自组织飞基站室内部署干扰分析

H. M. de Lima Carlos, M. Bennis, K. Ghaboosi, M. Latva-aho
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引用次数: 10

摘要

自组织飞基站的计划外部署和自主运行所产生的同信道干扰是这种架构可行性的最大挑战。在此,我们提供了一个评估室内部署场景下上行干扰的分析框架。该模型采用高斯-埃尔米特正交法来逼近标记接收器感知到的总干扰,并采用随机几何来模拟节点的分布及其相对分离距离。此外,还评估了协调附近飞基站以避免干扰的效益。分析结果与仿真结果吻合较好。然而,通过协调,可以改善空间重用,减少中断,不仅可以实现更高的频谱效率,还可以增加容量。
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On interference analysis of self-organized femtocells in indoor deployment
The co-channel interference arising from the unplanned deployment and autonomous operation of self-organized femtocells is the most challenging obstacle to the viability of such architecture. Herein, we provide an analytical framework for assessing the uplink interference of indoor deployment scenario. The proposed model resorts to Gauss-Hermite quadrature to obtain an approximation to the total interference perceived by a tagged receiver, and stochastic geometry to model the distribution of nodes and their relative separation distances. Furthermore, the benefit of coordinating nearby femtocells so as to perform interference avoidance is also assessed. We observe that analytical results match well with simulation results. And yet, through coordination, it is possible to improve spatial reuse, reduce outage, and attain not only higher spectral efficiency, but also increased capacity.
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