论文标题
无线通道容量估计的矩传递方法
The Moment Passing Method for Wireless Channel Capacity Estimation
论文作者
论文摘要
无线网络容量可以视为无线通信系统最重要的性能指标。随着无线通信技术的快速发展，未来的无线系统将变得越来越复杂。结果，通道增益矩阵将成为一个大维随机矩阵，从而导致获得容量的计算成本极高。在本文中，我们提出了一种瞬间传递方法（MPM），以实现对未来超密集无线系统的快速准确估计。它可以确定具有二次复杂性的容量，考虑到单个矩阵操作的成本不小于二次复杂性，这是最佳的。此外，它具有很高的精度。仿真结果表明，该方法的估计误差低于2％。最后，我们的方法是高度通用的，因为它独立于BS和用户的分布以及网络区域的形状。更重要的是，它不仅可以应用于常规的多用户多重输入和多重输出（MU-MIMO）网络，还可以应用于为B5G/6G设计的以容量为中心的网络。
Wireless network capacity can be regarded as the most important performance metric for wireless communication systems. With the fast development of wireless communication technology, future wireless systems will become more and more complicated. As a result, the channel gain matrix will become a large-dimensional random matrix, leading to an extremely high computational cost to obtain the capacity. In this paper, we propose a moment passing method (MPM) to realize the fast and accurate capacity estimation for future ultra-dense wireless systems. It can determine the capacity with quadratic complexity, which is optimal considering that the cost of a single matrix operation is not less than quadratic complexity. Moreover, it has high accuracy. The simulation results show that the estimation error of this method is below 2 percent. Finally, our method is highly general, as it is independent of the distributions of BSs and users, and the shape of network areas. More importantly, it can be applied not only to the conventional multi-user multiple input and multiple output (MU-MIMO) networks, but also to the capacity-centric networks designed for B5G/6G.
