论文标题
多面积细胞网络中的面积光谱效率和SINR缩放定律
Area Spectral Efficiency and SINR Scaling Laws in Multi-Antenna Cellular Networks
论文作者
论文摘要
我们研究了多个Antenna细胞网络中信噪比加噪声比（SINR）和面积光谱效率（ASE）的缩放定律，其中天线的数量与基站（BS）空间密度$λ$相比。我们从具有$ n_t（λ）$传输天线的味o案开始，并且单个接收天线，并证明平均sinr缩放为$ \ frac {n_t（λ）}λ$，平均ASE缩放为$λ\ log \ log \ log \ left（1+ \ frac \ frac \ frac {n_t（n_t（λ）}λ\ right）。对于带有单个eigenbeamforming和$ n_r（λ）\ leq n_t（λ）$接收天线的MIMO情况，我们证明条件SINR和ASE的缩放定律与MISO案例完全相同，即不依赖于$ N_R（λ）$。我们还表明，在$ k \ leq n_t（λ）$相邻BSS中的协调束成型并不能改善缩放定律，而不管$ k $什么。从系统设计的角度来看，我们的结果表明，部署多端BSS可以帮助维持每用户吞吐量和ASE的线性增加，而用户设备上的天线数量和BS合作的使用并不重要。
We study the scaling laws of the signal-to-interference-plus-noise ratio (SINR) and area spectral efficiency (ASE) in multi-antenna cellular networks, where the number of antennas scales with the base station (BS) spatial density $λ$. We start with the MISO case having $N_t(λ)$ transmit antennas and a single receive antenna and prove that the average SINR scales as $\frac{N_t(λ)}λ$ and the average ASE scales as $λ\log\left(1+\frac{N_t(λ)}λ\right)$. For the MIMO case with single-stream eigenbeamforming and $N_r(λ) \leq N_t(λ)$ receive antennas, we prove that the scaling laws of the conditional SINR and ASE are exactly the same as the MISO case, i.e. not dependent on $N_r(λ)$. We also show that coordinated beamforming amongst $K\leq N_t(λ)$ neighboring BSs does not improve the scaling laws regardless of $K$. From a system design perspective, our results suggest that deploying multi-antenna BSs can help maintain the per-user throughput and the linear increase in the ASE with BS density, while the number of antennas at the user equipment and the use of BS cooperation do not matter much.
