Interference Management Using Beamforming Techniques For Line-Of-Sight Femtocell Networks


Alias, Mohamad Yusoff and Roslee, Mardeni and Mohamed, Khaled S. (2020) Interference Management Using Beamforming Techniques For Line-Of-Sight Femtocell Networks. IEICE Transactions on Communications, E103B (8). pp. 881-887. ISSN 0916-8516

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Femtocell structures can offer better voice and data exchange in cellular networks. However, interference in such networks poses a major challenge in the practical development of cellular communication. To tackle this issue, an advanced interference mitigation scheme for Line-Of-Sight (LOS) femtocell networks in indoor environments is proposed in this paper. Using a femtocell management system (FMS) that controls all femtocells in a service area, the aggressor femtocells are identified and then the transmitted beam patterns are adjusted using the linear array antenna equipped in each femtocell to mitigate the interference contribution to the neighbouring femtocells. Prior to that, the affected users are switched to the femtocells that provide better throughput levels to avoid increasing the outage probability. This paper considers different femtocell deployment indexes to verify and justifies the feasibility of the findings in different density areas. Relative to fixed and adaptive power control schemes, the proposed scheme achieves approximately 5% spectral efficiency (SE) improvement, about 10% outage probability reduction, and about 7% Mbps average user throughput improvement.

Item Type: Article
Uncontrolled Keywords: Beamforming
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101-6720 Telecommunication. Including telegraphy, telephone, radio, radar, television
Divisions: Faculty of Engineering (FOE)
Depositing User: Ms Suzilawati Abu Samah
Date Deposited: 14 Oct 2021 04:04
Last Modified: 14 Oct 2021 04:04


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