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Comprehensive Measurement-Based Assessment of Downlink RF-EMF Exposure in Urban Environments: Multi-Method Analysis

Shanshan Wang1, Yarui Zhang1,2, Yukun Liu1

  • 1Chaire C2M, LTCI, Telecom Paris, Institut Polytechnique de Paris, Palaiseau, France.

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Summary
This summary is machine-generated.

This study assessed radio-frequency electromagnetic field (RF-EMF) exposure in a French city using drive tests, spot measurements, and sensors. Results show good agreement across methods, with exposure inversely related to base station proximity.

Keywords:
EMF exposuredrive testkrigingmoving averagesensor networksspot measurements

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Area of Science:

  • Environmental Science
  • Electromagnetics
  • Public Health

Background:

  • Radio-frequency electromagnetic field (RF-EMF) exposure is a growing concern with increasing wireless technology deployment.
  • Accurate measurement and assessment of RF-EMF levels are crucial for public health and regulatory compliance.

Purpose of the Study:

  • To conduct a comprehensive measurement-based assessment of RF-EMF exposure levels in a French urban environment.
  • To compare the reliability and effectiveness of different RF-EMF measurement techniques.
  • To investigate the impact of 5G beamforming and base station proximity on exposure levels.

Main Methods:

  • Utilized three measurement approaches: drive tests (DT), spot measurements, and sensor networks.
  • Employed a portable spectrum analyzer for DT and both broadband and frequency-selective systems for spot measurements.
  • Installed 19 streetlamp-mounted sensors for continuous broadband E-field monitoring and applied statistical analysis, including a distance-based moving average and kriging interpolation.

Main Results:

  • Demonstrated good agreement in RF-EMF exposure levels across the three measurement methods.
  • Smoothed DT data correlated well with spot measurements and base station antenna (BSA) density.
  • 5G measurements indicated beamforming impacts, and sensor data revealed an inverse relationship between E-field levels and proximity to the nearest BSA.

Conclusions:

  • The study confirms the reliability of diverse systems for assessing RF-EMF exposure.
  • Highlights the advantages and limitations of each measurement technique through intercomparison.
  • Provides valuable data on urban RF-EMF exposure, informing public health and regulatory discussions.