论文标题
NS-3和5G-LENA扩展以支持双极化MIMO
ns-3 and 5G-LENA Extensions to Support Dual-Polarized MIMO
论文作者
论文摘要
MIMO空间多路复用是提高当前和将来的蜂窝系统中通信数据速率的重要特征。当前，NS-3 LTE模块利用两个流的空间多路复用为2x2 MIMO的抽象模型。尽管MMWave和NR模块缺乏空间多路复用选项，因为NS-3模型不支持多个天线用于空间多路复用，并且像LTE模块中使用的模型不适合MMWave频率。在本文中，我们提出，实施和评估NS-3和NR模块的模型，以实现双极化MIMO（DP-MIMO）。 NS-3的提议扩展为DP-MIMO的多个天线提供了两个流的空间多路复用，并且可以由与NS-3天线阵列模型（例如NR和MMWAVE模块）兼容的任何NS-3模块都可以使用。我们通过利用双极化的天线及其在视线线条条件下的正交性来利用此NS-3扩展为模型DP-MIMO，以发送两个数据流。所提出的模型不依赖于抽象，作为NS-3 LTE模块中的MIMO模型，因此可以更真实地对两个流的传播差异进行建模，相关性，流式间干扰，并允许对等级适应算法进行设计和评估。此外，我们提出和评估自适应等级自适应方案，并将其与固定方案进行比较。开发的NS-3模拟器和NR模块的开发的DP-MIMO空间多路复用模型公开可用。
MIMO spatial multiplexing is an essential feature to increase the communication data rates in current and future cellular systems. Currently, the ns-3 lte module leverages an abstraction model for 2x2 MIMO with spatial multiplexing of two streams; while mmwave and nr modules were lacking the spatial multiplexing option until this work, since the ns-3 models were not supporting the usage of multiple antennas for spatial multiplexing and an abstraction model such as the one used in the lte module is not suitable for the mmWave frequencies. In this paper, we propose, implement and evaluate models for ns-3 and the nr module to enable Dual-Polarized MIMO (DP-MIMO). The proposed extension for the ns-3 supports multiple antennas for DP-MIMO with spatial multiplexing of two streams and can be used by any ns-3 module that is compatible with the ns-3 antenna array-based models, such as nr and mmwave modules. We leverage this ns-3 extension to model DP-MIMO by exploiting dual-polarized antennas and their orthogonality under line-of-sight conditions, as it happens at high-frequency bands, to send the two data streams. The proposed model does not rely on abstraction, as the MIMO model in the ns-3 lte module, and can thus model more realistically the propagation differences of the two streams, correlation, inter-stream interference, and allows design and evaluation of the rank adaptation algorithms. Additionally, we propose and evaluate an adaptive rank adaptation scheme and compare it with a fixed scheme. The developed DP-MIMO spatial multiplexing models for the ns-3 simulator and the nr module are openly available.
