Stochastic geometry analysis of normalized SNR-based scheduling in downlink cellular networks
Stochastic geometry analysis of normalized SNR-based scheduling in downlink cellular networks
复制标题
下行蜂窝网络中基于归一化信噪比的调度的随机几何分析
DOI：
10.1109/lwc.2017.2701381
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
and M. Morikura
中科院分区：
文献类型：
--
作者：
T. Ohto;K. Yamamoto;S.-L. Kim;T. Nishio;and M. Morikura
通过将基站和用户的位置建模为两个独立的Poison点过程，推导了下行蜂窝网络中基于归一化信噪比调度的覆盖概率和平均数据速率。调度器选择具有由短期平均SNR归一化的最大瞬时SNR的用户。在归一化SNR调度中，当期望信号经历瑞利衰落时的覆盖概率由干扰的概率密度函数的一系列拉普拉斯变换给出。此外，封闭形式的表达的覆盖概率近似实现。结果表明，归一化SNR调度由于多用户分集增益而增加了覆盖概率。
The coverage probability and average data rate of normalized SNR-based scheduling in a downlink cellular network are derived by modeling the locations of the base stations and users as two independent Poison point processes. The scheduler selects the user with the largest instantaneous SNR normalized by the short-term average SNR. In normalized SNR scheduling, the coverage probability when the desired signal experiences Rayleigh fading is shown to be given by a series of Laplace transforms of the probability density function of interference. Also, a closed-form expression for the coverage probability is approximately achieved. The results confirm that normalized SNR scheduling increases the coverage probability due to the multi-user diversity gain.