# Spatial Modulation Based on Reconfigurable Antennas: Performance Evaluation by Using the Prototype of a Reconfigurable Antenna

## TL;DR

This paper evaluates the performance of spatial modulation using a newly designed reconfigurable antenna prototype, providing an analytical framework and practical validation for optimized system design.

## Contribution

It introduces an accurate analytical error probability model and presents a reconfigurable antenna prototype tailored for spatial modulation applications.

## Key findings

- The analytical framework accurately predicts error probability.
- The reconfigurable antenna prototype successfully encodes information via radiation patterns.
- Performance optimization depends on radiation pattern selection.

## Abstract

In this paper, we study the performance of spatial modulation based on reconfigurable antennas. Two main contributions are provided. We introduce an analytical framework to compute the error probability, which is shown to be accurate and useful for system optimization. We design and implement the prototype of a reconfigurable antenna that is specifically designed for application to spatial modulation, and that provides multiple radiation patterns that are used to encode the information bits. By using the measured antenna radiation patterns, we show that spatial modulation based on reconfigurable antennas work in practice, and that its performance can be optimized by appropriately optimizing the radiation patterns to use for a given data rate.