Power Allocation Scheme for Femto-to-Macro Downlink Interference Reduction for Smart Devices in Ambient Intelligence

In this paper, we present an analysis on the characteristics of cross-tier interference in regard to femtocells deployed in LTE cellular networks. We also present a cross-tier SLNR-based water filling (CSWF) power allocation algorithm for the reduction of interference from femtocell to macrocell for...

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Bibliographic Details
Published in:Mobile information systems 2016-01, Vol.2016 (2016), p.1-10
Main Authors: Choi, Chang, Choi, Dongmin, Liang, Chengchao, Su, Xin
Format: Article
Language:English
Subjects:
Algorithms
Ambient intelligence
Cellular communication
Interference
Mobile communication systems
Reduction
Wireless communications
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Summary:In this paper, we present an analysis on the characteristics of cross-tier interference in regard to femtocells deployed in LTE cellular networks. We also present a cross-tier SLNR-based water filling (CSWF) power allocation algorithm for the reduction of interference from femtocell to macrocell for smart devices used in ambient intelligence. The results of this study show that CSWF significantly improves the macro UE performance around a femtocell access point (AP) from the SINR and throughput perspective. The CSWF algorithm also provides a relative gain on the throughput of femtocell UEs compared to frequency partitioning. Furthermore, the proposed algorithm has a low complexity and is implemented on the femto-AP side only, therefore not affecting the macro system.
ISSN:1574-017X
1875-905X
DOI:10.1155/2016/7172515