Liao, S., Sun, J., Chen, Y., Wang, Y. and Zhang, P. (2015) Distributed power control for wireless networks via the alternating direction method of multipliers. Journal of Network and Computer Applications, 55. pp. 81-88. ISSN 1084-8045 (doi:10.1016/j.jnca.2015.05.005)

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PDF (Author's Accepted Manuscript) 13644_SUN_JNCA_(AAM_accepted_12May2015).pdf - Accepted Version Available under License Creative Commons Attribution Non-commercial No Derivatives. Download (708kB)

Abstract

Utility-based power control in wireless networks has been widely recognized as an effective mechanism to managing co-channel interferences. It is based on the maximization of system utility subject to power constraints, which is referred to as power control optimization problem. Global coupling between the mutual interference of wireless channels increases the difficulty of searching global optimum significantly. In this paper, we decouple the optimization problems with concave and non-concave utility functions; and transform them into a global consensus problem by introducing locally slack variables. We then propose two distributed iterative optimization algorithms for the global consensus problems with concave and non-concave objective functions, respectively, based on an alternating direction method of multipliers. Furthermore, we prove that both algorithms converge to the global optimum of the total network utility. Simulation results show the effectiveness of the algorithms. Comparison experiments show that the developed algorithms compare favourably against some other well-known algorithms.

Item Type:	Article
Additional Information:	[1] Acknowledgment (funding): This work was supported in part by the National Natural Science Foundation of China (Grant No. 61072051 and No. 61202470), the key science and technology project of Wuhan (Grant No.2014010202010108) and Doctoral Program of Higher Education of China (Grant No. 20110141120046). [2] This is the Author's Accepted Manuscript version, uploaded in accordance with the publisher's self-archiving policy. Please note: this is a PDF file of an unedited manuscript that has been accepted for publication. The manuscript will undergo copyediting, typesetting, and review of the resulting galley proof before it is published in its final citable form. During the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.
Uncontrolled Keywords:	power control, network utility maximization, alternating direction method, dual decomposition, penalty factor
Subjects:	Q Science > QA Mathematics T Technology > T Technology (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering
Faculty / School / Research Centre / Research Group:	Faculty of Engineering & Science
Related URLs:	Publisher
Last Modified:	14 Oct 2016 09:33
URI:	http://gala.gre.ac.uk/id/eprint/13644

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