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Femtocells are low power cellular base stations typically deployed indoors in residential and enterprise environments as well as hotspots in order to improve voice and high rate data coverage and provide excellent user experience. The cellular operator benefits from reduced infrastructure deployment costs for capacity upgrades and coverage improvements. While improving performance, femtocells may cause some interference to other users in the network. However, with the use of proper interference management techniques, this interference may be well controlled. This paper focuses on Up-Link (UL) interference management techniques for 3G femtocell deployments.
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