Zahir, Talha, Arshad, Kamran, Ko, Youngwook and Moessner, Klaus (2011) A downlink power control scheme for interference avoidance in femtocells. In: The 7th International Wireless Communications & Mobile Computing Conference. Institute of Electrical and Electronics Engineers, Inc., Piscataway, NJ, USA, pp. 1222-1226. ISBN 9781424495399 ISSN http://dx.doi.org/10.1109/IWCMC.2011.5982714 (Online) (doi:https://doi.org/10.1109/IWCMC.2011.5982714)

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Abstract

Femtocells being small low powered base stations provide sufficient increase in system capacity along with better indoor coverage. However, the dense deployment of femtocells face the main challenge of co channel interference with macrocell users. In this paper, this interference problem is addressed by proposing a novel downlink power control algorithm for femtocells. The proposed algorithm gradually reduces the downlink transmit power of femtocells when they are informed about a nearby macrocell user under interference. This information is given to the femtocells by the macrocell base station through a unidirectional downlink broadcast channel. Simulation results show that the algorithm causes the macrocell to accommodate large number of femtocells within its area, whereas at the same time protecting the macrocell users from any harmful interference.

Item Type:	Conference Proceedings
Title of Proceedings:	The 7th International Wireless Communications & Mobile Computing Conference
Additional Information:	[1] This paper was first presented at the 7th International Wireless Communications & Mobile Computing Conference (IWCMC 2011) held from 4-8 July 2011 in Istanbul, Turkey. [2] ISBN: 9781424495399; 9781457795382
Uncontrolled Keywords:	cochannel interference, femtocellular radio, interference suppression, telecommunication control, downlink power control algorithm, downlink transmit power reduction, femtocells, interference avoidance, macrocell base station, macrocell user, unidirectional downlink broadcast channel, downlink, face, femtocells, interference, macrocell networks, power control, macrocell
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering
Pre-2014 Departments:	School of Engineering School of Engineering > Mobile & Wireless Communications Research Laboratory
Related URLs:	Publisher Organisation
Last Modified:	14 Oct 2016 09:27
URI:	http://gala.gre.ac.uk/id/eprint/11274

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