Statistical Analysis of the Uplink Inter-cell Interference for Cellular Systems
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摘要: 在同频复用网络中,小区间干扰已成为限制系统性能提升的关键因素之一。该文对单个干扰小区产生的上行小区间干扰链路进行统计建模,通过分析路损的矩生成函数和累积量生成函数,得出了干扰链路路损分布函数的近似表达式。进一步地,根据得出的统计模型分析系统参数设置对干扰路损分布的影响。研究发现,阴影衰落的标准差越大,上行干扰路损分布越接近高斯分布。另外,传播模型参数中的衰减指数也对路损分布有较大的影响。Abstract: For frequency reuse one systems, the inter-cell interference is one of the restricting factors of the system performance. This paper presents a statistical modeling of the path loss of uplink inter-cell interference link from single interference cell. Through the derivation and analysis of the Moment Generating Function (MGF) and the Cumulant Generating Function (CGF), the reliable approximated probability density function of the path loss of interfering link is derived. Based on the investigation of the derived results, it is observed that with the increase of the variance of shadow fading, the distribution of the path loss of interfering link tends to be Gaussian distribution. In addition, the attenuation exponent of the path loss model has great influence on the distribution of the path loss.
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