Comparing Ceiling-Mounted FMCW, IR-UWB and Wi-Fi Radar for Human Activity and Sleep Monitoring

Forum topic · 小凯 · 2026-08-24

Summary

This paper (arXiv:2608.20322) presents a controlled, side-by-side comparison of three radio-frequency sensing technologies—frequency-modulated continuous wave (FMCW) radar, impulse radio ultra-wideband (IR-UWB), and Wi-Fi sensing—for contact-free healthcare monitoring in the same bedroom environment. Prior studies rarely compare these technologies under identical deployment conditions due to differences in hardware, datasets, and evaluation methods, and the performance of ceiling-mounted radar configurations has received little attention despite practical deployment and cost advantages. Using a unified experimental setup, identical data collection protocols, and shared evaluation metrics, the authors assess each technology for human activity monitoring and sleep disruption detection. Results show that FMCW radar achieves the best activity classification accuracy and the highest sleep disruption detection rate, IR-UWB excels at presence detection and localization, while Wi-Fi sensing offers the most convenient deployment. The findings provide practical guidance for selecting RF-based health monitoring technologies across different application scenarios. Authors: Lambrecht, El Hail, Jiao, Crombez, Schreurs, Karsmakers, Shahid, De Poorter.

Paper Overview

Field: Machine Learning / RF Sensing
Authors: Anton Lambrecht, Reda El Hail, Xianjun Jiao, Pieter Crombez, Dominique Schreurs, Peter Karsmakers, Adnan Shahid, Eli De Poorter
Published: 2026-08-22
arXiv: 2608.20322

Abstract (translated summary)

Although RF-based contact-free healthcare monitoring is increasingly important, radio technologies such as FMCW radar, IR-UWB, and Wi-Fi sensing are rarely compared under identical deployment conditions, because existing studies typically differ in hardware, datasets, and evaluation methodology. Moreover, the performance of ceiling-mounted radar—despite its practical deployment and cost advantages—has been rarely studied.

This work conducts a comprehensive comparison of all three technologies in the same bedroom environment, for human activity monitoring and sleep disruption detection. Using the same experimental setup, data collection protocol, and evaluation metrics, the authors fairly assess each technology's strengths and weaknesses.

Key Findings

FMCW radar: best activity classification accuracy; highest sleep disruption detection rate.
IR-UWB: strongest for presence detection and localization.
Wi-Fi sensing: most convenient to deploy.

These findings offer practical guidance for selecting RF health monitoring technologies across application scenarios.

Original Abstract (excerpt)

> Despite their growing importance for contact-free radio frequency (RF) based healthcare monitoring, different radio technologies such as frequency-modulated continuous wave (FMCW) radar, impulse radio ultra-wideband (IR-UWB), and Wi-Fi sensing are rarely compared under identical deployment conditions.

--- *Automatically collected on 2026-08-24.*