Wide-Aperture MIMO via Reflection off a Smooth Surface

TL;DR

This paper develops a precise deterministic channel model for wireless communication via reflection off a smooth, infinite surface, crucial for high-frequency mmWave and terahertz systems, based on wave physics.

Contribution

It introduces a rigorous, physics-based model for MIMO channels involving reflections from large smooth surfaces, advancing understanding of such propagation scenarios.

Findings

Provides a deterministic wave-based channel model

Shows how reflections alter MIMO communication at high frequencies

Applicable to mmWave and terahertz frequency bands

Abstract

This paper provides a deterministic channel model for a scenario where wireless connectivity is established through a reflection off a smooth planar 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 how line-of-sight multiantenna communication is altered by a reflection off an electrically large surface, a situation of high interest for mmWave and terahertz frequencies.