular network is consumed by a base station (BS), and reducing the transmission power of a BS can therefore afford a substantial reduction in the amount of energy used in a network. In this paper, we propose a distributed transmit power control (TPC) algorithm inspired by bird flocking behavior as a means of improving the energy efficiency of a cellular network. Just as each bird in a flock attempts to match its velocity with the average velocity of adjacent birds, in the proposed algorithm, each mobile station (MS) in a cell matches its rate with the average rate of the co-channel MSs in adjacent cells by controlling the transmit power of its serving BS. We verify that this bio-inspired TPC algorithm using a local rate-average process achieves an exponential convergence and maximizes the minimum rate of the MSs concerned. Simulation results show that the proposed TPC algorithm follows the same convergence properties as the flocking algorithm and also effectively reduces the power consumption at the BSs while maintaining a low outage probability as the inter-cell interference increases; in so doing, it significantly improves the energy efficiency of a cellular network. View Full-Text
Keywords: power control algorithm; energy efficiency; green base station; bio-inspired algorithm; flocking model; energy-efficient cellular network power control algorithm; energy efficiency; green base station; bio-inspired algorithm; flocking model; energy-efficient cellular network
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Choi, H.-H.; Lee, J.-R. A Biologically-Inspired Power Control Algorithm for Energy-Efficient Cellular Networks. Energies 2016, 9, 161.

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