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In this paper, we propose a vehicle-to-infrastructure (V2I) communication system that utilizes a smart antenna technology to increase service coverage and system capacity. In the proposed V2I communication system, the infrastructure forms multiple directional beams to detect, in the shortest possible time, vehicles that have newly arrived within the area of its service coverage. We also propose a...
Since a large number of femtocells may coexist in one macrocell area, interference management becomes a major issue in the deployment of femtocells, and therefore has been researched actively. In the IEEE 802.16m, one way to mitigate interference is Low Duty Operation (LDO) Mode for femtocells. Femtocell in the LDO mode changes alternately between available interval and unavailable interval. During...
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