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13 postsFilters: tag: base-stations Clear
Massive assessment of exposure to 5G electromagnetic fields in France: a 5-year synthesis
This paper reports results from a large-scale, multi-phase measurement campaign in mainland France assessing changes in RF exposure associated with 5G deployment from 2020 to 2024. Using more than 24,000 on-ground measurements in direct view of 5G antennas, it finds small average increases in broadband exposure and increased contributions from 5G-related bands over time. The 3.5 GHz band contribution increased but remained a secondary contributor compared with legacy 800/900 MHz bands, and exposure during active downloading was higher than in idle mode.
Definition and Validation of an Exposure Measurement Method for a Typical Load of a Base Station
This exposure-assessment study proposes and validates a method to measure instantaneous RF exposure under typical base station load by generating defined data rates (low/medium/high) using iPerf and measuring channel power across services. Validation at four base stations suggests the approach is reliable across different times of day and loads, with reproducible results when averaging over 30 sweeps. Comparisons indicate iPerf-provoked constant data rates generally match exposure during real application usage, with few deviations beyond stated uncertainty.
Associations between Individual and Geospatial Characteristics and Power of 4G Signals Received by Mobile Phones
This exposure assessment study analyzed smartphone-logged 4G LTE RSSI and GPS data from adults in France to identify determinants of downlink signal strength. RSSI varied with geospatial factors (distance to antennas, antenna density, urbanicity) and time of day, and was also influenced by technical smartphone parameters. The study reports an estimated electric field strength derived from RSSI, but notes high uncertainty in this conversion.
Effect of electromagnetic radiations from mobile towers on genetic damage and genetic polymorphism in humans: a review on India's perspective
This narrative review examines research on radiofrequency electromagnetic radiation (RF-EMR) from mobile towers and its potential association with genetic damage and genetic polymorphism in humans, with an emphasis on India. The abstract states that RF-EMR exposure may affect genetic material and suggests a link between EMR exposure and genetic damage, with possible implications for cancer risk and cell death. It also highlights that genetic polymorphisms may modify susceptibility and calls for further research to clarify health impacts.
5G RF EMF Spectral Exposure Assessment in Four European Countries
This exposure assessment used 146 indoor and outdoor spot measurements in 2023 across Belgium, Switzerland, Hungary, and Poland to characterize 5G (3.6 GHz) and cumulative RF EMF incident power density in public spaces and educational institutions. Reported maximum 5G-specific incident power density was 10.4 mW/m2 (3.2% of the frequency-specific ICNIRP guideline), and all measured levels were stated to be well within ICNIRP limits. Rural areas showed significantly lower incident power density than urban areas, and LOS conditions had higher average incident power density than NLOS. The authors recommend continued reassessment as 5G coverage expands.
Comparison Between Broadband and Personal Exposimeter Measurements for EMF Exposure Map Development Using Evolutionary Programming
This exposure-assessment study compares RF-EMF exposure maps produced using a broadband meter versus a personal exposimeter and aims to correct personal exposimeter readings to match broadband-based maps. The authors report that LOS/NLOS-specific correction factors reduce discrepancies, particularly improving LOS measurements affected by body shielding. A genetic algorithm is used to optimize correction factors and support scalable urban exposure mapping, with the authors noting that additional validation in other environments is needed.
Machine Learning Approach for Ground-Level Estimation of Electromagnetic Radiation in the Near Field of 5G Base Stations
This paper presents a machine-learning method to estimate ground-level electromagnetic radiation (electric field strength) in the near field of 5G base stations, using multiple technical and environmental input parameters. The authors report experimental performance with a mean absolute percentage error of about 5.89% and suggest the approach can reduce costs compared with on-site measurements. The work is positioned as supporting exposure management and base-station placement, while noting the need for careful EMF management due to potential health-risk links.
Standards: Exposure Limits for Brief High Intensity Pulses of Radiofrequency Energy Between 6 and 300 GHz
This standards-focused paper evaluates ICNIRP and IEEE (C95.1-2019) exposure limits for brief, high-intensity pulsed RF-EMF between 6 and 300 GHz, particularly when exposures vary within the 6-minute averaging window. Using numerical and analytical modeling with a one-dimensional thermal tissue model, it reports differences in protection against transient skin heating, with IEEE described as more conservative than ICNIRP. The authors propose an adjustment to pulse fluence limits to improve consistency of protection and note that nonthermal and thermoacoustic effects were not analyzed.
Evaluation of Personal Radiation Exposure from Wireless Signals in Indoor and Outdoor Environments
This exposure assessment measured personal RF electric field strength in multiple indoor and outdoor micro-environments in Malaysia using an ExpoM-RF 4 meter and modeled exposure with machine learning (FCNN, XG Boost) and linear regression. Reported exposures were usually below the stated public limit (61.4 V/m), but maximum values in dense urban areas with many base stations were reported to approach 56.7365 V/m. The authors frame near-threshold maxima in high-density areas as a potential health risk and recommend caution and monitoring.
Deduction of Extrapolation Factors in Realistic Scenarios for In-Situ Assessment of 5G Base Stations
This conference paper examines extrapolation factors used for in-situ EMF exposure assessment of 5G base stations in realistic indoor and outdoor scenarios. Using both frequency-selective and code-selective measurement approaches under varying traffic conditions, it reports substantial variability in extrapolated exposure estimates driven largely by antenna radiation patterns. Outdoor environments showed more stable extrapolation than indoor environments, highlighting challenges for reliable exposure assessment when antenna patterns and network configurations are not well characterized.
Chicken or egg? Attribution hypothesis and nocebo hypothesis to explain somatization associated to perceived RF-EMF exposure
This longitudinal cohort study examined the temporal relationship between somatization and perceived RF-EMF exposure, comparing the attribution hypothesis with the nocebo hypothesis. Using AMIGO questionnaire data from 2011 and 2015, regression analyses suggested the attribution hypothesis more often explained symptom reporting linked to perceived base station RF-EMF exposure and perceived electricity exposure than the nocebo hypothesis. The authors state this contrasts with prior literature and note that a nocebo effect is not fully excluded.
Microwave frequency electromagnetic fields (EMFs) produce widespread neuropsychiatric effects including depression
This 2016 narrative review proposes that non-thermal microwave/lower-frequency EMFs act primarily through activation of voltage-gated calcium channels (VGCCs), with calcium channel blockers reported to block EMF effects. It summarizes animal, occupational, and epidemiological literature and reports that exposures from base stations, heavy mobile phone use, and wireless smart meters are associated with neuropsychiatric symptoms, sometimes with doseresponse patterns. The author concludes that multiple lines of evidence collectively support that non-thermal microwave EMF exposures can produce diverse neuropsychiatric effects including depression.
Physics and biology of mobile telephony
This review argues that current mobile-telephony safety guidelines address excessive microwave heating but may not account for potential non-thermal influences of low-intensity, pulsed radiation. It highlights an asserted oscillatory similarity between pulsed microwave signals and certain electrochemical activities in humans as a reason for concern. While acknowledging uncertainty about health consequences, it notes reported consistencies between some non-thermal effects and neurological problems described by some users and people with long-term base-station exposure.