标题： 多天线泊松分布网络中的面积频谱效率分析与能量消耗最小化 显示英文标题

标题： Area Spectral Efficiency Analysis and Energy Consumption Minimization in Multi-Antenna Poisson Distributed Networks

摘要： 本文旨在回答两个基本问题：面积频谱效率（ASE）如何随不同的系统参数变化；如何设计一个节能的网络。 基于随机几何理论，我们获得了考虑多用户MIMO（MU-MIMO）传输的泊松分布网络ASE的表达式及其紧致下界。 借助这个下界，观察到了一些有趣的结果。 这些结果通过原始表达式的数值结果得到了验证。 我们发现，ASE可以被视为天线数量和活跃用户数量的凹函数。 为了最大化ASE，我们证明了活跃用户的最优数量是天线数量的一个固定比例。 在最优活跃用户数量的情况下，我们观察到ASE随着天线数量线性增加。 本文的另一项工作是联合优化基站（BS）密度、天线数量和活跃用户数量以最小化网络能耗。 研究发现，天线数量和活跃用户数量的最优组合是最大化能效的解决方案。 除了最优算法外，我们还提出了一种次优算法来降低计算复杂度，该算法可以实现接近最优性能。 显示英文摘要

摘要： This paper aims at answering two fundamental questions: how area spectral efficiency (ASE) behaves with different system parameters; how to design an energy-efficient network. Based on stochastic geometry, we obtain the expression and a tight lower-bound for ASE of Poisson distributed networks considering multi-user MIMO (MU-MIMO) transmission. With the help of the lower-bound, some interesting results are observed. These results are validated via numerical results for the original expression. We find that ASE can be viewed as a concave function with respect to the number of antennas and active users. For the purpose of maximizing ASE, we demonstrate that the optimal number of active users is a fixed portion of the number of antennas. With optimal number of active users, we observe that ASE increases linearly with the number of antennas. Another work of this paper is joint optimization of the base station (BS) density, the number of antennas and active users to minimize the network energy consumption. It is discovered that the optimal combination of the number of antennas and active users is the solution that maximizes the energy-efficiency. Besides the optimal algorithm, we propose a suboptimal algorithm to reduce the computational complexity, which can achieve near optimal performance.