Performance analysis of WDM in LoS communications with arbitrary orientation and position

TL;DR

This paper analyzes the performance of WDM in line-of-sight electromagnetic communications with arbitrary orientations and positions, demonstrating its robustness beyond ideal aligned configurations through numerical evaluation.

Contribution

It adapts the electromagnetic MIMO model for arbitrary segment orientations and positions, providing insights into WDM performance in more general scenarios.

Findings

WDM performs well even with non-aligned segments.

Geometric parameters significantly influence WDM performance.

Numerical results validate the robustness of WDM in diverse configurations.

Abstract

This letter considers the wavenumber-division-multiplexing (WDM) scheme that was recently proposed in [1] for line-of-sight communications between parallel (side-by-side) spatially-continuous electromagnetic segments. Our aim is to analyze the performance of WDM, combined with different digital processing architectures, when the electromagnetic segments have an arbitrary orientation and position. To this end, we first show how the general electromagnetic MIMO (multiple-input multiple-output) model from [1] can be particularized to the case of interest and then use numerical results to evaluate the impact of geometric parameters (e.g., horizontal and vertical distances, azimuth and elevation orientations). It turns out that WDM performs satisfactorily also when the transmit and receive segments are not in boresight direction of each other.