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In UMTS cellular networks, Common Pilot Channel (CPICH) signals are broadcast by base stations for channel estimation and cell selection. The strength of CPICH signal determines cell coverage and pilot pollution to neighboring cells; pilot power allocation thus involves a tradeoff between coverage and interference. In this paper, we study the issue of pilot power management in closed-access High-Speed...
Maintenance plays an important role in keeping the availability of civilian and military equipments at a satisfactory level. The issue, which decision maker is most concerned about, is how to keep the availability at a satisfactory level with less maintenance cost. In this study, we propose a simulation-optimization approach to spare parts allocation based on decision-maker's satisfaction. Firstly,...
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