Coverage, Capacity, and Energy Efficiency Analysis in the Uplink of mmWave Cellular Networks
Coverage, Capacity, and Energy Efficiency Analysis in the Uplink of mmWave Cellular Networks
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DOI：
10.1109/tvt.2017.2775520
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发表时间：
2018-05
影响因子：
6.8
通讯作者：
Oluwakayode Onireti;A. Imran;M. Imran
中科院分区：
文献类型：
--
作者：
Oluwakayode Onireti;A. Imran;M. Imran
在本文中，使用随机几何的概念，我们提出了一个分析框架，以评估信号干扰噪声比（$\text{SINR}$）覆盖的毫米波蜂窝网络的上行链路。通过使用距离相关的视线（LOS）的概率函数，LOS和nonLOS用户的位置被建模为两个独立的非齐次泊松点过程，每个具有不同的路径损耗指数。分析考虑到每用户的分数功率控制（FPC），耦合的用户的传输基于位置相关的信道反转。我们在分析中考虑以下场景：1）使用测量的路径损耗执行的基于路径损耗的FPC（PL-FPC）和2）使用测量的距离执行的基于距离的FPC（D-FPC）。使用开发的框架，我们推导出面积频谱效率和能量效率的表达式。结果表明，在$\text{SINR}$的覆盖范围，D-FPC优于PL-FPC计划在高$\text{SINR}$，未来的网络预计将运行。与PL-FPC方案相比，它实现了相等或更好的面积频谱效率和能量效率。相反，传统的超高频蜂窝网络，在两个FPC计划，$\text{SINR}$的覆盖范围减少的细胞密度变得大于一个阈值，而面积频谱效率经历一个缓慢的增长区域。
In this paper, using the concept of stochastic geometry, we present an analytical framework to evaluate the signal-to-interference-and-noise-ratio ($\text{SINR}$ ) coverage in the uplink of millimeter wave cellular networks. By using a distance-dependent line-of-sight (LOS) probability function, the location of LOS and nonLOS users are modeled as two independent nonhomogeneous Poisson point processes, with each having a different pathloss exponent. The analysis takes account of per-user fractional power control (FPC), which couples the transmission of users based on location-dependent channel inversion. We consider the following scenarios in our analysis: 1) pathloss-based FPC (PL-FPC) which is performed using the measured pathloss and 2) distance-based FPC (D-FPC) which is performed using the measured distance. Using the developed framework, we derive expressions for the area spectral efficiency and energy efficiency. Results suggest that in terms of $\text{SINR}$ coverage, D-FPC outperforms PL-FPC scheme at high $\text{SINR}$ where the future networks are expected to operate. It achieves equal or better area spectral efficiency and energy efficiency compared with the PL-FPC scheme. Contrary to the conventional ultra-high frequency cellular networks, in both FPC schemes, the $\text{SINR}$ coverage decreases as the cell density becomes greater than a threshold, while the area spectral efficiency experiences a slow growth region.