论文标题
空间一致的频道对毫米波系统数字波束形成的影响
Impact of Spatially Consistent Channels on Digital Beamforming for Millimeter-Wave Systems
论文作者
论文摘要
大规模多输入多输出（MIMO）的前提是基于相干的传输和检测。大多数关于大规模MIMO的大量文献都对简化的统计传播模型进行了绩效评估。所有此类模型均基于下降，并且不能确保通道参数的连续性。在本文中，我们量化了空间一致（SC）模型对大型MIMO系统的光束形成的影响。我们专注于28GHz多源城市微细胞场景的下行链路。使用最近标准化的第三代伙伴关系项目38.901 SC-I程序，我们评估了用户设备的信噪比与噪声比率和系统的Ergodic Sugs Spectral效率，并使用零框架，块对角度化和信号对透 - 触发性 - 透明度 - 透明率 - 透明率 - 噪声比率。我们的结果揭示了，在实用的信噪比水平下，SC通道相对于没有SC的情况，由于整个通道参数的实质空间相关性而产生明显的性能损失。
The premise of massive multiple-input multiple-output (MIMO) is based around coherent transmission and detection. Majority of the vast literature on massive MIMO presents performance evaluations over simplified statistical propagation models. All such models are drop-based and do not ensure continuity of channel parameters. In this paper, we quantify the impact of spatially consistent (SC) models on beamforming for massive MIMO systems. We focus on the downlink of a 28GHz multiuser urban microcellular scenario. Using the recently standardized Third Generation Partnership Project 38.901 SC-I procedure, we evaluate the signal-to-interference-plus-noise ratio of a user equipment and the system ergodic sum spectral efficiency with zero-forcing, block diagonalization, and signal-to-leakage-plus-noise ratio beamforming. Our results disclose that at practical signal-to-noise ratio levels, SC channels yield a significant performance loss relative to the case without SC due to substantial spatial correlation across the channel parameters.
