J. Wiart et al., Analysis of the influence of the power control and discontinuous transmission on RF exposure with GSM mobile phones, IEEE ELMAGN, 42(4), 2000, pp. 376-385
Citations number
22
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY
Biological studies and, in particular, epidemiological ones require the est
imation of the RF exposure induced by a mobile phone, Due to the different
techniques used by global system mobile (GSM) and digital communication sys
tem (DCS) such as power control and discontinuous transmission, the power e
mitted by a handset is largely variable. As these parameters depend on the
environment and the network strategy. individual exposure level is difficul
t to evaluate a priori. An analysis of the relative influence of the main p
arameters is performed and a method of statistical analysis based on measur
ement is proposed to estimate and characterize the exposure level in an ope
rating network, Using a test mobile system, the data stream between the mob
ile and the base station, and, in particular the power control level, has b
een recorded along routes in Paris and its vicinity. Statistical parameters
such as mean value, standard deviation, level crossing rate, and average d
uration fading have been extracted from these data. These parameters, which
characterize the RF exposure induced by a GSM handset in an operating netw
ork, have been applied to a generic handset to evaluate the characteristics
of the power absorbed by specific biological tissues using the finite-diff
erence time-domain (FDTD) method.