Spatial degrees of freedom of MIMO systems in Line-of-Sight Environment

TL;DR

This paper investigates how line-of-sight conditions impact the spatial degrees of freedom in distributed MIMO systems, focusing on a new class of random matrices relevant to wireless networks.

Contribution

It provides a detailed analysis of MIMO performance under line-of-sight conditions, a less-explored area compared to rich scattering environments.

Findings

Characterization of a new class of random matrices for LOS MIMO

Insights into the limitations of spatial degrees of freedom in LOS environments

Implications for the design of distributed MIMO systems in wireless networks

Abstract

While the efficiency of MIMO transmissions in a rich scattering environment has been demonstrated, less is known about the situation where the fading matrix coefficients come from a line-of-sight model. In this paper, we study in detail how this line-of-sight assumption affects the performance of distributed MIMO transmissions between far away clusters of nodes in a wireless network. Our analysis pertains to the study of a new class of random matrices.