A Novel Methodology to Evaluate Uplink Exposure by Personal Devices in Wireless Networks
| Autor: | Christophe Roblin, Alain Sibille, Anis Krayni, Abdelhamid Hadjem, Joe Wiart |
|---|---|
| Přispěvatelé: | Orange Labs [Issy les Moulineaux], France Télécom, Radio-Fréquences Microondes et Ondes Millimétriques (RFM2), Laboratoire Traitement et Communication de l'Information (LTCI), Institut Mines-Télécom [Paris] (IMT)-Télécom Paris-Institut Mines-Télécom [Paris] (IMT)-Télécom Paris, Département Communications & Electronique (COMELEC), Télécom ParisTech |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
030103 biophysics Engineering EMF exposure 02 engineering and technology Inverse Gaussian distribution 03 medical and health sciences symbols.namesake [INFO.INFO-NI]Computer Science [cs]/Networking and Internet Architecture [cs.NI] human-body effect statistical analysis Telecommunications link 0202 electrical engineering electronic engineering information engineering Electronic engineering Wireless Antenna theory Sensitivity (control systems) Electrical and Electronic Engineering Wireless network business.industry 020206 networking & telecommunications Condensed Matter Physics Atomic and Molecular Physics and Optics Power (physics) Radio propagation [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism radio propagation symbols wireless devices business Communication channel |
| Zdroj: | IEEE Transactions on Electromagnetic Compatibility IEEE Transactions on Electromagnetic Compatibility, Institute of Electrical and Electronics Engineers, 2016, 58 (3), pp.896-906. ⟨10.1109/TEMC.2016.2524543⟩ |
| ISSN: | 0018-9375 |
| Popis: | International audience; Over the last 20 years, the wireless technology has known a large development in terms of devices and services, accompanied consequently by considerable doubts about the level of exposure to the electromagnetic fields radiated by these systems. An intermediate step in the assessment of the real exposure is to statistically model the input power delivered to these personal devices during an uplink transmission. In this spirit, we propose a systematic methodology for the characterization of the variability of the delivered input power for given propagation conditions. This methodology first addresses the influence of the personal devices relative positioning, with respect to the user's body on the antennas performance as well as on the exposure level. Second, it add-resses the sensitivity of the input power to the characteristics of the propagation channel. The exposure levels have been investigated from specific absorption rates computed using finite-difference time-domain simulations on a realistic numerical model of child bodies. The input power is directly related to the antenna radiation pattern and to the local propagation scenario, through effects such as body obstruction and multipath diversity. The statistical analysis shows that the delivered input power can be modeled by an inverse Gaussian or a log-normal distribution. |
| Databáze: | OpenAIRE |
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