title: Downlink power distributions for 2G and 3G mobile communication networks.
abstract: Knowledge of realistic power levels is key when conducting accurate EMF exposure assessments. In this study, downlink output power distributions for radio base stations in 2G and 3G mobile communication networks have been assessed. The distributions were obtained from network measurement data collected from the Operations Support System, which normally is used for network monitoring and management. Significant amounts of data were gathered simultaneously for large sets of radio base stations covering wide geographical areas and different environments. The method was validated with in situ measurements. For the 3G network, the 90th percentile of the averaged output power during high traffic hours was found to be 43 % of the maximum available power. The corresponding number for 2G, with two or more transceivers installed, was 65 % or below.
authors.affiliation: Ericsson Research, SE-164 80 Stockholm, Sweden.
authors.forename: Davide
authors.initials: D
authors.lastname: Colombi
authors.forename: Björn
authors.initials: B
authors.lastname: Thors
authors.forename: Tomas
authors.initials: T
authors.lastname: Persson
authors.forename: Niklas
authors.initials: N
authors.lastname: Wirén
authors.forename: Lars-Eric
authors.initials: LE
authors.lastname: Larsson
authors.forename: Mikael
authors.initials: M
authors.lastname: Jonsson
authors.forename: Christer
authors.initials: C
authors.lastname: Törnevik
mesh_terms: D040421:Cell Phone; D004574:Electromagnetic Fields; D004781:Environmental Exposure / Q000706:statistics & numerical data; D004784:Environmental Monitoring; D005843:Geography; D006801:Humans; D011846:Radio Waves; D013548:Sweden; D059015:Wireless Technology