Line-of-Sight MIMO via Reflection From a Smooth Surface

TL;DR

This paper introduces a deterministic channel model for wireless communication via reflections from a smooth, infinite planar surface, enabling line-of-sight MIMO through large reflective surfaces at high frequencies.

Contribution

It presents a physics-based, precise channel model for line-of-sight MIMO through reflections, applicable to mmWave and terahertz frequencies, based on wave propagation principles.

Findings

Line-of-sight spatial multiplexing is possible via reflections from large surfaces.

The model is rigorously derived from wave physics.

Applicable to high-frequency wireless systems.

Abstract

We provide a deterministic channel model for a scenario where wireless connectivity is established through a reflection from a planar smooth surface of an infinite extent. The developed model is rigorously built upon the physics of wave propagation, and is as precise as tight are the unboundedness and smoothness assumptions on the surface. This model allows establishing that line-of-sight spatial multiplexing can take place via reflection off an electrically large surface, a situation of high interest for mmWave and terahertz frequencies.