论文标题
频率选择MMWave的高分辨率通道估计大量MIMO系统
High-Resolution Channel Estimation for Frequency-Selective mmWave Massive MIMO System
论文作者
论文摘要
在本文中，我们通过旋转不变性技术（ESPRIT）方法开发了两个高分辨率通道估计方案，用于频率选择性毫米波（MMWAVE）大量MIMO系统。第一个方案是基于二维ESPRIT（TDE），其中包括三个阶段的飞行员传输阶段。该方案首先估计到达的角度（AOA）和出发角度（AOD），然后对AOA和AOD配对。另一个方案将飞行员的传播从三个阶段减少到两个阶段，因此将飞行员在头顶上减少。它基于一维ESPRIT和最低搜索（EMS）。它首先估算每个通道路径的AOD，然后从已确定的主闸中搜索最小值。为了确保强大的通道估计性能，我们还开发了混合的预编码和组合矩阵设计方法，以使接收的信号功率对任何AOA和AOD都保持几乎相同。最后，我们证明，提出的两个方案在计算复杂性和性能方面优于现有信道估计方案。
In this paper, we develop two high-resolution channel estimation schemes based on the estimating signal parameters via the rotational invariance techniques (ESPRIT) method for frequency-selective millimeter wave (mmWave) massive MIMO systems. The first scheme is based on two-dimensional ESPRIT (TDE), which includes three stages of pilot transmission. This scheme first estimates the angles of arrival (AoA) and angles of departure (AoD) and then pairs the AoA and AoD. The other scheme reduces the pilot transmission from three stages to two stages and therefore reduces the pilot overhead. It is based on one-dimensional ESPRIT and minimum searching (EMS). It first estimates the AoD of each channel path and then searches the minimum from the identified mainlobe. To guarantee the robust channel estimation performance, we also develop a hybrid precoding and combining matrices design method so that the received signal power keeps almost the same for any AoA and AoD. Finally, we demonstrate that the proposed two schemes outperform the existing channel estimation schemes in terms of computational complexity and performance.
